docs: optimize link checker

This brings the ADK Python quickstart sample up to par with the other
orchestrations in the guidance, removing the need for special test
handling.

.ci/quickstart_test/run_go_tests.sh

@@ -1,125 +0,0 @@
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-#!/bin/bash
-
-set -e
-
-TABLE_NAME="hotels_go"
-QUICKSTART_GO_DIR="docs/en/getting-started/quickstart/go"
-SQL_FILE=".ci/quickstart_test/setup_hotels_sample.sql"
-
-PROXY_PID=""
-TOOLBOX_PID=""
-
-install_system_packages() {
-  apt-get update && apt-get install -y \
-    postgresql-client \
-    wget \
-    gettext-base  \
-    netcat-openbsd
-}
-
-start_cloud_sql_proxy() {
-  wget "https://storage.googleapis.com/cloud-sql-connectors/cloud-sql-proxy/v2.10.0/cloud-sql-proxy.linux.amd64" -O /usr/local/bin/cloud-sql-proxy
-  chmod +x /usr/local/bin/cloud-sql-proxy
-  cloud-sql-proxy "${CLOUD_SQL_INSTANCE}" &
-  PROXY_PID=$!
-
-  for i in {1..30}; do
-    if nc -z 127.0.0.1 5432; then
-      echo "Cloud SQL Proxy is up and running."
-      return
-    fi
-    sleep 1
-  done
-
-  echo "Cloud SQL Proxy failed to start within the timeout period."
-  exit 1
-}
-
-setup_toolbox() {
-  TOOLBOX_YAML="/tools.yaml"
-  echo "${TOOLS_YAML_CONTENT}" > "$TOOLBOX_YAML"
-  if [ ! -f "$TOOLBOX_YAML" ]; then echo "Failed to create tools.yaml"; exit 1; fi
-  wget "https://storage.googleapis.com/genai-toolbox/v${VERSION}/linux/amd64/toolbox" -O "/toolbox"
-  chmod +x "/toolbox"
-  /toolbox --tools-file "$TOOLBOX_YAML" &
-  TOOLBOX_PID=$!
-  sleep 2
-}
-
-setup_orch_table() {
-  export TABLE_NAME
-  envsubst < "$SQL_FILE" | psql -h "$PGHOST" -p "$PGPORT" -U "$DB_USER" -d "$DATABASE_NAME"
-}
-
-run_orch_test() {
-  local orch_dir="$1"
-  local orch_name
-  orch_name=$(basename "$orch_dir")
-
-  if [ "$orch_name" == "openAI" ]; then
-      echo -e "\nSkipping framework '${orch_name}': Temporarily excluded."
-      return
-  fi
-
-  (
-    set -e
-    setup_orch_table
-
-    echo "--- Preparing module for $orch_name ---"
-    cd "$orch_dir"
-
-    if [ -f "go.mod" ]; then
-      go mod tidy
-    fi
-
-    cd ..
-
-    export ORCH_NAME="$orch_name"
-
-    echo "--- Running tests for $orch_name ---"
-    go test -v ./...
-  )
-}
-
-cleanup_all() {
-  echo "--- Final cleanup: Shutting down processes and dropping table ---"
-  if [ -n "$TOOLBOX_PID" ]; then
-    kill $TOOLBOX_PID || true
-  fi
-  if [ -n "$PROXY_PID" ]; then
-    kill $PROXY_PID || true
-  fi
-}
-trap cleanup_all EXIT
-
-# Main script execution
-install_system_packages
-start_cloud_sql_proxy
-
-export PGHOST=127.0.0.1
-export PGPORT=5432
-export PGPASSWORD="$DB_PASSWORD"
-export GOOGLE_API_KEY="$GOOGLE_API_KEY"
-
-setup_toolbox
-
-for ORCH_DIR in "$QUICKSTART_GO_DIR"/*/; do
-  if [ ! -d "$ORCH_DIR" ]; then
-    continue
-  fi
-  run_orch_test "$ORCH_DIR"
-done

.ci/quickstart_test/run_js_tests.sh

@@ -1,125 +0,0 @@
-# Copyright 2025 Google LLC
-# 
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-# 
-#      http://www.apache.org/licenses/LICENSE-2.0
-# 
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-#!/bin/bash
-
-set -e
-
-TABLE_NAME="hotels_js"
-QUICKSTART_JS_DIR="docs/en/getting-started/quickstart/js"
-SQL_FILE=".ci/quickstart_test/setup_hotels_sample.sql"
-
-# Initialize process IDs to empty at the top of the script
-PROXY_PID=""
-TOOLBOX_PID=""
-
-install_system_packages() {
-  apt-get update && apt-get install -y \
-    postgresql-client \
-    wget \
-    gettext-base  \
-    netcat-openbsd
-}
-
-start_cloud_sql_proxy() {
-  wget "https://storage.googleapis.com/cloud-sql-connectors/cloud-sql-proxy/v2.10.0/cloud-sql-proxy.linux.amd64" -O /usr/local/bin/cloud-sql-proxy
-  chmod +x /usr/local/bin/cloud-sql-proxy
-  cloud-sql-proxy "${CLOUD_SQL_INSTANCE}" &
-  PROXY_PID=$!
-
-  for i in {1..30}; do
-    if nc -z 127.0.0.1 5432; then
-      echo "Cloud SQL Proxy is up and running."
-      return
-    fi
-    sleep 1
-  done
-
-  echo "Cloud SQL Proxy failed to start within the timeout period."
-  exit 1
-}
-
-setup_toolbox() {
-  TOOLBOX_YAML="/tools.yaml"
-  echo "${TOOLS_YAML_CONTENT}" > "$TOOLBOX_YAML"
-  if [ ! -f "$TOOLBOX_YAML" ]; then echo "Failed to create tools.yaml"; exit 1; fi
-  wget "https://storage.googleapis.com/genai-toolbox/v${VERSION}/linux/amd64/toolbox" -O "/toolbox"
-  chmod +x "/toolbox"
-  /toolbox --tools-file "$TOOLBOX_YAML" &
-  TOOLBOX_PID=$!
-  sleep 2
-}
-
-setup_orch_table() {
-  export TABLE_NAME
-  envsubst < "$SQL_FILE" | psql -h "$PGHOST" -p "$PGPORT" -U "$DB_USER" -d "$DATABASE_NAME"
-}
-
-run_orch_test() {
-  local orch_dir="$1"
-  local orch_name
-  orch_name=$(basename "$orch_dir")
-
-  (
-    set -e
-    echo "--- Preparing environment for $orch_name ---"
-    setup_orch_table
-
-    cd "$orch_dir"
-    echo "Installing dependencies for $orch_name..."
-    if [ -f "package-lock.json" ]; then
-      npm ci
-    else
-      npm install
-    fi
-
-    cd ..
-
-    echo "--- Running tests for $orch_name ---"
-    export ORCH_NAME="$orch_name"
-    node --test quickstart.test.js
-
-    echo "--- Cleaning environment for $orch_name ---"
-    rm -rf "${orch_name}/node_modules"
-  )
-}
-
-cleanup_all() {
-  echo "--- Final cleanup: Shutting down processes and dropping table ---"
-  if [ -n "$TOOLBOX_PID" ]; then
-    kill $TOOLBOX_PID || true
-  fi
-  if [ -n "$PROXY_PID" ]; then
-    kill $PROXY_PID || true
-  fi
-}
-trap cleanup_all EXIT
-
-# Main script execution
-install_system_packages
-start_cloud_sql_proxy
-
-export PGHOST=127.0.0.1
-export PGPORT=5432
-export PGPASSWORD="$DB_PASSWORD"
-export GOOGLE_API_KEY="$GOOGLE_API_KEY"
-
-setup_toolbox
-
-for ORCH_DIR in "$QUICKSTART_JS_DIR"/*/; do
-  if [ ! -d "$ORCH_DIR" ]; then
-    continue
-  fi
-  run_orch_test "$ORCH_DIR"
-done

.ci/quickstart_test/run_py_tests.sh

@@ -1,115 +0,0 @@
-# Copyright 2025 Google LLC
-# 
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-# 
-#      http://www.apache.org/licenses/LICENSE-2.0
-# 
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-#!/bin/bash
-
-set -e
-
-TABLE_NAME="hotels_python"
-QUICKSTART_PYTHON_DIR="docs/en/getting-started/quickstart/python"
-SQL_FILE=".ci/quickstart_test/setup_hotels_sample.sql"
-
-PROXY_PID=""
-TOOLBOX_PID=""
-
-install_system_packages() {
-  apt-get update && apt-get install -y \
-    postgresql-client \
-    python3-venv \
-    wget \
-    gettext-base  \
-    netcat-openbsd
-}
-
-start_cloud_sql_proxy() {
-  wget "https://storage.googleapis.com/cloud-sql-connectors/cloud-sql-proxy/v2.10.0/cloud-sql-proxy.linux.amd64" -O /usr/local/bin/cloud-sql-proxy
-  chmod +x /usr/local/bin/cloud-sql-proxy
-  cloud-sql-proxy "${CLOUD_SQL_INSTANCE}" &
-  PROXY_PID=$!
-
-  for i in {1..30}; do
-    if nc -z 127.0.0.1 5432; then
-      echo "Cloud SQL Proxy is up and running."
-      return
-    fi
-    sleep 1
-  done
-
-  echo "Cloud SQL Proxy failed to start within the timeout period."
-  exit 1
-}
-
-setup_toolbox() {
-  TOOLBOX_YAML="/tools.yaml"
-  echo "${TOOLS_YAML_CONTENT}" > "$TOOLBOX_YAML"
-  if [ ! -f "$TOOLBOX_YAML" ]; then echo "Failed to create tools.yaml"; exit 1; fi
-  wget "https://storage.googleapis.com/genai-toolbox/v${VERSION}/linux/amd64/toolbox" -O "/toolbox"
-  chmod +x "/toolbox"
-  /toolbox --tools-file "$TOOLBOX_YAML" &
-  TOOLBOX_PID=$!
-  sleep 2
-}
-
-setup_orch_table() {
-  export TABLE_NAME
-  envsubst < "$SQL_FILE" | psql -h "$PGHOST" -p "$PGPORT" -U "$DB_USER" -d "$DATABASE_NAME"
-}
-
-run_orch_test() {
-  local orch_dir="$1"
-  local orch_name
-  orch_name=$(basename "$orch_dir")
-  (
-    set -e
-    setup_orch_table
-    cd "$orch_dir"
-    local VENV_DIR=".venv"
-    python3 -m venv "$VENV_DIR"
-    source "$VENV_DIR/bin/activate"
-    pip install -r requirements.txt
-    echo "--- Running tests for $orch_name ---"
-    cd ..
-    ORCH_NAME="$orch_name" pytest
-    rm -rf "$VENV_DIR"
-  )
-}
-
-cleanup_all() {
-  echo "--- Final cleanup: Shutting down processes and dropping table ---"
-  if [ -n "$TOOLBOX_PID" ]; then
-    kill $TOOLBOX_PID || true
-  fi
-  if [ -n "$PROXY_PID" ]; then
-    kill $PROXY_PID || true
-  fi
-}
-trap cleanup_all EXIT
-
-# Main script execution
-install_system_packages
-start_cloud_sql_proxy
-
-export PGHOST=127.0.0.1
-export PGPORT=5432
-export PGPASSWORD="$DB_PASSWORD"
-export GOOGLE_API_KEY="$GOOGLE_API_KEY"
-
-setup_toolbox
-
-for ORCH_DIR in "$QUICKSTART_PYTHON_DIR"/*/; do
-  if [ ! -d "$ORCH_DIR" ]; then
-    continue
-  fi
-  run_orch_test "$ORCH_DIR"
-done

.ci/sample_tests/pre_post_processing/py.integration.cloudbuild.yaml

@@ -0,0 +1,57 @@
+# Copyright 2026 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+steps:
+  - name: "${_IMAGE}"
+    id: "py-pre-post-processing-test"
+    entrypoint: "bash"
+    args:
+      - -c
+      - |
+        set -ex
+        chmod +x .ci/sample_tests/run_tests.sh
+        .ci/sample_tests/run_tests.sh
+    env:
+      - "CLOUD_SQL_INSTANCE=${_CLOUD_SQL_INSTANCE}"
+      - "GCP_PROJECT=${_GCP_PROJECT}"
+      - "DATABASE_NAME=${_DATABASE_NAME}"
+      - "DB_USER=${_DB_USER}"
+      - "TARGET_ROOT=${_TARGET_ROOT}"
+      - "TARGET_LANG=${_TARGET_LANG}"
+      - "TABLE_NAME=${_TABLE_NAME}"
+      - "SQL_FILE=${_SQL_FILE}"
+      - "AGENT_FILE_PATTERN=${_AGENT_FILE_PATTERN}"
+    secretEnv: ["TOOLS_YAML_CONTENT", "GOOGLE_API_KEY", "DB_PASSWORD"]
+
+availableSecrets:
+  secretManager:
+    - versionName: projects/${_GCP_PROJECT}/secrets/${_TOOLS_YAML_SECRET}/versions/5
+      env: "TOOLS_YAML_CONTENT"
+    - versionName: projects/${_GCP_PROJECT_NUMBER}/secrets/${_API_KEY_SECRET}/versions/latest
+      env: "GOOGLE_API_KEY"
+    - versionName: projects/${_GCP_PROJECT}/secrets/${_DB_PASS_SECRET}/versions/latest
+      env: "DB_PASSWORD"
+
+timeout: 1200s
+
+substitutions:
+  _TARGET_LANG: "python"
+  _IMAGE: "gcr.io/google.com/cloudsdktool/cloud-sdk:537.0.0"
+  _TARGET_ROOT: "docs/en/samples/pre_post_processing/python"
+  _TABLE_NAME: "hotels_py_pre_post_processing"
+  _SQL_FILE: ".ci/sample_tests/setup_hotels.sql"
+  _AGENT_FILE_PATTERN: "agent.py"
+
+options:
+  logging: CLOUD_LOGGING_ONLY

.ci/sample_tests/quickstart/go.integration.cloudbuild.yaml

@@ -23,13 +23,18 @@ steps:
       - |
         set -ex
         export VERSION=$(cat ./cmd/version.txt)
-        chmod +x .ci/quickstart_test/run_go_tests.sh
-        .ci/quickstart_test/run_go_tests.sh
+        chmod +x .ci/sample_tests/run_tests.sh
+        .ci/sample_tests/run_tests.sh
     env:
       - 'CLOUD_SQL_INSTANCE=${_CLOUD_SQL_INSTANCE}'
       - 'GCP_PROJECT=${_GCP_PROJECT}'
       - 'DATABASE_NAME=${_DATABASE_NAME}'
       - 'DB_USER=${_DB_USER}'
+      - 'TARGET_ROOT=docs/en/getting-started/quickstart/go'
+      - 'TARGET_LANG=go'
+      - 'TABLE_NAME=hotels_go'
+      - 'SQL_FILE=.ci/sample_tests/setup_hotels.sql'
+      - 'AGENT_FILE_PATTERN=quickstart.go'
     secretEnv: ['TOOLS_YAML_CONTENT', 'GOOGLE_API_KEY', 'DB_PASSWORD']
 
 availableSecrets:

