chore(release): Update version to v1.4.375

feat(vertexai): add dynamic model listing and multi-model support

.github/workflows/update-version-and-create-tag.yml

@@ -94,7 +94,6 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
           go run ./cmd/generate_changelog --process-prs ${{ steps.increment_version.outputs.new_tag }}
-          go run ./cmd/generate_changelog --sync-db
           git add ./cmd/generate_changelog/changelog.db
       - name: Commit changes
         run: |

CHANGELOG.md

@@ -1,5 +1,71 @@
 # Changelog
 
+## v1.4.375 (2026-01-08)
+
+### PR [#1925](https://github.com/danielmiessler/Fabric/pull/1925) by [ksylvan](https://github.com/ksylvan): docs: update README to document new AI providers and features
+
+- Docs: update README to document new AI providers and features
+- List supported native and OpenAI-compatible AI provider integrations
+- Document dry run mode for previewing prompt construction
+- Explain Ollama compatibility mode for exposing API endpoints
+- Detail available prompt strategies like chain-of-thought and reflexion
+
+### PR [#1926](https://github.com/danielmiessler/Fabric/pull/1926) by [henricook](https://github.com/henricook) and [ksylvan](https://github.com/ksylvan): feat(vertexai): add dynamic model listing and multi-model support
+
+- Dynamic model listing from Vertex AI Model Garden API
+- Support for both Gemini (genai SDK) and Claude (Anthropic SDK) models
+- Curated Gemini model list with web search support for Gemini models
+- Thinking/extended thinking support for Gemini
+- TopP parameter support for Claude models
+
+## v1.4.374 (2026-01-05)
+
+### PR [#1924](https://github.com/danielmiessler/Fabric/pull/1924) by [ksylvan](https://github.com/ksylvan): Rename `code_helper` to `code2context` across documentation and CLI
+
+- Rename `code_helper` command to `code2context` throughout codebase
+- Update README.md table of contents and references
+- Update installation instructions with new binary name
+- Update all usage examples in main.go help text
+- Update create_coding_feature pattern documentation
+
+## v1.4.373 (2026-01-04)
+
+### PR [#1914](https://github.com/danielmiessler/Fabric/pull/1914) by [majiayu000](https://github.com/majiayu000): feat(code_helper): add stdin support for piping file lists
+
+- Added stdin support for piping file lists to code_helper, enabling commands like `find . -name '*.go' | code_helper "instructions"` and `git ls-files '*.py' | code_helper "Add type hints"`
+- Implemented automatic detection of stdin pipe mode with single argument (instructions) support
+- Enhanced tool to read file paths from stdin line by line while maintaining backward compatibility with existing directory scanning functionality
+
+### PR [#1915](https://github.com/danielmiessler/Fabric/pull/1915) by [majiayu000](https://github.com/majiayu000): feat: parallelize audio chunk transcription for improved performance
+
+- Parallelize audio chunk transcription using goroutines for improved performance
+
+## v1.4.372 (2026-01-04)
+
+### PR [#1913](https://github.com/danielmiessler/Fabric/pull/1913) by [majiayu000](https://github.com/majiayu000): fix: REST API /chat endpoint doesn't pass 'search' parameter to ChatOptions
+
+- Fix: REST API /chat endpoint now properly passes Search and SearchLocation parameters to ChatOptions
+
+## v1.4.371 (2026-01-04)
+
+### PR [#1923](https://github.com/danielmiessler/Fabric/pull/1923) by [ksylvan](https://github.com/ksylvan): ChangeLog Generation stability
+
+- Fix: improve date parsing and prevent early return when PR numbers exist
+- Add SQLite datetime formats to version date parsing logic
+- Loop through multiple date formats until one succeeds
+- Include SQLite fractional seconds format support
+- Prevent early return when version has PR numbers to output
+
+## v1.4.370 (2026-01-04)
+
+### PR [#1921](https://github.com/danielmiessler/Fabric/pull/1921) by [ksylvan](https://github.com/ksylvan): chore: remove redundant `--sync-db` step from changelog workflow
+
+- Remove redundant `--sync-db` step from changelog workflow
+- Remove duplicate database sync command from version workflow
+- Simplify changelog generation to single process-prs step
+- Clean up `heal_person` pattern by removing duplicate content sections
+- Remove duplicate IDENTITY, PURPOSE, STEPS, and OUTPUT INSTRUCTIONS from pattern file
+
 ## v1.4.369 (2026-01-04)
 