.ci/sample_tests/quickstart/js.integration.cloudbuild.yaml

@@ -23,13 +23,18 @@ steps:
       - |
         set -ex
         export VERSION=$(cat ./cmd/version.txt)
-        chmod +x .ci/quickstart_test/run_js_tests.sh
-        .ci/quickstart_test/run_js_tests.sh
+        chmod +x .ci/sample_tests/run_tests.sh
+        .ci/sample_tests/run_tests.sh
     env:
       - 'CLOUD_SQL_INSTANCE=${_CLOUD_SQL_INSTANCE}'
       - 'GCP_PROJECT=${_GCP_PROJECT}'
       - 'DATABASE_NAME=${_DATABASE_NAME}'
       - 'DB_USER=${_DB_USER}'
+      - 'TARGET_ROOT=docs/en/getting-started/quickstart/js'
+      - 'TARGET_LANG=js'
+      - 'TABLE_NAME=hotels_js'
+      - 'SQL_FILE=.ci/sample_tests/setup_hotels.sql'
+      - 'AGENT_FILE_PATTERN=quickstart.js'
     secretEnv: ['TOOLS_YAML_CONTENT', 'GOOGLE_API_KEY', 'DB_PASSWORD']
 
 availableSecrets:

.ci/sample_tests/quickstart/py.integration.cloudbuild.yaml

@@ -23,13 +23,18 @@ steps:
       - |
         set -ex
         export VERSION=$(cat ./cmd/version.txt)
-        chmod +x .ci/quickstart_test/run_py_tests.sh
-        .ci/quickstart_test/run_py_tests.sh
+        chmod +x .ci/sample_tests/run_tests.sh
+        .ci/sample_tests/run_tests.sh
     env:
       - 'CLOUD_SQL_INSTANCE=${_CLOUD_SQL_INSTANCE}'
       - 'GCP_PROJECT=${_GCP_PROJECT}'
       - 'DATABASE_NAME=${_DATABASE_NAME}'
       - 'DB_USER=${_DB_USER}'
+      - 'TARGET_ROOT=docs/en/getting-started/quickstart/python'
+      - 'TARGET_LANG=python'
+      - 'TABLE_NAME=hotels_python'
+      - 'SQL_FILE=.ci/sample_tests/setup_hotels.sql'
+      - 'AGENT_FILE_PATTERN=quickstart.py'
     secretEnv: ['TOOLS_YAML_CONTENT', 'GOOGLE_API_KEY', 'DB_PASSWORD']
 
 availableSecrets:

.ci/sample_tests/run_tests.sh

@@ -0,0 +1,202 @@
+# Copyright 2026 Google LLC
+# 
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+# 
+#      http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -e
+
+# --- Configuration (from Environment Variables) ---
+# TARGET_ROOT: The directory to search for tests (e.g., docs/en/getting-started/quickstart/js)
+# TARGET_LANG: python, js, go
+# TABLE_NAME: Database table name to use
+# SQL_FILE: Path to the SQL setup file
+# AGENT_FILE_PATTERN: Filename to look for (e.g., quickstart.js or agent.py)
+
+VERSION=$(cat ./cmd/version.txt)
+
+# Process IDs & Logs
+PROXY_PID=""
+TOOLBOX_PID=""
+PROXY_LOG="cloud_sql_proxy.log"
+TOOLBOX_LOG="toolbox_server.log"
+
+install_system_packages() {
+  echo "Installing system packages..."
+  apt-get update && apt-get install -y \
+    postgresql-client \
+    wget \
+    gettext-base  \
+    netcat-openbsd
+    
+  if [[ "$TARGET_LANG" == "python" ]]; then
+    apt-get install -y python3-venv
+  fi
+}
+
+start_cloud_sql_proxy() {
+  echo "Starting Cloud SQL Proxy..."
+  wget -q "https://storage.googleapis.com/cloud-sql-connectors/cloud-sql-proxy/v2.10.0/cloud-sql-proxy.linux.amd64" -O /usr/local/bin/cloud-sql-proxy
+  chmod +x /usr/local/bin/cloud-sql-proxy
+  cloud-sql-proxy "${CLOUD_SQL_INSTANCE}" > "$PROXY_LOG" 2>&1 &
+  PROXY_PID=$!
+
+  # Health Check
+  for i in {1..30}; do
+    if nc -z 127.0.0.1 5432; then
+      echo "Cloud SQL Proxy is up and running."
+      return
+    fi
+    sleep 1
+  done
+  echo "ERROR: Cloud SQL Proxy failed to start. Logs:"
+  cat "$PROXY_LOG"
+  exit 1
+}
+
+setup_toolbox() {
+  echo "Setting up Toolbox server..."
+  TOOLBOX_YAML="/tools.yaml"
+  echo "${TOOLS_YAML_CONTENT}" > "$TOOLBOX_YAML"
+  wget -q "https://storage.googleapis.com/genai-toolbox/v${VERSION}/linux/amd64/toolbox" -O "/toolbox"
+  chmod +x "/toolbox"
+  /toolbox --tools-file "$TOOLBOX_YAML" > "$TOOLBOX_LOG" 2>&1 &
+  TOOLBOX_PID=$!
+  
+  # Health Check
+  for i in {1..15}; do
+    if nc -z 127.0.0.1 5000; then
+      echo "Toolbox server is up and running."
+      return
+    fi
+    sleep 1
+  done
+  echo "ERROR: Toolbox server failed to start. Logs:"
+  cat "$TOOLBOX_LOG"
+  exit 1
+}
+
+setup_db_table() {
+  echo "Setting up database table $TABLE_NAME using $SQL_FILE..."
+  export TABLE_NAME
+  envsubst < "$SQL_FILE" | psql -h 127.0.0.1 -p 5432 -U "$DB_USER" -d "$DATABASE_NAME"
+}
+
+run_python_test() {
+  local dir=$1
+  local name=$(basename "$dir")
+  echo "--- Running Python Test: $name ---"
+  (
+    cd "$dir"
+    python3 -m venv .venv
+    source .venv/bin/activate
+    pip install -q -r requirements.txt pytest
+    
+    cd ..
+    local test_file=$(find . -maxdepth 1 -name "*test.py" | head -n 1)
+    if [ -n "$test_file" ]; then
+        echo "Found native test: $test_file. Running pytest..."
+        export ORCH_NAME="$name"
+        export PYTHONPATH="../"
+        pytest "$test_file"
+    else
+        echo "No native test found. running agent directly..."
+        export PYTHONPATH="../"
+        python3 "${name}/${AGENT_FILE_PATTERN}"
+    fi
+    rm -rf "${name}/.venv"
+  )
+}
+
+run_js_test() {
+  local dir=$1
+  local name=$(basename "$dir")
+  echo "--- Running JS Test: $name ---"
+  (
+    cd "$dir"
+    if [ -f "package-lock.json" ]; then npm ci -q; else npm install -q; fi
+    
+    cd ..
+    # Looking for a JS test file in the parent directory
+    local test_file=$(find . -maxdepth 1 -name "*test.js" | head -n 1)
+    if [ -n "$test_file" ]; then
+        echo "Found native test: $test_file. Running node --test..."
+        export ORCH_NAME="$name"
+        node --test "$test_file"
+    else
+        echo "No native test found. running agent directly..."
+        node "${name}/${AGENT_FILE_PATTERN}"
+    fi
+    rm -rf "${name}/node_modules"
+  )
+}
+
+run_go_test() {
+  local dir=$1
+  local name=$(basename "$dir")
+
+  if [ "$name" == "openAI" ]; then
+      echo -e "\nSkipping framework '${name}': Temporarily excluded."
+      return
+  fi
+
+  echo "--- Running Go Test: $name ---"
+  (
+    cd "$dir"
+    if [ -f "go.mod" ]; then
+      go mod tidy
+    fi
+    
+    cd ..
+    local test_file=$(find . -maxdepth 1 -name "*test.go" | head -n 1)
+    if [ -n "$test_file" ]; then
+        echo "Found native test: $test_file. Running go test..."
+        export ORCH_NAME="$name"
+        go test -v ./...
+    else
+        echo "No native test found. running agent directly..."
+        cd "$name"
+        go run "."
+    fi
+  )
+}
+
+cleanup() {
+  echo "Cleaning up background processes..."
+  [ -n "$TOOLBOX_PID" ] && kill "$TOOLBOX_PID" || true
+  [ -n "$PROXY_PID" ] && kill "$PROXY_PID" || true
+}
+trap cleanup EXIT
+
+# --- Execution ---
+install_system_packages
+start_cloud_sql_proxy
+
+export PGHOST=127.0.0.1
+export PGPORT=5432
+export PGPASSWORD="$DB_PASSWORD"
+export GOOGLE_API_KEY="$GOOGLE_API_KEY"
+
+setup_toolbox
+setup_db_table
+
+echo "Scanning $TARGET_ROOT for tests with pattern $AGENT_FILE_PATTERN..."
+
+find "$TARGET_ROOT" -name "$AGENT_FILE_PATTERN" | while read -r agent_file; do
+    sample_dir=$(dirname "$agent_file")
+    if [[ "$TARGET_LANG" == "python" ]]; then
+        run_python_test "$sample_dir"
+    elif [[ "$TARGET_LANG" == "js" ]]; then
+        run_js_test "$sample_dir"
+    elif [[ "$TARGET_LANG" == "go" ]]; then
+        run_go_test "$sample_dir"
+    fi
+done

.github/workflows/deploy_dev_docs.yaml

@@ -40,7 +40,7 @@ jobs:
       group: docs-deployment
       cancel-in-progress: false
     steps:
-      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
         with:
           fetch-depth: 0 # Fetch all history for .GitInfo and .Lastmod
 
@@ -56,7 +56,7 @@ jobs:
           node-version: "22"
 
       - name: Cache dependencies
-        uses: actions/cache@8b402f58fbc84540c8b491a91e594a4576fec3d7 # v5
+        uses: actions/cache@cdf6c1fa76f9f475f3d7449005a359c84ca0f306 # v5
         with:
           path: ~/.npm
           key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}

.github/workflows/deploy_previous_version_docs.yaml

@@ -30,14 +30,14 @@ jobs:
 
     steps:
       - name: Checkout main branch (for latest templates and theme)
-        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
         with:
           ref: 'main'
           submodules: 'recursive'
           fetch-depth: 0
 
       - name: Checkout old content from tag into a temporary directory
-        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
         with:
           ref: ${{ github.event.inputs.version_tag }}
           path: 'old_version_source' # Checkout into a temp subdir

.github/workflows/deploy_versioned_docs.yaml

@@ -30,7 +30,7 @@ jobs:
       cancel-in-progress: false
     steps:
       - name: Checkout Code at Tag
-        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
         with:
           ref: ${{ github.event.release.tag_name }}
 

.github/workflows/docs_preview_clean.yaml

@@ -34,7 +34,7 @@ jobs:
       group: "preview-${{ github.event.number }}"
       cancel-in-progress: true
     steps:
-      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
         with:
           ref: versioned-gh-pages
 

.github/workflows/docs_preview_deploy.yaml

@@ -49,7 +49,7 @@ jobs:
       group: "preview-${{ github.event.number }}"
       cancel-in-progress: true
     steps:
-      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
         with:
           # Checkout the PR's HEAD commit (supports forks).
           ref: ${{ github.event.pull_request.head.sha }}
@@ -67,7 +67,7 @@ jobs:
           node-version: "22"
 
       - name: Cache dependencies
-        uses: actions/cache@8b402f58fbc84540c8b491a91e594a4576fec3d7 # v5
+        uses: actions/cache@cdf6c1fa76f9f475f3d7449005a359c84ca0f306 # v5
         with:
           path: ~/.npm
           key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}

.github/workflows/link_checker_workflow.yaml

@@ -22,39 +22,73 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        with:
+          fetch-depth: 0
+      - name: Identify Changed Files
+        id: changed-files
+        shell: bash
+        run: |
+          git fetch origin main
+          CHANGED_FILES=$(git diff --name-only --diff-filter=ACMRT origin/main...HEAD)
+
+          if [ -z "$CHANGED_FILES" ]; then
+            echo "No markdown files changed. Skipping checks."
+            echo "HAS_CHANGES=false" >> $GITHUB_ENV
+          else
+            echo "--- Changed Files to Scan ---"
+            echo "$CHANGED_FILES"
+            echo "-----------------------------"
+            
+            # Flatten newlines to spaces for the args list
+            FILES_FLAT=$(echo "$CHANGED_FILES" | tr '\n' ' ')
+            
+            echo "CHECK_FILES=$FILES_FLAT" >> $GITHUB_ENV
+            echo "HAS_CHANGES=true" >> $GITHUB_ENV
+          fi
+
+
 
       - name: Restore lychee cache
-        uses: actions/cache@8b402f58fbc84540c8b491a91e594a4576fec3d7 # v5
+        if: env.HAS_CHANGES == 'true'
+        uses: actions/cache@cdf6c1fa76f9f475f3d7449005a359c84ca0f306 # v5
         with:
           path: .lycheecache
           key: cache-lychee-${{ github.sha }}
           restore-keys: cache-lychee-
 
       - name: Link Checker
+        id: lychee-check       
+        if: env.HAS_CHANGES == 'true'
         uses: lycheeverse/lychee-action@a8c4c7cb88f0c7386610c35eb25108e448569cb0 # v2
+        continue-on-error: true 
         with:
           args: >
-            --verbose
+            --quiet
             --no-progress
             --cache
             --max-cache-age 1d
             --exclude '^neo4j\+.*' --exclude '^bolt://.*'
-            README.md
-            docs/
-          output: /tmp/foo.txt
-          fail: true
-          jobSummary: true
-          debug: true
+            ${{ env.CHECK_FILES }}
+          output: lychee-report.md
+          format: markdown
+          fail: true           
+          jobSummary: false    
+          debug: false
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      # This step only runs if the 'lychee_check' step fails, ensuring the 
-      # context note only appears when the developer needs to troubleshoot.
-      - name: Display Link Context Note on Failure
-        if: ${{ failure() }}
+
+      - name: Display Failure Report
+        # Run this ONLY if the link checker failed
+        if: steps.lychee-check.outcome == 'failure'
         run: |
           echo "## Link Resolution Note" >> $GITHUB_STEP_SUMMARY
           echo "Local links and directory changes work differently on GitHub than on the docsite." >> $GITHUB_STEP_SUMMARY
           echo "You must ensure fixes pass the **GitHub check** and also work with **\`hugo server\`**." >> $GITHUB_STEP_SUMMARY
+          echo "See [Link Checking and Fixing with Lychee](https://github.com/googleapis/genai-toolbox/blob/main/DEVELOPER.md#link-checking-and-fixing-with-lychee) for more details." >> $GITHUB_STEP_SUMMARY
           echo "---" >> $GITHUB_STEP_SUMMARY
 
+          echo "### Broken Links Found" >> $GITHUB_STEP_SUMMARY
+          cat ./lychee-report.md >> $GITHUB_STEP_SUMMARY
+
+          exit 1

.github/workflows/publish-mcp.yml

@@ -29,7 +29,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
 
       - name: Wait for image in Artifact Registry
         shell: bash

.lycheeignore

@@ -23,8 +23,7 @@ https://cloud.dgraph.io/login
 https://dgraph.io/docs
 
 # MySQL Community downloads and main site (often protected by bot mitigation)
-https://dev.mysql.com/downloads/installer/
-https://www.mysql.com/
+^https?://(.*\.)?mysql\.com/.*
 
 # Claude desktop download link
 https://claude.ai/download
@@ -37,9 +36,9 @@ https://dev.mysql.com/doc/refman/8.4/en/sql-prepared-statements.html
 https://dev.mysql.com/doc/refman/8.4/en/user-names.html
 
 # npmjs links can occasionally trigger rate limiting during high-frequency CI builds
-https://www.npmjs.com/package/@toolbox-sdk/core
-https://www.npmjs.com/package/@toolbox-sdk/adk
+^https?://(www\.)?npmjs\.com/.*
+
 https://www.oceanbase.com/
 
 # Ignore social media and blog profiles to reduce external request overhead
-https://medium.com/@mcp_toolbox
+https://medium.com/@mcp_toolbox

cmd/root.go

@@ -35,6 +35,7 @@ import (
 	yaml "github.com/goccy/go-yaml"
 	"github.com/googleapis/genai-toolbox/internal/auth"
 	"github.com/googleapis/genai-toolbox/internal/cli/invoke"
+	"github.com/googleapis/genai-toolbox/internal/cli/skills"
 	"github.com/googleapis/genai-toolbox/internal/embeddingmodels"
 	"github.com/googleapis/genai-toolbox/internal/log"
 	"github.com/googleapis/genai-toolbox/internal/prebuiltconfigs"
@@ -162,6 +163,7 @@ import (
 	_ "github.com/googleapis/genai-toolbox/internal/tools/looker/lookerrundashboard"
 	_ "github.com/googleapis/genai-toolbox/internal/tools/looker/lookerrunlook"
 	_ "github.com/googleapis/genai-toolbox/internal/tools/looker/lookerupdateprojectfile"
+	_ "github.com/googleapis/genai-toolbox/internal/tools/looker/lookervalidateproject"
 	_ "github.com/googleapis/genai-toolbox/internal/tools/mindsdb/mindsdbexecutesql"
 	_ "github.com/googleapis/genai-toolbox/internal/tools/mindsdb/mindsdbsql"
 	_ "github.com/googleapis/genai-toolbox/internal/tools/mongodb/mongodbaggregate"
@@ -401,6 +403,8 @@ func NewCommand(opts ...Option) *Command {
 
 	// Register subcommands for tool invocation
 	baseCmd.AddCommand(invoke.NewCommand(cmd))
+	// Register subcommands for skill generation
+	baseCmd.AddCommand(skills.NewCommand(cmd))
 
 	return cmd
 }

cmd/root_test.go

@@ -2370,7 +2370,7 @@ func TestPrebuiltTools(t *testing.T) {
 			wantToolset: server.ToolsetConfigs{
 				"looker_tools": tools.ToolsetConfig{
 					Name:      "looker_tools",
-					ToolNames: []string{"get_models", "get_explores", "get_dimensions", "get_measures", "get_filters", "get_parameters", "query", "query_sql", "query_url", "get_looks", "run_look", "make_look", "get_dashboards", "run_dashboard", "make_dashboard", "add_dashboard_element", "add_dashboard_filter", "generate_embed_url", "health_pulse", "health_analyze", "health_vacuum", "dev_mode", "get_projects", "get_project_files", "get_project_file", "create_project_file", "update_project_file", "delete_project_file", "get_connections", "get_connection_schemas", "get_connection_databases", "get_connection_tables", "get_connection_table_columns"},
+					ToolNames: []string{"get_models", "get_explores", "get_dimensions", "get_measures", "get_filters", "get_parameters", "query", "query_sql", "query_url", "get_looks", "run_look", "make_look", "get_dashboards", "run_dashboard", "make_dashboard", "add_dashboard_element", "add_dashboard_filter", "generate_embed_url", "health_pulse", "health_analyze", "health_vacuum", "dev_mode", "get_projects", "get_project_files", "get_project_file", "create_project_file", "update_project_file", "delete_project_file", "validate_project", "get_connections", "get_connection_schemas", "get_connection_databases", "get_connection_tables", "get_connection_table_columns"},
 				},
 			},
 		},

cmd/skill_generate_test.go

@@ -0,0 +1,179 @@
+// Copyright 2026 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"context"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+	"time"
+)
+
+func TestGenerateSkill(t *testing.T) {
+	// Create a temporary directory for tests
+	tmpDir := t.TempDir()
+	outputDir := filepath.Join(tmpDir, "skills")
+
+	// Create a tools.yaml file with a sqlite tool
+	toolsFileContent := `
+sources:
+  my-sqlite:
+    kind: sqlite
+    database: test.db
+tools:
+  hello-sqlite:
+    kind: sqlite-sql
+    source: my-sqlite
+    description: "hello tool"
+    statement: "SELECT 'hello' as greeting"
+`
+
+	toolsFilePath := filepath.Join(tmpDir, "tools.yaml")
+	if err := os.WriteFile(toolsFilePath, []byte(toolsFileContent), 0644); err != nil {
+		t.Fatalf("failed to write tools file: %v", err)
+	}
+
+	args := []string{
+		"skills-generate",
+		"--tools-file", toolsFilePath,
+		"--output-dir", outputDir,
+		"--name", "hello-sqlite",
+		"--description", "hello tool",
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	defer cancel()
+
+	_, got, err := invokeCommandWithContext(ctx, args)
+	if err != nil {
+		t.Fatalf("command failed: %v\nOutput: %s", err, got)
+	}
+
+	// Verify generated directory structure
+	skillPath := filepath.Join(outputDir, "hello-sqlite")
+	if _, err := os.Stat(skillPath); os.IsNotExist(err) {
+		t.Fatalf("skill directory not created: %s", skillPath)
+	}
+
+	// Check SKILL.md
+	skillMarkdown := filepath.Join(skillPath, "SKILL.md")
+	content, err := os.ReadFile(skillMarkdown)
+	if err != nil {
+		t.Fatalf("failed to read SKILL.md: %v", err)
+	}
+
+	expectedFrontmatter := `---
+name: hello-sqlite
+description: hello tool
+---`
+	if !strings.HasPrefix(string(content), expectedFrontmatter) {
+		t.Errorf("SKILL.md does not have expected frontmatter format.\nExpected prefix:\n%s\nGot:\n%s", expectedFrontmatter, string(content))
+	}
+
+	if !strings.Contains(string(content), "## Usage") {
+		t.Errorf("SKILL.md does not contain '## Usage' section")
+	}
+
+	if !strings.Contains(string(content), "## Scripts") {
+		t.Errorf("SKILL.md does not contain '## Scripts' section")
+	}
+
+	if !strings.Contains(string(content), "### hello-sqlite") {
+		t.Errorf("SKILL.md does not contain '### hello-sqlite' tool header")
+	}
+
+	// Check script file
+	scriptFilename := "hello-sqlite.js"
+	scriptPath := filepath.Join(skillPath, "scripts", scriptFilename)
+	if _, err := os.Stat(scriptPath); os.IsNotExist(err) {
+		t.Fatalf("script file not created: %s", scriptPath)
+	}
+
+	scriptContent, err := os.ReadFile(scriptPath)
+	if err != nil {
+		t.Fatalf("failed to read script file: %v", err)
+	}
+	if !strings.Contains(string(scriptContent), "hello-sqlite") {
+		t.Errorf("script file does not contain expected tool name")
+	}
+
+	// Check assets
+	assetPath := filepath.Join(skillPath, "assets", "hello-sqlite.yaml")
+	if _, err := os.Stat(assetPath); os.IsNotExist(err) {
+		t.Fatalf("asset file not created: %s", assetPath)
+	}
+	assetContent, err := os.ReadFile(assetPath)
+	if err != nil {
+		t.Fatalf("failed to read asset file: %v", err)
+	}
+	if !strings.Contains(string(assetContent), "hello-sqlite") {
+		t.Errorf("asset file does not contain expected tool name")
+	}
+}
+
+func TestGenerateSkill_NoConfig(t *testing.T) {
+	tmpDir := t.TempDir()
+	outputDir := filepath.Join(tmpDir, "skills")
+
+	args := []string{
+		"skills-generate",
+		"--output-dir", outputDir,
+		"--name", "test",
+		"--description", "test",
+	}
+
+	_, _, err := invokeCommandWithContext(context.Background(), args)
+	if err == nil {
+		t.Fatal("expected command to fail when no configuration is provided and tools.yaml is missing")
+	}
+
+	// Should not have created the directory if no config was processed
+	if _, err := os.Stat(outputDir); !os.IsNotExist(err) {
+		t.Errorf("output directory should not have been created")
+	}
+}
+
+func TestGenerateSkill_MissingArguments(t *testing.T) {
+	tmpDir := t.TempDir()
+	toolsFilePath := filepath.Join(tmpDir, "tools.yaml")
+	if err := os.WriteFile(toolsFilePath, []byte("tools: {}"), 0644); err != nil {
+		t.Fatalf("failed to write tools file: %v", err)
+	}
+
+	tests := []struct {
+		name string
+		args []string
+	}{
+		{
+			name: "missing name",
+			args: []string{"skills-generate", "--tools-file", toolsFilePath, "--description", "test"},
+		},
+		{
+			name: "missing description",
+			args: []string{"skills-generate", "--tools-file", toolsFilePath, "--name", "test"},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			_, got, err := invokeCommandWithContext(context.Background(), tt.args)
+			if err == nil {
+				t.Fatalf("expected command to fail due to missing arguments, but it succeeded\nOutput: %s", got)
+			}
+		})
+	}
+}

docs/en/getting-started/local_quickstart.md

@@ -115,7 +115,7 @@ pip install google-genai
 
 1. Update `my_agent/agent.py` with the following content to connect to Toolbox:
     ```py
-    {{< include "quickstart/python/adk/quickstart.py" >}}
+    {{< regionInclude "quickstart/python/adk/quickstart.py" "quickstart" >}}
     ```
     <br/>
 

docs/en/getting-started/quickstart/js/adk/package-lock.json

@@ -18,6 +18,7 @@
       "resolved": "https://registry.npmjs.org/@google-cloud/paginator/-/paginator-5.0.2.tgz",
       "integrity": "sha512-DJS3s0OVH4zFDB1PzjxAsHqJT6sKVbRwwML0ZBP9PbU7Yebtu/7SWMRzvO2J3nUi9pRNITCfu4LJeooM2w4pjg==",
       "license": "Apache-2.0",
+      "peer": true,
       "dependencies": {
         "arrify": "^2.0.0",
         "extend": "^3.0.2"
@@ -31,6 +32,7 @@
       "resolved": "https://registry.npmjs.org/@google-cloud/projectify/-/projectify-4.0.0.tgz",
       "integrity": "sha512-MmaX6HeSvyPbWGwFq7mXdo0uQZLGBYCwziiLIGq5JVX+/bdI3SAq6bP98trV5eTWfLuvsMcIC1YJOF2vfteLFA==",
       "license": "Apache-2.0",
+      "peer": true,
       "engines": {
         "node": ">=14.0.0"
       }
@@ -40,15 +42,17 @@
       "resolved": "https://registry.npmjs.org/@google-cloud/promisify/-/promisify-4.0.0.tgz",
       "integrity": "sha512-Orxzlfb9c67A15cq2JQEyVc7wEsmFBmHjZWZYQMUyJ1qivXyMwdyNOs9odi79hze+2zqdTtu1E19IM/FtqZ10g==",
       "license": "Apache-2.0",
+      "peer": true,
       "engines": {
         "node": ">=14"
       }
     },
     "node_modules/@google-cloud/storage": {
-      "version": "7.18.0",
-      "resolved": "https://registry.npmjs.org/@google-cloud/storage/-/storage-7.18.0.tgz",
-      "integrity": "sha512-r3ZwDMiz4nwW6R922Z1pwpePxyRwE5GdevYX63hRmAQUkUQJcBH/79EnQPDv5cOv1mFBgevdNWQfi3tie3dHrQ==",
+      "version": "7.19.0",
+      "resolved": "https://registry.npmjs.org/@google-cloud/storage/-/storage-7.19.0.tgz",
+      "integrity": "sha512-n2FjE7NAOYyshogdc7KQOl/VZb4sneqPjWouSyia9CMDdMhRX5+RIbqalNmC7LOLzuLAN89VlF2HvG8na9G+zQ==",
       "license": "Apache-2.0",
+      "peer": true,
       "dependencies": {
         "@google-cloud/paginator": "^5.0.0",
         "@google-cloud/projectify": "^4.0.0",
@@ -56,7 +60,7 @@
         "abort-controller": "^3.0.0",
         "async-retry": "^1.3.3",
         "duplexify": "^4.1.3",
-        "fast-xml-parser": "^4.4.1",
+        "fast-xml-parser": "^5.3.4",
         "gaxios": "^6.0.2",
         "google-auth-library": "^9.6.3",
         "html-entities": "^2.5.2",
@@ -75,6 +79,7 @@
       "resolved": "https://registry.npmjs.org/uuid/-/uuid-8.3.2.tgz",
       "integrity": "sha512-+NYs2QeMWy+GWFOEm9xnn6HCDp0l7QBD7ml8zLUmJ+93Q5NF0NocErnwkTkXVFNiX3/fpC6afS8Dhb/gz7R7eg==",
       "license": "MIT",
+      "peer": true,
       "bin": {
         "uuid": "dist/bin/uuid"
       }
@@ -97,7 +102,6 @@
       "resolved": "https://registry.npmjs.org/@google/genai/-/genai-1.14.0.tgz",
       "integrity": "sha512-jirYprAAJU1svjwSDVCzyVq+FrJpJd5CSxR/g2Ga/gZ0ZYZpcWjMS75KJl9y71K1mDN+tcx6s21CzCbB2R840g==",
       "license": "Apache-2.0",
-      "peer": true,
       "dependencies": {
         "google-auth-library": "^9.14.2",
         "ws": "^8.18.0"
@@ -136,7 +140,6 @@
       "resolved": "https://registry.npmjs.org/@modelcontextprotocol/sdk/-/sdk-1.17.5.tgz",
       "integrity": "sha512-QakrKIGniGuRVfWBdMsDea/dx1PNE739QJ7gCM41s9q+qaCYTHCdsIBXQVVXry3mfWAiaM9kT22Hyz53Uw8mfg==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "ajv": "^6.12.6",
         "content-type": "^1.0.5",
@@ -299,6 +302,7 @@
       "resolved": "https://registry.npmjs.org/@tootallnate/once/-/once-2.0.0.tgz",
       "integrity": "sha512-XCuKFP5PS55gnMVu3dty8KPatLqUoy/ZYzDzAGCQ8JNFCkLXzmI7vNHCR+XpbZaMWQK/vQubr7PkYq8g470J/A==",
       "license": "MIT",
+      "peer": true,
       "engines": {
         "node": ">= 10"
       }
@@ -307,13 +311,15 @@
       "version": "0.12.5",
       "resolved": "https://registry.npmjs.org/@types/caseless/-/caseless-0.12.5.tgz",
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           "url": "https://github.com/sponsors/NaturalIntelligence"
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docs/en/getting-started/quickstart/js/genkit/package-lock.json