 ### PR [#1919](https://github.com/danielmiessler/Fabric/pull/1919) by [ksylvan](https://github.com/ksylvan): Fix the `last_pr_sync` setting during PR incoming processing

README.md

@@ -160,6 +160,7 @@ Keep in mind that many of these were recorded when Fabric was Python-based, so r
     - [Docker](#docker)
     - [Environment Variables](#environment-variables)
     - [Setup](#setup)
+    - [Supported AI Providers](#supported-ai-providers)
     - [Per-Pattern Model Mapping](#per-pattern-model-mapping)
     - [Add aliases for all patterns](#add-aliases-for-all-patterns)
       - [Save your files in markdown using aliases](#save-your-files-in-markdown-using-aliases)
@@ -172,12 +173,15 @@ Keep in mind that many of these were recorded when Fabric was Python-based, so r
       - [Fish Completion](#fish-completion)
   - [Usage](#usage)
     - [Debug Levels](#debug-levels)
+    - [Dry Run Mode](#dry-run-mode)
     - [Extensions](#extensions)
   - [REST API Server](#rest-api-server)
+    - [Ollama Compatibility Mode](#ollama-compatibility-mode)
   - [Our approach to prompting](#our-approach-to-prompting)
   - [Examples](#examples)
   - [Just use the Patterns](#just-use-the-patterns)
     - [Prompt Strategies](#prompt-strategies)
+      - [Available Strategies](#available-strategies)
   - [Custom Patterns](#custom-patterns)
     - [Setting Up Custom Patterns](#setting-up-custom-patterns)
     - [Using Custom Patterns](#using-custom-patterns)
@@ -185,7 +189,8 @@ Keep in mind that many of these were recorded when Fabric was Python-based, so r
   - [Helper Apps](#helper-apps)
     - [`to_pdf`](#to_pdf)
     - [`to_pdf` Installation](#to_pdf-installation)
-    - [`code_helper`](#code_helper)
+    - [`code2context`](#code2context)
+    - [`generate_changelog`](#generate_changelog)
   - [pbpaste](#pbpaste)
   - [Web Interface (Fabric Web App)](#web-interface-fabric-web-app)
   - [Meta](#meta)
@@ -349,6 +354,43 @@ fabric --setup
 
 If everything works you are good to go.
 
+### Supported AI Providers
+
+Fabric supports a wide range of AI providers:
+
+**Native Integrations:**
+
+- OpenAI
+- Anthropic (Claude)
+- Google Gemini
+- Ollama (local models)
+- Azure OpenAI
+- Amazon Bedrock
+- Vertex AI
+- LM Studio
+- Perplexity
+
+**OpenAI-Compatible Providers:**
+
+- Abacus
+- AIML
+- Cerebras
+- DeepSeek
+- GitHub Models
+- GrokAI
+- Groq
+- Langdock
+- LiteLLM
+- MiniMax
+- Mistral
+- OpenRouter
+- SiliconCloud
+- Together
+- Venice AI
+- Z AI
+
+Run `fabric --setup` to configure your preferred provider(s), or use `fabric --listvendors` to see all available vendors.
+
 ### Per-Pattern Model Mapping
 
  You can configure specific models for individual patterns using environment variables
@@ -720,6 +762,16 @@ Use the `--debug` flag to control runtime logging:
 - `2`: detailed debugging
 - `3`: trace level
 