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docs/en/getting-started/quickstart/js/langchain/package-lock.json

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@@ -873,9 +878,9 @@
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     },
     "node_modules/langsmith": {
-      "version": "0.4.3",
-      "resolved": "https://registry.npmjs.org/langsmith/-/langsmith-0.4.3.tgz",
-      "integrity": "sha512-vuBAagBZulXj0rpZhUTxmHhrYIBk53z8e2Q8ty4OHVkahN4ul7Im3OZxD9jsXZB0EuncK1xRYtY8J3BW4vj1zw==",
+      "version": "0.5.2",
+      "resolved": "https://registry.npmjs.org/langsmith/-/langsmith-0.5.2.tgz",
+      "integrity": "sha512-CfkcQsiajtTWknAcyItvJsKEQdY2VgDpm6U8pRI9wnM07mevnOv5EF+RcqWGwx37SEUxtyi2RXMwnKW8b06JtA==",
       "license": "MIT",
       "dependencies": {
         "@types/uuid": "^10.0.0",
@@ -969,6 +974,7 @@
       "version": "4.2.0",
       "resolved": "https://registry.npmjs.org/mustache/-/mustache-4.2.0.tgz",
       "integrity": "sha512-71ippSywq5Yb7/tVYyGbkBggbU8H3u5Rz56fH60jGFgr8uHwxs+aSKeqmluIVzM0m0kB7xQjKS6qPfd0b2ZoqQ==",
+      "peer": true,
       "bin": {
         "mustache": "bin/mustache"
       }
@@ -1407,7 +1413,6 @@
       "version": "3.25.76",
       "resolved": "https://registry.npmjs.org/zod/-/zod-3.25.76.tgz",
       "integrity": "sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ==",
-      "peer": true,
       "funding": {
         "url": "https://github.com/sponsors/colinhacks"
       }

docs/en/getting-started/quickstart/python/adk/quickstart.py

@@ -1,6 +1,21 @@
+# [START quickstart]
+import asyncio
+
 from google.adk import Agent
 from google.adk.apps import App
+from google.adk.runners import InMemoryRunner
 from google.adk.tools.toolbox_toolset import ToolboxToolset
+from google.genai.types import Content, Part
+
+prompt = """
+You're a helpful hotel assistant. You handle hotel searching, booking and
+cancellations. When the user searches for a hotel, mention it's name, id,
+location and price tier. Always mention hotel ids while performing any
+searches. This is very important for any operations. For any bookings or
+cancellations, please provide the appropriate confirmation. Be sure to
+update checkin or checkout dates if mentioned by the user.
+Don't ask for confirmations from the user.
+"""
 
 # TODO(developer): update the TOOLBOX_URL to your toolbox endpoint
 toolset = ToolboxToolset(
@@ -8,10 +23,35 @@ toolset = ToolboxToolset(
 )
 
 root_agent = Agent(
-    name='root_agent',
+    name='hotel_assistant',
     model='gemini-2.5-flash',
-    instruction="You are a helpful AI assistant designed to provide accurate and useful information.",
+    instruction=prompt,
     tools=[toolset],
 )
 
 app = App(root_agent=root_agent, name="my_agent")
+# [END quickstart]
+
+queries = [
+    "Find hotels in Basel with Basel in its name.",
+    "Can you book the Hilton Basel for me?",
+    "Oh wait, this is too expensive. Please cancel it and book the Hyatt Regency instead.",
+    "My check in dates would be from April 10, 2024 to April 19, 2024.",
+]
+
+async def main():
+    runner = InMemoryRunner(app=app)
+    session = await runner.session_service.create_session(
+        app_name=app.name, user_id="test_user"
+    )
+
+    for query in queries:
+        print(f"\nUser: {query}")
+        user_message = Content(parts=[Part.from_text(text=query)])
+
+        async for event in runner.run_async(user_id="test_user", session_id=session.id, new_message=user_message):
+            if event.is_final_response() and event.content and event.content.parts:
+                print(f"Agent: {event.content.parts[0].text}")
+
+if __name__ == "__main__":
+    asyncio.run(main())

docs/en/getting-started/quickstart/python/quickstart_test.py

@@ -41,31 +41,29 @@ def golden_keywords():
 class TestExecution:
     """Test framework execution and output validation."""
 
+    _cached_output = None
+
     @pytest.fixture(scope="function")
     def script_output(self, capsys):
         """Run the quickstart function and return its output."""
-
-        # TODO: Add better validation for ADK once we have a way to capture its
-        # output.
-        if ORCH_NAME == "adk":
-            return quickstart.app.root_agent.name
-        else:
+        if TestExecution._cached_output is None:
             asyncio.run(quickstart.main())
-
-        return capsys.readouterr()
+            out, err = capsys.readouterr()
+            TestExecution._cached_output = (out, err)
+            
+        class Output:
+            def __init__(self, out, err):
+                self.out = out
+                self.err = err
+                
+        return Output(*TestExecution._cached_output)
 
     def test_script_runs_without_errors(self, script_output):
         """Test that the script runs and produces no stderr."""
-        if ORCH_NAME == "adk":
-            return
         assert script_output.err == "", f"Script produced stderr: {script_output.err}"
 
     def test_keywords_in_output(self, script_output, golden_keywords):
         """Test that expected keywords are present in the script's output."""
-        
-        if ORCH_NAME == "adk":
-            assert script_output == "root_agent"
-            return
         output = script_output.out
         missing_keywords = [kw for kw in golden_keywords if kw not in output]
         assert not missing_keywords, f"Missing keywords in output: {missing_keywords}"

docs/en/how-to/connect-ide/postgres_mcp.md

@@ -32,7 +32,7 @@ to expose your developer assistant tools to a Postgres instance:
 
 {{< notice tip >}}
 This guide can be used with [AlloyDB
-Omni](https://cloud.google.com/alloydb/omni/current/docs/overview).
+Omni](https://cloud.google.com/alloydb/omni/docs/overview).
 {{< /notice >}}
 
 ## Set up the database
@@ -40,10 +40,10 @@ Omni](https://cloud.google.com/alloydb/omni/current/docs/overview).
 1. Create or select a PostgreSQL instance.
 
     * [Install PostgreSQL locally](https://www.postgresql.org/download/)
-    * [Install AlloyDB Omni](https://cloud.google.com/alloydb/omni/current/docs/quickstart)
+    * [Install AlloyDB Omni](https://cloud.google.com/alloydb/omni/docs/quickstart)
 
 1. Create or reuse [a database
-   user](https://cloud.google.com/alloydb/omni/current/docs/database-users/manage-users)
+   user](https://docs.cloud.google.com/alloydb/omni/containers/current/docs/database-users/manage-users)
    and have the username and password ready.
 
 ## Install MCP Toolbox

docs/en/how-to/deploy_adk_agent.md

@@ -83,15 +83,12 @@ Toolbox instead of the local address.
 
 2.  Open your agent file (`my_agent/agent.py`).
 
-3.  Update the `ToolboxSyncClient` initialization to use your Cloud Run URL.
+3.  Update the `ToolboxToolset` initialization to point to your Cloud Run service URL. Replace the existing initialization code with the following:
 
-    {{% alert color="info" %}}
-Since Cloud Run services are secured by default, you also need to provide an
-authentication token.
+    {{% alert color="info" title="Note" %}}
+Since Cloud Run services are secured by default, you also need to provide a workload identity.
     {{% /alert %}}
 
-    Replace your existing client initialization code with the following:
-
     ```python
     from google.adk import Agent
     from google.adk.apps import App
@@ -132,14 +129,14 @@ app = App(root_agent=root_agent, name="my_agent")
 Run the deployment command:
 
 ```bash
-make backend
+make deploy
 ```
 
 This command will build your agent's container image and deploy it to Vertex AI.
 
 ## Step 6: Test your Deployment
 
-Once the deployment command (`make backend`) completes, it will output the URL
+Once the deployment command (`make deploy`) completes, it will output the URL
 for the Agent Engine Playground. You can click on this URL to open the
 Playground in your browser and start chatting with your agent to test the tools.
 

docs/en/how-to/generate_skill.md

@@ -0,0 +1,112 @@
+---
+title: "Generate Agent Skills"
+type: docs
+weight: 10
+description: >
+  How to generate agent skills from a toolset.
+---
+
+The `skills-generate` command allows you to convert a **toolset** into an **Agent Skill**. A toolset is a collection of tools, and the generated skill will contain metadata and execution scripts for all tools within that toolset, complying with the [Agent Skill specification](https://agentskills.io/specification).
+
+## Before you begin
+
+1. Make sure you have the `toolbox` executable in your PATH.
+2. Make sure you have [Node.js](https://nodejs.org/) installed on your system.
+
+## Generating a Skill from a Toolset
+
+A skill package consists of a `SKILL.md` file (with required YAML frontmatter) and a set of Node.js scripts. Each tool defined in your toolset maps to a corresponding script in the generated Node.js scripts (`.js`) that work across different platforms (Linux, macOS, Windows).
+
+
+### Command Usage
+
+The basic syntax for the command is:
+
+```bash
+toolbox <tool-source> skills-generate \
+  --name <skill-name> \
+  --toolset <toolset-name> \
+  --description <description> \
+  --output-dir <output-directory>
+```
+
+- `<tool-source>`: Can be `--tools-file`, `--tools-files`, `--tools-folder`, and `--prebuilt`. See the [CLI Reference](../reference/cli.md) for details.
+- `--name`: Name of the generated skill.
+- `--description`: Description of the generated skill.
+- `--toolset`: (Optional) Name of the toolset to convert into a skill. If not provided, all tools will be included.
+- `--output-dir`: (Optional) Directory to output generated skills (default: "skills").
+
+{{< notice note >}}
+**Note:** The `<skill-name>` must follow the Agent Skill [naming convention](https://agentskills.io/specification): it must contain only lowercase alphanumeric characters and hyphens, cannot start or end with a hyphen, and cannot contain consecutive hyphens (e.g., `my-skill`, `data-processing`).
+{{< /notice >}}
+
+### Example: Custom Tools File
+
+1. Create a `tools.yaml` file with a toolset and some tools:
+
+   ```yaml
+   tools:
+     tool_a:
+       description: "First tool"
+       run:
+         command: "echo 'Tool A'"
+     tool_b:
+       description: "Second tool"
+       run:
+         command: "echo 'Tool B'"
+   toolsets:
+     my_toolset:
+       tools:
+         - tool_a
+         - tool_b
+   ```
+
+2. Generate the skill:
+
+   ```bash
+   toolbox --tools-file tools.yaml skills-generate \
+     --name "my-skill" \
+     --toolset "my_toolset" \
+     --description "A skill containing multiple tools" \
+     --output-dir "generated-skills"
+   ```
+
+3. The generated skill directory structure:
+
+   ```text
+   generated-skills/
+   └── my-skill/
+       ├── SKILL.md
+       ├── assets/
+       │   ├── tool_a.yaml
+       │   └── tool_b.yaml
+       └── scripts/
+           ├── tool_a.js
+           └── tool_b.js
+   ```
+
+   In this example, the skill contains two Node.js scripts (`tool_a.js` and `tool_b.js`), each mapping to a tool in the original toolset.
+
+### Example: Prebuilt Configuration
+
+You can also generate skills from prebuilt toolsets:
+
+```bash
+toolbox --prebuilt alloydb-postgres-admin skills-generate \
+  --name "alloydb-postgres-admin" \
+  --description "skill for performing administrative operations on alloydb"
+```
+
+## Installing the Generated Skill in Gemini CLI
+
+Once you have generated a skill, you can install it into the Gemini CLI using the `gemini skills install` command.
+
+### Installation Command
+
+Provide the path to the directory containing the generated skill:
+
+```bash
+gemini skills install /path/to/generated-skills/my-skill
+```
+
+Alternatively, use ~/.gemini/skills as the `--output-dir` to generate the skill straight to the Gemini CLI.

docs/en/how-to/invoke_tool.md

@@ -20,14 +20,15 @@ The `invoke` command allows you to invoke tools defined in your configuration di
 1. Make sure you have the `toolbox` binary installed or built.
 2. Make sure you have a valid tool configuration file (e.g., `tools.yaml`).
 
-## Basic Usage
+### Command Usage
 
 The basic syntax for the command is:
 
 ```bash
-toolbox [--tools-file <path> | --prebuilt <name>] invoke <tool-name> [params]
+toolbox <tool-source> invoke <tool-name> [params]
 ```
 
+- `<tool-source>`: Can be `--tools-file`, `--tools-files`, `--tools-folder`, and `--prebuilt`. See the [CLI Reference](../reference/cli.md) for details.
 - `<tool-name>`: The name of the tool you want to call. This must match the name defined in your `tools.yaml`.
 - `[params]`: (Optional) A JSON string representing the arguments for the tool.
 

docs/en/reference/cli.md

@@ -32,7 +32,8 @@ description: >
 
 ## Sub Commands
 
-### `invoke`
+<details>
+<summary><code>invoke</code></summary>
 
 Executes a tool directly with the provided parameters. This is useful for testing tool configurations and parameters without needing a full client setup.
 
@@ -42,8 +43,36 @@ Executes a tool directly with the provided parameters. This is useful for testin
 toolbox invoke <tool-name> [params]
 ```
 
-- `<tool-name>`: The name of the tool to execute (as defined in your configuration).
-- `[params]`: (Optional) A JSON string containing the parameters for the tool.
+**Arguments:**
+
+- `tool-name`: The name of the tool to execute (as defined in your configuration).
+- `params`: (Optional) A JSON string containing the parameters for the tool.
+
+For more detailed instructions, see [Invoke Tools via CLI](../how-to/invoke_tool.md).
+
+</details>
+
+<details>
+<summary><code>skills-generate</code></summary>
+
+Generates a skill package from a specified toolset. Each tool in the toolset will have a corresponding Node.js execution script in the generated skill.
+
+**Syntax:**
+
+```bash
+toolbox skills-generate --name <name> --description <description> --toolset <toolset> --output-dir <output>
+```
+
+**Flags:**
+
+- `--name`: Name of the generated skill.
+- `--description`: Description of the generated skill.
+- `--toolset`: (Optional) Name of the toolset to convert into a skill. If not provided, all tools will be included.
+- `--output-dir`: (Optional) Directory to output generated skills (default: "skills").
+
+For more detailed instructions, see [Generate Agent Skills](../how-to/generate_skill.md).
+
+</details>
 
 ## Examples
 

docs/en/reference/prebuilt-tools.md

@@ -488,6 +488,7 @@ See [Usage Examples](../reference/cli.md#examples).
     *   `create_project_file`: Create a new LookML file.
     *   `update_project_file`: Update an existing LookML file.
     *   `delete_project_file`: Delete a LookML file.
+    *   `validate_project`: Check the syntax of a LookML project.
     *   `get_connections`: Get the available connections in a Looker instance.
     *   `get_connection_schemas`: Get the available schemas in a connection.
     *   `get_connection_databases`: Get the available databases in a connection.

docs/en/resources/sources/alloydb-pg.md

@@ -194,6 +194,15 @@ Use environment variable replacement with the format ${ENV_NAME}
 instead of hardcoding your secrets into the configuration file.
 {{< /notice >}}
 
+### Managed Connection Pooling
+
+Toolbox automatically supports [Managed Connection Pooling][alloydb-mcp]. If your AlloyDB instance has Managed Connection Pooling enabled, the connection will immediately benefit from increased throughput and reduced latency.
+
+The interface is identical, so there's no additional configuration required on the client. For more information on configuring your instance, see the [AlloyDB Managed Connection Pooling documentation][alloydb-mcp-docs].
+
+[alloydb-mcp]: https://cloud.google.com/blog/products/databases/alloydb-managed-connection-pooling
+[alloydb-mcp-docs]: https://cloud.google.com/alloydb/docs/configure-managed-connection-pooling
+
 ## Reference
 
 | **field** | **type** | **required** | **description**                                                                                                          |

docs/en/resources/sources/cloud-sql-pg.md

@@ -195,6 +195,15 @@ Use environment variable replacement with the format ${ENV_NAME}
 instead of hardcoding your secrets into the configuration file.
 {{< /notice >}}
 
+### Managed Connection Pooling
+
+Toolbox automatically supports [Managed Connection Pooling][csql-mcp]. If your Cloud SQL for PostgreSQL instance has Managed Connection Pooling enabled, the connection will immediately benefit from increased throughput and reduced latency.
+
+The interface is identical, so there's no additional configuration required on the client. For more information on configuring your instance, see the [Cloud SQL Managed Connection Pooling documentation][csql-mcp-docs].
+
+[csql-mcp]: https://docs.cloud.google.com/sql/docs/postgres/managed-connection-pooling
+[csql-mcp-docs]: https://docs.cloud.google.com/sql/docs/postgres/configure-mcp
+
 ## Reference
 
 | **field** | **type** | **required** | **description**                                                                                                          |

docs/en/resources/tools/cloudloggingadmin/_index.md

@@ -0,0 +1,8 @@
+---
+title: "Cloud Logging Admin"
+linkTitle: "Cloud Logging Admin"
+type: docs
+weight: 1
+description: > 
+  Tools that work with Cloud Logging Admin Sources.
+---

docs/en/resources/tools/looker/looker-validate-project.md

@@ -0,0 +1,47 @@
+---
+title: "looker-validate-project"
+type: docs
+weight: 1
+description: >
+  A "looker-validate-project" tool checks the syntax of a LookML project and reports any errors
+aliases:
+- /resources/tools/looker-validate-project
+---
+
+## About
+
+A "looker-validate-project" tool checks the syntax of a LookML project and reports any errors
+
+It's compatible with the following sources:
+
+- [looker](../../sources/looker.md)
+
+`looker-validate-project` accepts a project_id parameter.
+
+## Example
+
+```yaml
+tools:
+    validate_project:
+        kind: looker-validate-project
+        source: looker-source
+        description: |
+          This tool checks a LookML project for syntax errors.
+
+          Prerequisite: The Looker session must be in Development Mode. Use `dev_mode: true` first.
+
+          Parameters:
+          - project_id (required): The unique ID of the LookML project.
+
+          Output:
+          A list of error details including the file path and line number, and also a list of models
+          that are not currently valid due to LookML errors.
+```
+
+## Reference
+
+| **field**   | **type** | **required** | **description**                                    |
+|-------------|:--------:|:------------:|----------------------------------------------------|
+| kind        |  string  |     true     | Must be "looker-validate-project".                 |
+| source      |  string  |     true     | Name of the source Looker instance.                |
+| description |  string  |     true     | Description of the tool that is passed to the LLM. |

docs/en/samples/pre_post_processing/_index.md

@@ -0,0 +1,54 @@
+---
+title: "Pre- and Post- Processing"
+type: docs
+weight: 1
+description: >
+  Intercept and modify interactions between the agent and its tools either before or after a tool is executed.
+---
+
+Pre- and post- processing allow developers to intercept and modify interactions between the agent and its tools or the user.
+
+{{< notice note >}}
+
+These capabilities are typically features of **orchestration frameworks** (like LangChain, LangGraph, or Agent Builder) rather than the Toolbox SDK itself. However, Toolbox tools are designed to fully leverage these framework capabilities to support robust, secure, and compliant agent architectures.
+
+{{< /notice >}}
+
+## Types of Processing
+
+### Pre-processing
+
+Pre-processing occurs before a tool is executed or an agent processes a message. Key types include:
+
+- **Input Sanitization & Redaction**: Detecting and masking sensitive information (like PII) in user queries or tool arguments to prevent it from being logged or sent to unauthorized systems.
+- **Business Logic Validation**: Verifying that the proposed action complies with business rules (e.g., ensuring a requested hotel stay does not exceed 14 days, or checking if a user has sufficient permission).
+- **Security Guardrails**: Analyzing inputs for potential prompt injection attacks or malicious payloads.
+
+### Post-processing
+
+Post-processing occurs after a tool has executed or the model has generated a response. Key types include:
+
+- **Response Enrichment**: Injecting additional data into the tool output that wasn't part of the raw API response (e.g., calculating loyalty points earned based on the booking value).
+- **Output Formatting**: Transforming raw data (like JSON or XML) into a more human-readable or model-friendly format to improve the agent's understanding.
+- **Compliance Auditing**: Logging the final outcome of transactions, including the original request and the result, to a secure audit trail.
+
+## Processing Scopes
+
+While processing logic can be applied at various levels (Agent, Model, Tool), this guide primarily focuses on **Tool Level** processing, which is most relevant for granular control over tool execution.
+
+### Tool Level (Primary Focus)
+
+Wraps individual tool executions. This is best for logic specific to a single tool or a set of tools.
+
+- **Scope**: Intercepts the raw inputs (arguments) to a tool and its outputs.
+- **Use Cases**: Argument validation, output formatting, specific privacy rules for sensitive tools.
+
+### Other Levels
+
+It is helpful to understand how tool-level processing differs from other scopes:
+
+- **Model Level**: Intercepts individual calls to the LLM (prompts and responses). Unlike tool-level, this applies globally to all text sent/received, making it better for global PII redaction or token tracking.
+- **Agent Level**: Wraps the high-level execution loop (e.g., a "turn" in the conversation). Unlike tool-level, this envelopes the entire turn (user input to final response), making it suitable for session management or end-to-end auditing.
+
+
+## Samples

docs/en/samples/pre_post_processing/python.md

@@ -0,0 +1,40 @@
+---
+title: "Python"
+type: docs
+weight: 1
+description: >
+  How to add pre- and post- processing to your Agents using Python.
+---
+
+## Prerequisites
+
+This tutorial assumes that you have set up Toolbox with a basic agent as described in the [local quickstart](../../getting-started/local_quickstart.md).
+
+This guide demonstrates how to implement these patterns in your Toolbox applications.
+
+## Implementation
+
+{{< tabpane persist=header >}}
+{{% tab header="ADK" text=true %}}
+Coming soon.
+{{% /tab %}}
+{{% tab header="Langchain" text=true %}}
+The following example demonstrates how to use `ToolboxClient` with LangChain's middleware to implement pre- and post- processing for tool calls.
+
+```py
+{{< include "python/langchain/agent.py" >}}
+```
+
+You can also add model-level (`wrap_model`) and agent-level (`before_agent`, `after_agent`) hooks to intercept messages at different stages of the execution loop. See the [LangChain Middleware documentation](https://docs.langchain.com/oss/python/langchain/middleware/custom#wrap-style-hooks) for details on these additional hook types.
+{{% /tab %}}
+{{< /tabpane >}}
+
+## Results
+
+The output should look similar to the following. Note that exact responses may vary due to the non-deterministic nature of LLMs and differences between orchestration frameworks.
+
+```
+AI: Booking Confirmed! You earned 500 Loyalty Points with this stay.
+
+AI: Error: Maximum stay duration is 14 days.
+```

docs/en/samples/pre_post_processing/python/__init__.py

@@ -0,0 +1,19 @@
+# Copyright 2026 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+# This file makes the 'pre_post_processing/python' directory a Python package.
+
+# You can include any package-level initialization logic here if needed.
+# For now, this file is empty.

docs/en/samples/pre_post_processing/python/agent_test.py

@@ -0,0 +1,51 @@
+# Copyright 2026 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import asyncio
+import importlib
+import os
+from pathlib import Path
+
+import pytest
+
+ORCH_NAME = os.environ.get("ORCH_NAME")
+module_path = f"python.{ORCH_NAME}.agent"
+agent = importlib.import_module(module_path)
+
+GOLDEN_KEYWORDS = [
+    "AI:",
+    "Loyalty Points",
+    "POLICY CHECK: Intercepting 'update-hotel'",
+]
+
+# --- Execution Tests ---
+class TestExecution:
+    """Test framework execution and output validation."""
+
+    @pytest.fixture(scope="function")
+    def script_output(self, capsys):
+        """Run the agent function and return its output."""
+        asyncio.run(agent.main())
+        return capsys.readouterr()
+
+    def test_script_runs_without_errors(self, script_output):
+        """Test that the script runs and produces no stderr."""
+        assert script_output.err == "", f"Script produced stderr: {script_output.err}"
+
+    def test_keywords_in_output(self, script_output):
+        """Test that expected keywords are present in the script's output."""
+        output = script_output.out
+        print(f"\nAgent Output:\n{output}\n")
+        missing_keywords = [kw for kw in GOLDEN_KEYWORDS if kw not in output]
+        assert not missing_keywords, f"Missing keywords in output: {missing_keywords}"

docs/en/samples/pre_post_processing/python/langchain/agent.py

@@ -0,0 +1,116 @@
+import asyncio
+from datetime import datetime
+
+from langchain.agents import create_agent
+from langchain.agents.middleware import wrap_tool_call
+from langchain_core.messages import ToolMessage
+from langchain_google_vertexai import ChatVertexAI
+from toolbox_langchain import ToolboxClient
+
+system_prompt = """
+  You're a helpful hotel assistant. You handle hotel searching, booking and
+  cancellations. When the user searches for a hotel, mention it's name, id,
+  location and price tier. Always mention hotel ids while performing any
+  searches. This is very important for any operations. For any bookings or
+  cancellations, please provide the appropriate confirmation. Be sure to
+  update checkin or checkout dates if mentioned by the user.
+  Don't ask for confirmations from the user.
+"""
+
+
+# Pre processing
+@wrap_tool_call
+async def enforce_business_rules(request, handler):
+    """
+    Business Logic Validation:
+    Enforces max stay duration (e.g., max 14 days).
+    """
+    tool_call = request.tool_call
+    name = tool_call["name"]
+    args = tool_call["args"]
+
+    print(f"POLICY CHECK: Intercepting '{name}'")
+
+    if name == "update-hotel":
+        if "checkin_date" in args and "checkout_date" in args:
+            try:
+                start = datetime.fromisoformat(args["checkin_date"])
+                end = datetime.fromisoformat(args["checkout_date"])
+                duration = (end - start).days
+
+                if duration > 14:
+                    print("BLOCKED: Stay too long")
+                    return ToolMessage(
+                        content="Error: Maximum stay duration is 14 days.",
+                        tool_call_id=tool_call["id"],
+                    )
+            except ValueError:
+                pass  # Ignore invalid date formats
+
+    # PRE: Code here runs BEFORE the tool execution
+    
+    # EXEC: Execute the tool (or next middleware)
+    result = await handler(request)
+
+    # POST: Code here runs AFTER the tool execution
+    return result
+
+
+# Post processing
+@wrap_tool_call
+async def enrich_response(request, handler):
+    """
+    Post-Processing & Enrichment:
+    Adds loyalty points information to successful bookings.
+    Standardizes output format.
+    """
+    # PRE: Code here runs BEFORE the tool execution
+    
+    # EXEC: Execute the tool (or next middleware)
+    result = await handler(request)
+
+    # POST: Code here runs AFTER the tool execution
+    if isinstance(result, ToolMessage):
+        content = str(result.content)
+        tool_name = request.tool_call["name"]
+
+        if tool_name == "book-hotel" and "Error" not in content:
+            loyalty_bonus = 500
+            result.content = f"Booking Confirmed!\n You earned {loyalty_bonus} Loyalty Points with this stay.\n\nSystem Details: {content}"
+
+    return result
+
+
+async def main():
+    async with ToolboxClient("http://127.0.0.1:5000") as client:
+        tools = await client.aload_toolset("my-toolset")
+        model = ChatVertexAI(model="gemini-2.5-flash")
+        agent = create_agent(
+            system_prompt=system_prompt,
+            model=model,
+            tools=tools,
+            # add any pre and post processing methods
+            middleware=[enforce_business_rules, enrich_response],
+        )
+
+        user_input = "Book hotel with id 3."
+        response = await agent.ainvoke(
+            {"messages": [{"role": "user", "content": user_input}]}
+        )
+
+        print("-" * 50)
+        last_ai_msg = response["messages"][-1].content
+        print(f"AI: {last_ai_msg}")
+
+        # Test Pre-processing
+        print("-" * 50)
+        user_input = "Update my hotel with id 3 with checkin date 2025-01-18 and checkout date 2025-01-20"
+        response = await agent.ainvoke(
+            {"messages": [{"role": "user", "content": user_input}]}
+        )
+        last_ai_msg = response["messages"][-1].content
+        print(f"AI: {last_ai_msg}")
+
+
+if __name__ == "__main__":
+    asyncio.run(main())

docs/en/samples/pre_post_processing/python/langchain/requirements.txt

@@ -0,0 +1,3 @@
+langchain==1.2.6
+langchain-google-vertexai==3.2.2
+toolbox-langchain==0.5.8