+### Dry Run Mode
+
+Use `--dry-run` to preview what would be sent to the AI model without making an API call:
+
+```bash
+echo "test input" | fabric --dry-run -p summarize
+```
+
+This is useful for debugging patterns, checking prompt construction, and verifying input formatting before using API credits.
+
 ### Extensions
 
 Fabric supports extensions that can be called within patterns. See the [Extension Guide](internal/plugins/template/Examples/README.md) for complete documentation.
@@ -745,6 +797,22 @@ The server provides endpoints for:
 
 For complete endpoint documentation, authentication setup, and usage examples, see [REST API Documentation](docs/rest-api.md).
 
+### Ollama Compatibility Mode
+
+Fabric can serve as a drop-in replacement for Ollama by exposing Ollama-compatible API endpoints. Start the server with:
+
+```bash
+fabric --serve --serveOllama
+```
+
+This enables the following Ollama-compatible endpoints:
+
+- `GET /api/tags` - List available patterns as models
+- `POST /api/chat` - Chat completions
+- `GET /api/version` - Server version
+
+Applications configured to use the Ollama API can point to your Fabric server instead, allowing you to use any of Fabric's supported AI providers through the Ollama interface. Patterns appear as models (e.g., `summarize:latest`).
+
 ## Our approach to prompting
 
 Fabric _Patterns_ are different than most prompts you'll see.
@@ -825,6 +893,34 @@ LLM in the chat session.
 
 Use `fabric -S` and select the option to install the strategies in your `~/.config/fabric` directory.
 
+#### Available Strategies
+
+Fabric includes several prompt strategies:
+
+- `cot` - Chain-of-Thought: Step-by-step reasoning
+- `cod` - Chain-of-Draft: Iterative drafting with minimal notes (5 words max per step)
+- `tot` - Tree-of-Thought: Generate multiple reasoning paths and select the best one
+- `aot` - Atom-of-Thought: Break problems into smallest independent atomic sub-problems
+- `ltm` - Least-to-Most: Solve problems from easiest to hardest sub-problems
+- `self-consistent` - Self-Consistency: Multiple reasoning paths with consensus
+- `self-refine` - Self-Refinement: Answer, critique, and refine
+- `reflexion` - Reflexion: Answer, critique briefly, and provide refined answer
+- `standard` - Standard: Direct answer without explanation
+
+Use the `--strategy` flag to apply a strategy:
+
+```bash
+echo "Analyze this code" | fabric --strategy cot -p analyze_code
+```
+
+List all available strategies with:
+
+```bash
+fabric --liststrategies
+```
+
+Strategies are stored as JSON files in `~/.config/fabric/strategies/`. See the default strategies for the format specification.
+
 ## Custom Patterns
 
 You may want to use Fabric to create your own custom Patterns—but not share them with others. No problem!
@@ -904,9 +1000,9 @@ go install github.com/danielmiessler/fabric/cmd/to_pdf@latest
 
 Make sure you have a LaTeX distribution (like TeX Live or MiKTeX) installed on your system, as `to_pdf` requires `pdflatex` to be available in your system's PATH.
 
-### `code_helper`
+### `code2context`
 
-`code_helper` is used in conjunction with the `create_coding_feature` pattern.
+`code2context` is used in conjunction with the `create_coding_feature` pattern.
 It generates a `json` representation of a directory of code that can be fed into an AI model
 with instructions to create a new feature or edit the code in a specified way.
 
@@ -915,9 +1011,27 @@ See [the Create Coding Feature Pattern README](./data/patterns/create_coding_fea
 Install it first using:
 
 ```bash
-go install github.com/danielmiessler/fabric/cmd/code_helper@latest
+go install github.com/danielmiessler/fabric/cmd/code2context@latest
 ```
 
+### `generate_changelog`
+
+`generate_changelog` generates changelogs from git commit history and GitHub pull requests. It walks through your repository's git history, extracts PR information, and produces well-formatted markdown changelogs.
+
+```bash
+generate_changelog --help
+```
+
+Features include SQLite caching for fast incremental updates, GitHub GraphQL API integration for efficient PR fetching, and optional AI-enhanced summaries using Fabric.
+
+Install it using:
+
+```bash
+go install github.com/danielmiessler/fabric/cmd/generate_changelog@latest
+```
+
+See the [generate_changelog README](./cmd/generate_changelog/README.md) for detailed usage and options.
+
 ## pbpaste
 
 The [examples](#examples) use the macOS program `pbpaste` to paste content from the clipboard to pipe into `fabric` as the input. `pbpaste` is not available on Windows or Linux, but there are alternatives.

cmd/code2context/code.go

@@ -131,6 +131,75 @@ func ScanDirectory(rootDir string, maxDepth int, instructions string, ignoreList
 	return json.MarshalIndent(data, "", "  ")
 }
 
+// ScanFiles scans specific files and returns a JSON representation
+func ScanFiles(files []string, instructions string) ([]byte, error) {
+	fileCount := 0
+	dirSet := make(map[string]bool)
+
+	// Create root directory item
+	rootItem := FileItem{
+		Type:     "directory",
+		Name:     ".",
+		Contents: []FileItem{},
+	}
+
+	for _, filePath := range files {
+		// Skip directories
+		info, err := os.Stat(filePath)
+		if err != nil {
+			return nil, fmt.Errorf("error accessing file %s: %v", filePath, err)
+		}
+		if info.IsDir() {
+			continue
+		}
+
+		// Track unique directories
+		dir := filepath.Dir(filePath)
+		if dir != "." {
+			dirSet[dir] = true
+		}
+
+		fileCount++
+
+		// Read file content
+		content, err := os.ReadFile(filePath)
+		if err != nil {
+			return nil, fmt.Errorf("error reading file %s: %v", filePath, err)
+		}
+
+		// Clean path for consistent handling
+		cleanPath := filepath.Clean(filePath)
+		if strings.HasPrefix(cleanPath, "./") {
+			cleanPath = cleanPath[2:]
+		}
+
+		// Add file to the structure
+		addFileToDirectory(&rootItem, cleanPath, string(content), ".")
+	}
+
+	// Create final data structure
+	var data []any
+	data = append(data, rootItem)
+
+	// Add report
+	reportItem := map[string]any{
+		"type":        "report",
+		"directories": len(dirSet) + 1,
+		"files":       fileCount,
+	}
+	data = append(data, reportItem)
+
+	// Add instructions
+	instructionsItem := map[string]any{
+		"type":    "instructions",
+		"name":    "code_change_instructions",
+		"details": instructions,
+	}
+	data = append(data, instructionsItem)
+
+	return json.MarshalIndent(data, "", "  ")
+}
+
 // addFileToDirectory adds a file to the correct directory in the structure
 func addFileToDirectory(root *FileItem, path, content, rootDir string) {
 	parts := strings.Split(path, string(filepath.Separator))