internal/cli/skills/command.go

@@ -0,0 +1,237 @@
+// Copyright 2026 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package skills
+
+import (
+	"context"
+	_ "embed"
+	"fmt"
+	"os"
+	"path/filepath"
+	"sort"
+
+	"github.com/googleapis/genai-toolbox/internal/log"
+	"github.com/googleapis/genai-toolbox/internal/server"
+	"github.com/googleapis/genai-toolbox/internal/server/resources"
+	"github.com/googleapis/genai-toolbox/internal/tools"
+
+	"github.com/spf13/cobra"
+)
+
+// RootCommand defines the interface for required by skills-generate subcommand.
+// This allows subcommands to access shared resources and functionality without
+// direct coupling to the root command's implementation.
+type RootCommand interface {
+	// Config returns a copy of the current server configuration.
+	Config() server.ServerConfig
+
+	// LoadConfig loads and merges the configuration from files, folders, and prebuilts.
+	LoadConfig(ctx context.Context) error
+
+	// Setup initializes the runtime environment, including logging and telemetry.
+	// It returns the updated context and a shutdown function to be called when finished.
+	Setup(ctx context.Context) (context.Context, func(context.Context) error, error)
+
+	// Logger returns the logger instance.
+	Logger() log.Logger
+}
+
+// Command is the command for generating skills.
+type Command struct {
+	*cobra.Command
+	rootCmd     RootCommand
+	name        string
+	description string
+	toolset     string
+	outputDir   string
+}
+
+// NewCommand creates a new Command.
+func NewCommand(rootCmd RootCommand) *cobra.Command {
+	cmd := &Command{
+		rootCmd: rootCmd,
+	}
+	cmd.Command = &cobra.Command{
+		Use:   "skills-generate",
+		Short: "Generate skills from tool configurations",
+		RunE: func(c *cobra.Command, args []string) error {
+			return cmd.run(c)
+		},
+	}
+
+	cmd.Flags().StringVar(&cmd.name, "name", "", "Name of the generated skill.")
+	cmd.Flags().StringVar(&cmd.description, "description", "", "Description of the generated skill")
+	cmd.Flags().StringVar(&cmd.toolset, "toolset", "", "Name of the toolset to convert into a skill. If not provided, all tools will be included.")
+	cmd.Flags().StringVar(&cmd.outputDir, "output-dir", "skills", "Directory to output generated skills")
+
+	_ = cmd.MarkFlagRequired("name")
+	_ = cmd.MarkFlagRequired("description")
+	return cmd.Command
+}
+
+func (c *Command) run(cmd *cobra.Command) error {
+	ctx, cancel := context.WithCancel(cmd.Context())
+	defer cancel()
+
+	ctx, shutdown, err := c.rootCmd.Setup(ctx)
+	if err != nil {
+		return err
+	}
+	defer func() {
+		_ = shutdown(ctx)
+	}()
+
+	logger := c.rootCmd.Logger()
+
+	// Load and merge tool configurations
+	if err := c.rootCmd.LoadConfig(ctx); err != nil {
+		return err
+	}
+
+	if err := os.MkdirAll(c.outputDir, 0755); err != nil {
+		errMsg := fmt.Errorf("error creating output directory: %w", err)
+		logger.ErrorContext(ctx, errMsg.Error())
+		return errMsg
+	}
+
+	logger.InfoContext(ctx, fmt.Sprintf("Generating skill '%s'...", c.name))
+
+	// Initialize toolbox and collect tools
+	allTools, err := c.collectTools(ctx)
+	if err != nil {
+		errMsg := fmt.Errorf("error collecting tools: %w", err)
+		logger.ErrorContext(ctx, errMsg.Error())
+		return errMsg
+	}
+
+	if len(allTools) == 0 {
+		logger.InfoContext(ctx, "No tools found to generate.")
+		return nil
+	}
+
+	// Generate the combined skill directory
+	skillPath := filepath.Join(c.outputDir, c.name)
+	if err := os.MkdirAll(skillPath, 0755); err != nil {
+		errMsg := fmt.Errorf("error creating skill directory: %w", err)
+		logger.ErrorContext(ctx, errMsg.Error())
+		return errMsg
+	}
+
+	// Generate assets directory
+	assetsPath := filepath.Join(skillPath, "assets")
+	if err := os.MkdirAll(assetsPath, 0755); err != nil {
+		errMsg := fmt.Errorf("error creating assets dir: %w", err)
+		logger.ErrorContext(ctx, errMsg.Error())
+		return errMsg
+	}
+
+	// Generate scripts directory
+	scriptsPath := filepath.Join(skillPath, "scripts")
+	if err := os.MkdirAll(scriptsPath, 0755); err != nil {
+		errMsg := fmt.Errorf("error creating scripts dir: %w", err)
+		logger.ErrorContext(ctx, errMsg.Error())
+		return errMsg
+	}
+
+	// Iterate over keys to ensure deterministic order
+	var toolNames []string
+	for name := range allTools {
+		toolNames = append(toolNames, name)
+	}
+	sort.Strings(toolNames)
+
+	for _, toolName := range toolNames {
+		// Generate YAML config in asset directory
+		minimizedContent, err := generateToolConfigYAML(c.rootCmd.Config(), toolName)
+		if err != nil {
+			errMsg := fmt.Errorf("error generating filtered config for %s: %w", toolName, err)
+			logger.ErrorContext(ctx, errMsg.Error())
+			return errMsg
+		}
+
+		specificToolsFileName := fmt.Sprintf("%s.yaml", toolName)
+		if minimizedContent != nil {
+			destPath := filepath.Join(assetsPath, specificToolsFileName)
+			if err := os.WriteFile(destPath, minimizedContent, 0644); err != nil {
+				errMsg := fmt.Errorf("error writing filtered config for %s: %w", toolName, err)
+				logger.ErrorContext(ctx, errMsg.Error())
+				return errMsg
+			}
+		}
+
+		// Generate wrapper script in scripts directory
+		scriptContent, err := generateScriptContent(toolName, specificToolsFileName)
+		if err != nil {
+			errMsg := fmt.Errorf("error generating script content for %s: %w", toolName, err)
+			logger.ErrorContext(ctx, errMsg.Error())
+			return errMsg
+		}
+
+		scriptFilename := filepath.Join(scriptsPath, fmt.Sprintf("%s.js", toolName))
+		if err := os.WriteFile(scriptFilename, []byte(scriptContent), 0755); err != nil {
+			errMsg := fmt.Errorf("error writing script %s: %w", scriptFilename, err)
+			logger.ErrorContext(ctx, errMsg.Error())
+			return errMsg
+		}
+	}
+
+	// Generate SKILL.md
+	skillContent, err := generateSkillMarkdown(c.name, c.description, allTools)
+	if err != nil {
+		errMsg := fmt.Errorf("error generating SKILL.md content: %w", err)
+		logger.ErrorContext(ctx, errMsg.Error())
+		return errMsg
+	}
+	skillMdPath := filepath.Join(skillPath, "SKILL.md")
+	if err := os.WriteFile(skillMdPath, []byte(skillContent), 0644); err != nil {
+		errMsg := fmt.Errorf("error writing SKILL.md: %w", err)
+		logger.ErrorContext(ctx, errMsg.Error())
+		return errMsg
+	}
+
+	logger.InfoContext(ctx, fmt.Sprintf("Successfully generated skill '%s' with %d tools.", c.name, len(allTools)))
+
+	return nil
+}
+
+func (c *Command) collectTools(ctx context.Context) (map[string]tools.Tool, error) {
+	// Initialize Resources
+	sourcesMap, authServicesMap, embeddingModelsMap, toolsMap, toolsetsMap, promptsMap, promptsetsMap, err := server.InitializeConfigs(ctx, c.rootCmd.Config())
+	if err != nil {
+		return nil, fmt.Errorf("failed to initialize resources: %w", err)
+	}
+
+	resourceMgr := resources.NewResourceManager(sourcesMap, authServicesMap, embeddingModelsMap, toolsMap, toolsetsMap, promptsMap, promptsetsMap)
+
+	result := make(map[string]tools.Tool)
+
+	if c.toolset == "" {
+		return toolsMap, nil
+	}
+
+	ts, ok := resourceMgr.GetToolset(c.toolset)
+	if !ok {
+		return nil, fmt.Errorf("toolset %q not found", c.toolset)
+	}
+
+	for _, t := range ts.Tools {
+		if t != nil {
+			tool := *t
+			result[tool.McpManifest().Name] = tool
+		}
+	}
+
+	return result, nil
+}

internal/cli/skills/generator.go

@@ -0,0 +1,296 @@
+// Copyright 2026 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package skills
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"sort"
+	"strings"
+	"text/template"
+
+	"github.com/goccy/go-yaml"
+	"github.com/googleapis/genai-toolbox/internal/server"
+	"github.com/googleapis/genai-toolbox/internal/sources"
+	"github.com/googleapis/genai-toolbox/internal/tools"
+	"github.com/googleapis/genai-toolbox/internal/util/parameters"
+)
+
+const skillTemplate = `---
+name: {{.SkillName}}
+description: {{.SkillDescription}}
+---
+
+## Usage
+
+All scripts can be executed using Node.js. Replace ` + "`" + `<param_name>` + "`" + ` and ` + "`" + `<param_value>` + "`" + ` with actual values.
+
+**Bash:**
+` + "`" + `node scripts/<script_name>.js '{"<param_name>": "<param_value>"}'` + "`" + `
+
+**PowerShell:**
+` + "`" + `node scripts/<script_name>.js '{\"<param_name>\": \"<param_value>\"}'` + "`" + `
+
+## Scripts
+
+{{range .Tools}}
+### {{.Name}}
+
+{{.Description}}
+
+{{.ParametersSchema}}
+
+---
+{{end}}
+`
+
+type toolTemplateData struct {
+	Name             string
+	Description      string
+	ParametersSchema string
+}
+
+type skillTemplateData struct {
+	SkillName        string
+	SkillDescription string
+	Tools            []toolTemplateData
+}
+
+// generateSkillMarkdown generates the content of the SKILL.md file.
+// It includes usage instructions and a reference section for each tool in the skill,
+// detailing its description and parameters.
+func generateSkillMarkdown(skillName, skillDescription string, toolsMap map[string]tools.Tool) (string, error) {
+	var toolsData []toolTemplateData
+
+	// Order tools based on name
+	var toolNames []string
+	for name := range toolsMap {
+		toolNames = append(toolNames, name)
+	}
+	sort.Strings(toolNames)
+
+	for _, name := range toolNames {
+		tool := toolsMap[name]
+		manifest := tool.Manifest()
+
+		parametersSchema, err := formatParameters(manifest.Parameters)
+		if err != nil {
+			return "", err
+		}
+
+		toolsData = append(toolsData, toolTemplateData{
+			Name:             name,
+			Description:      manifest.Description,
+			ParametersSchema: parametersSchema,
+		})
+	}
+
+	data := skillTemplateData{
+		SkillName:        skillName,
+		SkillDescription: skillDescription,
+		Tools:            toolsData,
+	}
+
+	tmpl, err := template.New("markdown").Parse(skillTemplate)
+	if err != nil {
+		return "", fmt.Errorf("error parsing markdown template: %w", err)
+	}
+
+	var buf strings.Builder
+	if err := tmpl.Execute(&buf, data); err != nil {
+		return "", fmt.Errorf("error executing markdown template: %w", err)
+	}
+
+	return buf.String(), nil
+}
+
+const nodeScriptTemplate = `#!/usr/bin/env node
+
+const { spawn, execSync } = require('child_process');
+const path = require('path');
+const fs = require('fs');
+
+const toolName = "{{.Name}}";
+const toolsFileName = "{{.ToolsFileName}}";
+
+function getToolboxPath() {
+    try {
+        const checkCommand = process.platform === 'win32' ? 'where toolbox' : 'which toolbox';
+        const globalPath = execSync(checkCommand, { stdio: 'pipe', encoding: 'utf-8' }).trim();
+        if (globalPath) {
+            return globalPath.split('\n')[0].trim();
+        }
+    } catch (e) {
+        // Ignore error;
+    }
+    const localPath = path.resolve(__dirname, '../../../toolbox');
+    if (fs.existsSync(localPath)) {
+        return localPath;
+    }
+    throw new Error("Toolbox binary not found");
+}
+
+let toolboxBinary;
+try {
+    toolboxBinary = getToolboxPath();
+} catch (err) {
+    console.error("Error:", err.message);
+    process.exit(1);
+}
+
+let configArgs = [];
+if (toolsFileName) {
+  configArgs.push("--tools-file", path.join(__dirname, "..", "assets", toolsFileName));
+}
+
+const args = process.argv.slice(2);
+const toolboxArgs = [...configArgs, "invoke", toolName, ...args];
+
+const child = spawn(toolboxBinary, toolboxArgs, { stdio: 'inherit' });
+
+child.on('close', (code) => {
+  process.exit(code);
+});
+
+child.on('error', (err) => {
+  console.error("Error executing toolbox:", err);
+  process.exit(1);
+});
+`
+
+type scriptData struct {
+	Name          string
+	ToolsFileName string
+}
+
+// generateScriptContent creates the content for a Node.js wrapper script.
+// This script invokes the toolbox CLI with the appropriate configuration
+// (using a generated tools file) and arguments to execute the specific tool.
+func generateScriptContent(name string, toolsFileName string) (string, error) {
+	data := scriptData{
+		Name:          name,
+		ToolsFileName: toolsFileName,
+	}
+
+	tmpl, err := template.New("script").Parse(nodeScriptTemplate)
+	if err != nil {
+		return "", fmt.Errorf("error parsing script template: %w", err)
+	}
+
+	var buf strings.Builder
+	if err := tmpl.Execute(&buf, data); err != nil {
+		return "", fmt.Errorf("error executing script template: %w", err)
+	}
+
+	return buf.String(), nil
+}
+
+// formatParameters converts a list of parameter manifests into a formatted JSON schema string.
+// This schema is used in the skill documentation to describe the input parameters for a tool.
+func formatParameters(params []parameters.ParameterManifest) (string, error) {
+	if len(params) == 0 {
+		return "", nil
+	}
+
+	properties := make(map[string]interface{})
+	var required []string
+
+	for _, p := range params {
+		paramMap := map[string]interface{}{
+			"type":        p.Type,
+			"description": p.Description,
+		}
+		if p.Default != nil {
+			paramMap["default"] = p.Default
+		}
+		properties[p.Name] = paramMap
+		if p.Required {
+			required = append(required, p.Name)
+		}
+	}
+
+	schema := map[string]interface{}{
+		"type":       "object",
+		"properties": properties,
+	}
+	if len(required) > 0 {
+		schema["required"] = required
+	}
+
+	schemaJSON, err := json.MarshalIndent(schema, "", "  ")
+	if err != nil {
+		return "", fmt.Errorf("error generating parameters schema: %w", err)
+	}
+
+	return fmt.Sprintf("#### Parameters\n\n```json\n%s\n```", string(schemaJSON)), nil
+}
+
+// generateToolConfigYAML generates the YAML configuration for a single tool and its dependency (source).
+// It extracts the relevant tool and source configurations from the server config and formats them
+// into a YAML document suitable for inclusion in the skill's assets.
+func generateToolConfigYAML(cfg server.ServerConfig, toolName string) ([]byte, error) {
+	toolCfg, ok := cfg.ToolConfigs[toolName]
+	if !ok {
+		return nil, fmt.Errorf("error finding tool config: %s", toolName)
+	}
+
+	var buf bytes.Buffer
+	encoder := yaml.NewEncoder(&buf)
+
+	// Process Tool Config
+	toolWrapper := struct {
+		Kind   string           `yaml:"kind"`
+		Config tools.ToolConfig `yaml:",inline"`
+	}{
+		Kind:   "tools",
+		Config: toolCfg,
+	}
+
+	if err := encoder.Encode(toolWrapper); err != nil {
+		return nil, fmt.Errorf("error encoding tool config: %w", err)
+	}
+
+	// Process Source Config
+	var toolMap map[string]interface{}
+	b, err := yaml.Marshal(toolCfg)
+	if err != nil {
+		return nil, fmt.Errorf("error marshaling tool config: %w", err)
+	}
+	if err := yaml.Unmarshal(b, &toolMap); err != nil {
+		return nil, fmt.Errorf("error unmarshaling tool config map: %w", err)
+	}
+
+	if sourceName, ok := toolMap["source"].(string); ok && sourceName != "" {
+		sourceCfg, ok := cfg.SourceConfigs[sourceName]
+		if !ok {
+			return nil, fmt.Errorf("error finding source config: %s", sourceName)
+		}
+
+		sourceWrapper := struct {
+			Kind   string               `yaml:"kind"`
+			Config sources.SourceConfig `yaml:",inline"`
+		}{
+			Kind:   "sources",
+			Config: sourceCfg,
+		}
+
+		if err := encoder.Encode(sourceWrapper); err != nil {
+			return nil, fmt.Errorf("error encoding source config: %w", err)
+		}
+	}
+
+	return buf.Bytes(), nil
+}

internal/cli/skills/generator_test.go

@@ -0,0 +1,347 @@
+// Copyright 2026 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package skills
+
+import (
+	"context"
+	"strings"
+	"testing"
+
+	"github.com/googleapis/genai-toolbox/internal/server"
+	"github.com/googleapis/genai-toolbox/internal/sources"
+	"github.com/googleapis/genai-toolbox/internal/tools"
+	"github.com/googleapis/genai-toolbox/internal/util/parameters"
+	"go.opentelemetry.io/otel/trace"
+)
+
+type MockToolConfig struct {
+	Name       string                `yaml:"name"`
+	Type       string                `yaml:"type"`
+	Source     string                `yaml:"source"`
+	Other      string                `yaml:"other"`
+	Parameters parameters.Parameters `yaml:"parameters"`
+}
+
+func (m MockToolConfig) ToolConfigType() string {
+	return m.Type
+}
+
+func (m MockToolConfig) Initialize(map[string]sources.Source) (tools.Tool, error) {
+	return nil, nil
+}
+
+type MockSourceConfig struct {
+	Name             string `yaml:"name"`
+	Type             string `yaml:"type"`
+	ConnectionString string `yaml:"connection_string"`
+}
+
+func (m MockSourceConfig) SourceConfigType() string {
+	return m.Type
+}
+
+func (m MockSourceConfig) Initialize(context.Context, trace.Tracer) (sources.Source, error) {
+	return nil, nil
+}
+
+func TestFormatParameters(t *testing.T) {
+	tests := []struct {
+		name         string
+		params       []parameters.ParameterManifest
+		wantContains []string
+		wantErr      bool
+	}{
+		{
+			name:         "empty parameters",
+			params:       []parameters.ParameterManifest{},
+			wantContains: []string{""},
+		},
+		{
+			name: "single required string parameter",
+			params: []parameters.ParameterManifest{
+				{
+					Name:        "param1",
+					Description: "A test parameter",
+					Type:        "string",
+					Required:    true,
+				},
+			},
+			wantContains: []string{
+				"## Parameters",
+				"```json",
+				`"type": "object"`,
+				`"properties": {`,
+				`"param1": {`,
+				`"type": "string"`,
+				`"description": "A test parameter"`,
+				`"required": [`,
+				`"param1"`,
+			},
+		},
+		{
+			name: "mixed parameters with defaults",
+			params: []parameters.ParameterManifest{
+				{
+					Name:        "param1",
+					Description: "Param 1",
+					Type:        "string",
+					Required:    true,
+				},
+				{
+					Name:        "param2",
+					Description: "Param 2",
+					Type:        "integer",
+					Default:     42,
+					Required:    false,
+				},
+			},
+			wantContains: []string{
+				`"param1": {`,
+				`"param2": {`,
+				`"default": 42`,
+				`"required": [`,
+				`"param1"`,
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got, err := formatParameters(tt.params)
+			if (err != nil) != tt.wantErr {
+				t.Errorf("formatParameters() error = %v, wantErr %v", err, tt.wantErr)
+				return
+			}
+			if tt.wantErr {
+				return
+			}
+
+			if len(tt.params) == 0 {
+				if got != "" {
+					t.Errorf("formatParameters() = %v, want empty string", got)
+				}
+				return
+			}
+
+			for _, want := range tt.wantContains {
+				if !strings.Contains(got, want) {
+					t.Errorf("formatParameters() result missing expected string: %s\nGot:\n%s", want, got)
+				}
+			}
+		})
+	}
+}
+
+func TestGenerateSkillMarkdown(t *testing.T) {
+	toolsMap := map[string]tools.Tool{
+		"tool1": server.MockTool{
+			Description: "First tool",
+			Params: []parameters.Parameter{
+				parameters.NewStringParameter("p1", "d1"),
+			},
+		},
+	}
+
+	got, err := generateSkillMarkdown("MySkill", "My Description", toolsMap)
+	if err != nil {
+		t.Fatalf("generateSkillMarkdown() error = %v", err)
+	}
+
+	expectedSubstrings := []string{
+		"name: MySkill",
+		"description: My Description",
+		"## Usage",
+		"All scripts can be executed using Node.js",
+		"**Bash:**",
+		"`node scripts/<script_name>.js '{\"<param_name>\": \"<param_value>\"}'`",
+		"**PowerShell:**",
+		"`node scripts/<script_name>.js '{\"<param_name>\": \"<param_value>\"}'`",
+		"## Scripts",
+		"### tool1",
+		"First tool",
+		"## Parameters",
+	}
+
+	for _, s := range expectedSubstrings {
+		if !strings.Contains(got, s) {
+			t.Errorf("generateSkillMarkdown() missing substring %q", s)
+		}
+	}
+}
+
+func TestGenerateScriptContent(t *testing.T) {
+	tests := []struct {
+		name          string
+		toolName      string
+		toolsFileName string
+		wantContains  []string
+	}{
+		{
+			name:          "basic script",
+			toolName:      "test-tool",
+			toolsFileName: "",
+			wantContains: []string{
+				`const toolName = "test-tool";`,
+				`const toolsFileName = "";`,
+				`const toolboxArgs = [...configArgs, "invoke", toolName, ...args];`,
+			},
+		},
+		{
+			name:          "script with tools file",
+			toolName:      "complex-tool",
+			toolsFileName: "tools.yaml",
+			wantContains: []string{
+				`const toolName = "complex-tool";`,
+				`const toolsFileName = "tools.yaml";`,
+				`configArgs.push("--tools-file", path.join(__dirname, "..", "assets", toolsFileName));`,
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got, err := generateScriptContent(tt.toolName, tt.toolsFileName)
+			if err != nil {
+				t.Fatalf("generateScriptContent() error = %v", err)
+			}
+
+			for _, s := range tt.wantContains {
+				if !strings.Contains(got, s) {
+					t.Errorf("generateScriptContent() missing substring %q\nGot:\n%s", s, got)
+				}
+			}
+		})
+	}
+}
+
+func TestGenerateToolConfigYAML(t *testing.T) {
+	cfg := server.ServerConfig{
+		ToolConfigs: server.ToolConfigs{
+			"tool1": MockToolConfig{
+				Name:   "tool1",
+				Type:   "custom-tool",
+				Source: "src1",
+				Other:  "foo",
+			},
+			"toolNoSource": MockToolConfig{
+				Name: "toolNoSource",
+				Type: "http",
+			},
+			"toolWithParams": MockToolConfig{
+				Name: "toolWithParams",
+				Type: "custom-tool",
+				Parameters: []parameters.Parameter{
+					parameters.NewStringParameter("param1", "desc1"),
+				},
+			},
+			"toolWithMissingSource": MockToolConfig{
+				Name:   "toolWithMissingSource",
+				Type:   "custom-tool",
+				Source: "missing-src",
+			},
+		},
+		SourceConfigs: server.SourceConfigs{
+			"src1": MockSourceConfig{
+				Name:             "src1",
+				Type:             "postgres",
+				ConnectionString: "conn1",
+			},
+		},
+	}
+
+	tests := []struct {
+		name         string
+		toolName     string
+		wantContains []string
+		wantErr      bool
+		wantNil      bool
+	}{
+		{
+			name:     "tool with source",
+			toolName: "tool1",
+			wantContains: []string{
+				"kind: tools",
+				"name: tool1",
+				"type: custom-tool",
+				"source: src1",
+				"other: foo",
+				"---",
+				"kind: sources",
+				"name: src1",
+				"type: postgres",
+				"connection_string: conn1",
+			},
+		},
+		{
+			name:     "tool without source",
+			toolName: "toolNoSource",
+			wantContains: []string{
+				"kind: tools",
+				"name: toolNoSource",
+				"type: http",
+			},
+		},
+		{
+			name:     "tool with parameters",
+			toolName: "toolWithParams",
+			wantContains: []string{
+				"kind: tools",
+				"name: toolWithParams",
+				"type: custom-tool",
+				"parameters:",
+				"- name: param1",
+				"type: string",
+				"description: desc1",
+			},
+		},
+		{
+			name:     "non-existent tool",
+			toolName: "missing-tool",
+			wantErr:  true,
+		},
+		{
+			name:     "tool with missing source config",
+			toolName: "toolWithMissingSource",
+			wantErr:  true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			gotBytes, err := generateToolConfigYAML(cfg, tt.toolName)
+			if (err != nil) != tt.wantErr {
+				t.Errorf("generateToolConfigYAML() error = %v, wantErr %v", err, tt.wantErr)
+				return
+			}
+			if tt.wantErr {
+				return
+			}
+
+			if tt.wantNil {
+				if gotBytes != nil {
+					t.Errorf("generateToolConfigYAML() expected nil, got %s", string(gotBytes))
+				}
+				return
+			}
+
+			got := string(gotBytes)
+			for _, want := range tt.wantContains {
+				if !strings.Contains(got, want) {
+					t.Errorf("generateToolConfigYAML() result missing expected string: %q\nGot:\n%s", want, got)
+				}
+			}
+		})
+	}
+}

internal/prebuiltconfigs/tools/looker.yaml

@@ -959,6 +959,21 @@ tools:
           Output:
           A confirmation message upon successful file deletion.
 
+    validate_project:
+        kind: looker-validate-project
+        source: looker-source
+        description: |
+          This tool checks a LookML project for syntax errors.
+
+          Prerequisite: The Looker session must be in Development Mode. Use `dev_mode: true` first.
+
+          Parameters:
+          - project_id (required): The unique ID of the LookML project.
+
+          Output:
+          A list of error details including the file path and line number, and also a list of models
+          that are not currently valid due to LookML errors.
+
     get_connections:
         kind: looker-get-connections
         source: looker-source
@@ -1072,6 +1087,7 @@ toolsets:
         - create_project_file
         - update_project_file
         - delete_project_file
+        - validate_project
         - get_connections
         - get_connection_schemas
         - get_connection_databases

internal/server/common_test.go

@@ -24,7 +24,6 @@ import (
 	"testing"
 
 	"github.com/go-chi/chi/v5"
-	"github.com/googleapis/genai-toolbox/internal/embeddingmodels"
 	"github.com/googleapis/genai-toolbox/internal/log"
 	"github.com/googleapis/genai-toolbox/internal/prompts"
 	"github.com/googleapis/genai-toolbox/internal/server/resources"
@@ -41,140 +40,6 @@ var (
 	_ prompts.Prompt = MockPrompt{}
 )
 
-// MockTool is used to mock tools in tests
-type MockTool struct {
-	Name                         string
-	Description                  string
-	Params                       []parameters.Parameter
-	manifest                     tools.Manifest
-	unauthorized                 bool
-	requiresClientAuthrorization bool
-}
-
-func (t MockTool) Invoke(context.Context, tools.SourceProvider, parameters.ParamValues, tools.AccessToken) (any, error) {
-	mock := []any{t.Name}
-	return mock, nil
-}
-
-func (t MockTool) ToConfig() tools.ToolConfig {
-	return nil
-}
-
-// claims is a map of user info decoded from an auth token
-func (t MockTool) ParseParams(data map[string]any, claimsMap map[string]map[string]any) (parameters.ParamValues, error) {
-	return parameters.ParseParams(t.Params, data, claimsMap)
-}
-
-func (t MockTool) EmbedParams(ctx context.Context, paramValues parameters.ParamValues, embeddingModelsMap map[string]embeddingmodels.EmbeddingModel) (parameters.ParamValues, error) {
-	return parameters.EmbedParams(ctx, t.Params, paramValues, embeddingModelsMap, nil)
-}
-
-func (t MockTool) Manifest() tools.Manifest {
-	pMs := make([]parameters.ParameterManifest, 0, len(t.Params))
-	for _, p := range t.Params {
-		pMs = append(pMs, p.Manifest())
-	}
-	return tools.Manifest{Description: t.Description, Parameters: pMs}
-}
-
-func (t MockTool) Authorized(verifiedAuthServices []string) bool {
-	// defaulted to true
-	return !t.unauthorized
-}
-
-func (t MockTool) RequiresClientAuthorization(tools.SourceProvider) (bool, error) {
-	// defaulted to false
-	return t.requiresClientAuthrorization, nil
-}
-
-func (t MockTool) GetParameters() parameters.Parameters {
-	return t.Params
-}
-
-func (t MockTool) McpManifest() tools.McpManifest {
-	properties := make(map[string]parameters.ParameterMcpManifest)
-	required := make([]string, 0)
-	authParams := make(map[string][]string)
-
-	for _, p := range t.Params {
-		name := p.GetName()
-		paramManifest, authParamList := p.McpManifest()
-		properties[name] = paramManifest
-		required = append(required, name)
-
-		if len(authParamList) > 0 {
-			authParams[name] = authParamList
-		}
-	}
-
-	toolsSchema := parameters.McpToolsSchema{
-		Type:       "object",
-		Properties: properties,
-		Required:   required,
-	}
-
-	mcpManifest := tools.McpManifest{
-		Name:        t.Name,
-		Description: t.Description,
-		InputSchema: toolsSchema,
-	}
-
-	if len(authParams) > 0 {
-		mcpManifest.Metadata = map[string]any{
-			"toolbox/authParams": authParams,
-		}
-	}
-
-	return mcpManifest
-}
-
-func (t MockTool) GetAuthTokenHeaderName(tools.SourceProvider) (string, error) {
-	return "Authorization", nil
-}
-
-// MockPrompt is used to mock prompts in tests
-type MockPrompt struct {
-	Name        string
-	Description string
-	Args        prompts.Arguments
-}
-
-func (p MockPrompt) SubstituteParams(vals parameters.ParamValues) (any, error) {
-	return []prompts.Message{
-		{
-			Role:    "user",
-			Content: fmt.Sprintf("substituted %s", p.Name),
-		},
-	}, nil
-}
-
-func (p MockPrompt) ParseArgs(data map[string]any, claimsMap map[string]map[string]any) (parameters.ParamValues, error) {
-	var params parameters.Parameters
-	for _, arg := range p.Args {
-		params = append(params, arg.Parameter)
-	}
-	return parameters.ParseParams(params, data, claimsMap)
-}
-
-func (p MockPrompt) Manifest() prompts.Manifest {
-	var argManifests []parameters.ParameterManifest
-	for _, arg := range p.Args {
-		argManifests = append(argManifests, arg.Manifest())
-	}
-	return prompts.Manifest{
-		Description: p.Description,
-		Arguments:   argManifests,
-	}
-}
-
-func (p MockPrompt) McpManifest() prompts.McpManifest {
-	return prompts.GetMcpManifest(p.Name, p.Description, p.Args)
-}
-
-func (p MockPrompt) ToConfig() prompts.PromptConfig {
-	return nil
-}
-
 var tool1 = MockTool{
 	Name:   "no_params",
 	Params: []parameters.Parameter{},