cmd/code2context/code_test.go

@@ -0,0 +1,100 @@
+package main
+
+import (
+	"encoding/json"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestScanFiles(t *testing.T) {
+	// Create temp directory with test files
+	tmpDir := t.TempDir()
+
+	// Create test files
+	file1 := filepath.Join(tmpDir, "test1.go")
+	file2 := filepath.Join(tmpDir, "test2.go")
+	subDir := filepath.Join(tmpDir, "subdir")
+	file3 := filepath.Join(subDir, "test3.go")
+
+	require.NoError(t, os.WriteFile(file1, []byte("package main\n"), 0644))
+	require.NoError(t, os.WriteFile(file2, []byte("package main\n\nfunc main() {}\n"), 0644))
+	require.NoError(t, os.MkdirAll(subDir, 0755))
+	require.NoError(t, os.WriteFile(file3, []byte("package subdir\n"), 0644))
+
+	// Test scanning specific files
+	files := []string{file1, file3}
+	instructions := "Test instructions"
+
+	jsonData, err := ScanFiles(files, instructions)
+	require.NoError(t, err)
+
+	// Parse the JSON output
+	var result []any
+	err = json.Unmarshal(jsonData, &result)
+	require.NoError(t, err)
+	assert.Len(t, result, 3) // directory, report, instructions
+
+	// Check report
+	report := result[1].(map[string]any)
+	assert.Equal(t, "report", report["type"])
+	assert.Equal(t, float64(2), report["files"])
+
+	// Check instructions
+	instr := result[2].(map[string]any)
+	assert.Equal(t, "instructions", instr["type"])
+	assert.Equal(t, "Test instructions", instr["details"])
+}
+
+func TestScanFilesSkipsDirectories(t *testing.T) {
+	tmpDir := t.TempDir()
+
+	file1 := filepath.Join(tmpDir, "test.go")
+	subDir := filepath.Join(tmpDir, "subdir")
+
+	require.NoError(t, os.WriteFile(file1, []byte("package main\n"), 0644))
+	require.NoError(t, os.MkdirAll(subDir, 0755))
+
+	// Include a directory in the file list - should be skipped
+	files := []string{file1, subDir}
+
+	jsonData, err := ScanFiles(files, "test")
+	require.NoError(t, err)
+
+	var result []any
+	err = json.Unmarshal(jsonData, &result)
+	require.NoError(t, err)
+
+	// Check that only 1 file was counted (directory was skipped)
+	report := result[1].(map[string]any)
+	assert.Equal(t, float64(1), report["files"])
+}
+
+func TestScanFilesNonExistentFile(t *testing.T) {
+	files := []string{"/nonexistent/file.go"}
+	_, err := ScanFiles(files, "test")
+	assert.Error(t, err)
+	assert.Contains(t, err.Error(), "error accessing file")
+}
+
+func TestScanDirectory(t *testing.T) {
+	tmpDir := t.TempDir()
+
+	file1 := filepath.Join(tmpDir, "main.go")
+	require.NoError(t, os.WriteFile(file1, []byte("package main\n"), 0644))
+
+	jsonData, err := ScanDirectory(tmpDir, 3, "Test instructions", []string{})
+	require.NoError(t, err)
+
+	var result []any
+	err = json.Unmarshal(jsonData, &result)
+	require.NoError(t, err)
+	assert.Len(t, result, 3)
+
+	// Check instructions
+	instr := result[2].(map[string]any)
+	assert.Equal(t, "Test instructions", instr["details"])
+}