internal/server/mocks.go

@@ -0,0 +1,159 @@
+// Copyright 2026 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package server
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/googleapis/genai-toolbox/internal/embeddingmodels"
+	"github.com/googleapis/genai-toolbox/internal/prompts"
+	"github.com/googleapis/genai-toolbox/internal/tools"
+	"github.com/googleapis/genai-toolbox/internal/util/parameters"
+)
+
+// MockTool is used to mock tools in tests
+type MockTool struct {
+	Name                         string
+	Description                  string
+	Params                       []parameters.Parameter
+	manifest                     tools.Manifest
+	unauthorized                 bool
+	requiresClientAuthrorization bool
+}
+
+func (t MockTool) Invoke(context.Context, tools.SourceProvider, parameters.ParamValues, tools.AccessToken) (any, error) {
+	mock := []any{t.Name}
+	return mock, nil
+}
+
+func (t MockTool) ToConfig() tools.ToolConfig {
+	return nil
+}
+
+// claims is a map of user info decoded from an auth token
+func (t MockTool) ParseParams(data map[string]any, claimsMap map[string]map[string]any) (parameters.ParamValues, error) {
+	return parameters.ParseParams(t.Params, data, claimsMap)
+}
+
+func (t MockTool) EmbedParams(ctx context.Context, paramValues parameters.ParamValues, embeddingModelsMap map[string]embeddingmodels.EmbeddingModel) (parameters.ParamValues, error) {
+	return parameters.EmbedParams(ctx, t.Params, paramValues, embeddingModelsMap, nil)
+}
+
+func (t MockTool) Manifest() tools.Manifest {
+	pMs := make([]parameters.ParameterManifest, 0, len(t.Params))
+	for _, p := range t.Params {
+		pMs = append(pMs, p.Manifest())
+	}
+	return tools.Manifest{Description: t.Description, Parameters: pMs}
+}
+
+func (t MockTool) Authorized(verifiedAuthServices []string) bool {
+	// defaulted to true
+	return !t.unauthorized
+}
+
+func (t MockTool) RequiresClientAuthorization(tools.SourceProvider) (bool, error) {
+	// defaulted to false
+	return t.requiresClientAuthrorization, nil
+}
+
+func (t MockTool) GetParameters() parameters.Parameters {
+	return t.Params
+}
+
+func (t MockTool) McpManifest() tools.McpManifest {
+	properties := make(map[string]parameters.ParameterMcpManifest)
+	required := make([]string, 0)
+	authParams := make(map[string][]string)
+
+	for _, p := range t.Params {
+		name := p.GetName()
+		paramManifest, authParamList := p.McpManifest()
+		properties[name] = paramManifest
+		required = append(required, name)
+
+		if len(authParamList) > 0 {
+			authParams[name] = authParamList
+		}
+	}
+
+	toolsSchema := parameters.McpToolsSchema{
+		Type:       "object",
+		Properties: properties,
+		Required:   required,
+	}
+
+	mcpManifest := tools.McpManifest{
+		Name:        t.Name,
+		Description: t.Description,
+		InputSchema: toolsSchema,
+	}
+
+	if len(authParams) > 0 {
+		mcpManifest.Metadata = map[string]any{
+			"toolbox/authParams": authParams,
+		}
+	}
+
+	return mcpManifest
+}
+
+func (t MockTool) GetAuthTokenHeaderName(tools.SourceProvider) (string, error) {
+	return "Authorization", nil
+}
+
+// MockPrompt is used to mock prompts in tests
+type MockPrompt struct {
+	Name        string
+	Description string
+	Args        prompts.Arguments
+}
+
+func (p MockPrompt) SubstituteParams(vals parameters.ParamValues) (any, error) {
+	return []prompts.Message{
+		{
+			Role:    "user",
+			Content: fmt.Sprintf("substituted %s", p.Name),
+		},
+	}, nil
+}
+
+func (p MockPrompt) ParseArgs(data map[string]any, claimsMap map[string]map[string]any) (parameters.ParamValues, error) {
+	var params parameters.Parameters
+	for _, arg := range p.Args {
+		params = append(params, arg.Parameter)
+	}
+	return parameters.ParseParams(params, data, claimsMap)
+}
+
+func (p MockPrompt) Manifest() prompts.Manifest {
+	var argManifests []parameters.ParameterManifest
+	for _, arg := range p.Args {
+		argManifests = append(argManifests, arg.Manifest())
+	}
+	return prompts.Manifest{
+		Description: p.Description,
+		Arguments:   argManifests,
+	}
+}
+
+func (p MockPrompt) McpManifest() prompts.McpManifest {
+	return prompts.GetMcpManifest(p.Name, p.Description, p.Args)
+}
+
+func (p MockPrompt) ToConfig() prompts.PromptConfig {
+	return nil
+}

internal/tools/looker/lookervalidateproject/lookervalidateproject.go

@@ -0,0 +1,177 @@
+// Copyright 2026 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+package lookervalidateproject
+
+import (
+	"context"
+	"fmt"
+
+	yaml "github.com/goccy/go-yaml"
+	"github.com/googleapis/genai-toolbox/internal/embeddingmodels"
+	"github.com/googleapis/genai-toolbox/internal/sources"
+	"github.com/googleapis/genai-toolbox/internal/tools"
+	"github.com/googleapis/genai-toolbox/internal/util"
+	"github.com/googleapis/genai-toolbox/internal/util/parameters"
+
+	"github.com/looker-open-source/sdk-codegen/go/rtl"
+	v4 "github.com/looker-open-source/sdk-codegen/go/sdk/v4"
+)
+
+const resourceType string = "looker-validate-project"
+
+func init() {
+	if !tools.Register(resourceType, newConfig) {
+		panic(fmt.Sprintf("tool type %q already registered", resourceType))
+	}
+}
+
+func newConfig(ctx context.Context, name string, decoder *yaml.Decoder) (tools.ToolConfig, error) {
+	actual := Config{Name: name}
+	if err := decoder.DecodeContext(ctx, &actual); err != nil {
+		return nil, err
+	}
+	return actual, nil
+}
+
+type compatibleSource interface {
+	UseClientAuthorization() bool
+	GetAuthTokenHeaderName() string
+	LookerApiSettings() *rtl.ApiSettings
+	GetLookerSDK(string) (*v4.LookerSDK, error)
+}
+
+type Config struct {
+	Name         string                 `yaml:"name" validate:"required"`
+	Type         string                 `yaml:"type" validate:"required"`
+	Source       string                 `yaml:"source" validate:"required"`
+	Description  string                 `yaml:"description" validate:"required"`
+	AuthRequired []string               `yaml:"authRequired"`
+	Annotations  *tools.ToolAnnotations `yaml:"annotations,omitempty"`
+}
+
+// validate interface
+var _ tools.ToolConfig = Config{}
+
+func (cfg Config) ToolConfigType() string {
+	return resourceType
+}
+
+func (cfg Config) Initialize(srcs map[string]sources.Source) (tools.Tool, error) {
+	projectIdParameter := parameters.NewStringParameter("project_id", "The id of the project to validate")
+	params := parameters.Parameters{projectIdParameter}
+
+	annotations := cfg.Annotations
+	if annotations == nil {
+		readOnlyHint := true
+		annotations = &tools.ToolAnnotations{
+			ReadOnlyHint: &readOnlyHint,
+		}
+	}
+
+	mcpManifest := tools.GetMcpManifest(cfg.Name, cfg.Description, cfg.AuthRequired, params, annotations)
+
+	// finish tool setup
+	return Tool{
+		Config:     cfg,
+		Parameters: params,
+		manifest: tools.Manifest{
+			Description:  cfg.Description,
+			Parameters:   params.Manifest(),
+			AuthRequired: cfg.AuthRequired,
+		},
+		mcpManifest: mcpManifest,
+	}, nil
+}
+
+// validate interface
+var _ tools.Tool = Tool{}
+
+type Tool struct {
+	Config
+	Parameters  parameters.Parameters `yaml:"parameters"`
+	manifest    tools.Manifest
+	mcpManifest tools.McpManifest
+}
+
+func (t Tool) ToConfig() tools.ToolConfig {
+	return t.Config
+}
+
+func (t Tool) Invoke(ctx context.Context, resourceMgr tools.SourceProvider, params parameters.ParamValues, accessToken tools.AccessToken) (any, error) {
+	source, err := tools.GetCompatibleSource[compatibleSource](resourceMgr, t.Source, t.Name, t.Type)
+	if err != nil {
+		return nil, err
+	}
+
+	logger, err := util.LoggerFromContext(ctx)
+	if err != nil {
+		return nil, fmt.Errorf("unable to get logger from ctx: %s", err)
+	}
+
+	sdk, err := source.GetLookerSDK(string(accessToken))
+	if err != nil {
+		return nil, fmt.Errorf("error getting sdk: %w", err)
+	}
+
+	mapParams := params.AsMap()
+	projectId, ok := mapParams["project_id"].(string)
+	if !ok {
+		return nil, fmt.Errorf("'project_id' must be a string, got %T", mapParams["project_id"])
+	}
+
+	resp, err := sdk.ValidateProject(projectId, "", source.LookerApiSettings())
+	if err != nil {
+		return nil, fmt.Errorf("error making validate_project request: %w", err)
+	}
+
+	logger.DebugContext(ctx, "Got response of %v\n", resp)
+
+	return resp, nil
+}
+
+func (t Tool) EmbedParams(ctx context.Context, paramValues parameters.ParamValues, embeddingModelsMap map[string]embeddingmodels.EmbeddingModel) (parameters.ParamValues, error) {
+	return parameters.EmbedParams(ctx, t.Parameters, paramValues, embeddingModelsMap, nil)
+}
+
+func (t Tool) Manifest() tools.Manifest {
+	return t.manifest
+}
+
+func (t Tool) McpManifest() tools.McpManifest {
+	return t.mcpManifest
+}
+
+func (t Tool) Authorized(verifiedAuthServices []string) bool {
+	return tools.IsAuthorized(t.AuthRequired, verifiedAuthServices)
+}
+
+func (t Tool) RequiresClientAuthorization(resourceMgr tools.SourceProvider) (bool, error) {
+	source, err := tools.GetCompatibleSource[compatibleSource](resourceMgr, t.Source, t.Name, t.Type)
+	if err != nil {
+		return false, err
+	}
+	return source.UseClientAuthorization(), nil
+}
+
+func (t Tool) GetAuthTokenHeaderName(resourceMgr tools.SourceProvider) (string, error) {
+	source, err := tools.GetCompatibleSource[compatibleSource](resourceMgr, t.Source, t.Name, t.Type)
+	if err != nil {
+		return "", err
+	}
+	return source.GetAuthTokenHeaderName(), nil
+}
+
+func (t Tool) GetParameters() parameters.Parameters {
+	return t.Parameters
+}

internal/tools/looker/lookervalidateproject/lookervalidateproject_test.go

@@ -0,0 +1,109 @@
+// Copyright 2026 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package lookervalidateproject_test
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/google/go-cmp/cmp"
+	"github.com/googleapis/genai-toolbox/internal/server"
+	"github.com/googleapis/genai-toolbox/internal/testutils"
+	lkr "github.com/googleapis/genai-toolbox/internal/tools/looker/lookervalidateproject"
+)
+
+func TestParseFromYamlLookerValidateProject(t *testing.T) {
+	ctx, err := testutils.ContextWithNewLogger()
+	if err != nil {
+		t.Fatalf("unexpected error: %s", err)
+	}
+	tcs := []struct {
+		desc string
+		in   string
+		want server.ToolConfigs
+	}{
+		{
+			desc: "basic example",
+			in: `
+            kind: tools
+            name: example_tool
+            type: looker-validate-project
+            source: my-instance
+            description: some description
+				`,
+			want: server.ToolConfigs{
+				"example_tool": lkr.Config{
+					Name:         "example_tool",
+					Type:         "looker-validate-project",
+					Source:       "my-instance",
+					Description:  "some description",
+					AuthRequired: []string{},
+				},
+			},
+		},
+	}
+	for _, tc := range tcs {
+		t.Run(tc.desc, func(t *testing.T) {
+			// Parse contents
+			_, _, _, got, _, _, err := server.UnmarshalResourceConfig(ctx, testutils.FormatYaml(tc.in))
+			if err != nil {
+				t.Fatalf("unable to unmarshal: %s", err)
+			}
+			if diff := cmp.Diff(tc.want, got); diff != "" {
+				t.Fatalf("incorrect parse: diff %v", diff)
+			}
+		})
+	}
+
+}
+
+func TestFailParseFromYamlLookerValidateProject(t *testing.T) {
+	ctx, err := testutils.ContextWithNewLogger()
+	if err != nil {
+		t.Fatalf("unexpected error: %s", err)
+	}
+	tcs := []struct {
+		desc string
+		in   string
+		err  string
+	}{
+		{
+			desc: "Invalid method",
+			in: `
+            kind: tools
+            name: example_tool
+            type: looker-validate-project
+            source: my-instance
+            method: GOT
+            description: some description
+			`,
+			err: "error unmarshaling tools: unable to parse tool \"example_tool\" as type \"looker-validate-project\": [3:1] unknown field \"method\"\n   1 | authRequired: []\n   2 | description: some description\n>  3 | method: GOT\n       ^\n   4 | name: example_tool\n   5 | source: my-instance\n   6 | type: looker-validate-project",
+		},
+	}
+	for _, tc := range tcs {
+		t.Run(tc.desc, func(t *testing.T) {
+			// Parse contents
+			_, _, _, _, _, _, err := server.UnmarshalResourceConfig(ctx, testutils.FormatYaml(tc.in))
+			if err == nil {
+				t.Fatalf("expect parsing to fail")
+			}
+			errStr := err.Error()
+			if !strings.Contains(errStr, tc.err) {
+				t.Fatalf("unexpected error string: got %q, want substring %q", errStr, tc.err)
+			}
+		})
+	}
+
+}

tests/looker/looker_integration_test.go

@@ -222,6 +222,11 @@ func TestLooker(t *testing.T) {
 				"source":      "my-instance",
 				"description": "Simple tool to test end to end functionality.",
 			},
+			"validate_project": map[string]any{
+				"type":        "looker-validate-project",
+				"source":      "my-instance",
+				"description": "Simple tool to test end to end functionality.",
+			},
 			"generate_embed_url": map[string]any{
 				"type":        "looker-generate-embed-url",
 				"source":      "my-instance",
@@ -1446,6 +1451,23 @@ func TestLooker(t *testing.T) {
 			},
 		},
 	)
+	tests.RunToolGetTestByName(t, "validate_project",
+		map[string]any{
+			"validate_project": map[string]any{
+				"description":  "Simple tool to test end to end functionality.",
+				"authRequired": []any{},
+				"parameters": []any{
+					map[string]any{
+						"authSources": []any{},
+						"description": "The id of the project to validate",
+						"name":        "project_id",
+						"required":    true,
+						"type":        "string",
+					},
+				},
+			},
+		},
+	)
 	tests.RunToolGetTestByName(t, "generate_embed_url",
 		map[string]any{
 			"generate_embed_url": map[string]any{
@@ -1665,6 +1687,9 @@ func TestLooker(t *testing.T) {
 	wantResult = "deleted"
 	tests.RunToolInvokeParametersTest(t, "delete_project_file", []byte(`{"project_id": "the_look", "file_path": "foo.view.lkml"}`), wantResult)
 
+	wantResult = "\"errors\":[]"
+	tests.RunToolInvokeParametersTest(t, "validate_project", []byte(`{"project_id": "the_look"}`), wantResult)
+
 	wantResult = "production"
 	tests.RunToolInvokeParametersTest(t, "dev_mode", []byte(`{"devMode": false}`), wantResult)