cmd/code2context/main.go

@@ -0,0 +1,109 @@
+package main
+
+import (
+	"bufio"
+	"flag"
+	"fmt"
+	"os"
+	"strings"
+)
+
+func main() {
+	// Command line flags
+	maxDepth := flag.Int("depth", 3, "Maximum directory depth to scan")
+	ignorePatterns := flag.String("ignore", ".git,node_modules,vendor", "Comma-separated patterns to ignore")
+	outputFile := flag.String("out", "", "Output file (default: stdout)")
+	flag.Usage = printUsage
+	flag.Parse()
+
+	// Check if stdin has data (is a pipe)
+	stdinInfo, _ := os.Stdin.Stat()
+	hasStdin := (stdinInfo.Mode() & os.ModeCharDevice) == 0
+
+	var jsonData []byte
+	var err error
+
+	if hasStdin {
+		// Stdin mode: read file list from stdin, instructions from argument
+		if flag.NArg() != 1 {
+			fmt.Fprintf(os.Stderr, "Error: When piping file list via stdin, provide exactly 1 argument: <instructions>\n")
+			fmt.Fprintf(os.Stderr, "Usage: find . -name '*.go' | code2context \"instructions\"\n")
+			os.Exit(1)
+		}
+
+		instructions := flag.Arg(0)
+
+		// Read file paths from stdin
+		var files []string
+		scanner := bufio.NewScanner(os.Stdin)
+		for scanner.Scan() {
+			line := strings.TrimSpace(scanner.Text())
+			if line != "" {
+				files = append(files, line)
+			}
+		}
+		if err := scanner.Err(); err != nil {
+			fmt.Fprintf(os.Stderr, "Error reading stdin: %v\n", err)
+			os.Exit(1)
+		}
+
+		if len(files) == 0 {
+			fmt.Fprintf(os.Stderr, "Error: No files provided via stdin\n")
+			os.Exit(1)
+		}
+
+		jsonData, err = ScanFiles(files, instructions)
+	} else {
+		// Directory mode: require directory and instructions arguments
+		if flag.NArg() != 2 {
+			printUsage()
+			os.Exit(1)
+		}
+
+		directory := flag.Arg(0)
+		instructions := flag.Arg(1)
+
+		// Validate directory
+		if info, err := os.Stat(directory); err != nil || !info.IsDir() {
+			fmt.Fprintf(os.Stderr, "Error: Directory '%s' does not exist or is not a directory\n", directory)
+			os.Exit(1)
+		}
+
+		// Parse ignore patterns and scan directory
+		jsonData, err = ScanDirectory(directory, *maxDepth, instructions, strings.Split(*ignorePatterns, ","))
+	}
+
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Error scanning: %v\n", err)
+		os.Exit(1)
+	}
+
+	// Output result
+	if *outputFile != "" {
+		if err := os.WriteFile(*outputFile, jsonData, 0644); err != nil {
+			fmt.Fprintf(os.Stderr, "Error writing file: %v\n", err)
+			os.Exit(1)
+		}
+	} else {
+		fmt.Print(string(jsonData))
+	}
+}
+
+func printUsage() {
+	fmt.Fprintf(os.Stderr, `code2context - Code project scanner for use with Fabric AI
+
+Usage:
+  code2context [options] <directory> <instructions>
+  <file_list> | code2context [options] <instructions>
+
+Examples:
+  code2context . "Add input validation to all user inputs"
+  code2context -depth 4 ./my-project "Implement error handling"
+  code2context -out project.json ./src "Fix security issues"
+  find . -name '*.go' | code2context "Refactor error handling"
+  git ls-files '*.py' | code2context "Add type hints"
+
+Options:
+`)
+	flag.PrintDefaults()
+}

cmd/code_helper/main.go

@@ -1,65 +0,0 @@
-package main
-
-import (
-	"flag"
-	"fmt"
-	"os"
-	"strings"
-)
-
-func main() {
-	// Command line flags
-	maxDepth := flag.Int("depth", 3, "Maximum directory depth to scan")
-	ignorePatterns := flag.String("ignore", ".git,node_modules,vendor", "Comma-separated patterns to ignore")
-	outputFile := flag.String("out", "", "Output file (default: stdout)")
-	flag.Usage = printUsage
-	flag.Parse()
-
-	// Require exactly two positional arguments: directory and instructions
-	if flag.NArg() != 2 {
-		printUsage()
-		os.Exit(1)
-	}
-
-	directory := flag.Arg(0)
-	instructions := flag.Arg(1)
-
-	// Validate directory
-	if info, err := os.Stat(directory); err != nil || !info.IsDir() {
-		fmt.Fprintf(os.Stderr, "Error: Directory '%s' does not exist or is not a directory\n", directory)
-		os.Exit(1)
-	}
-
-	// Parse ignore patterns and scan directory
-	jsonData, err := ScanDirectory(directory, *maxDepth, instructions, strings.Split(*ignorePatterns, ","))
-	if err != nil {
-		fmt.Fprintf(os.Stderr, "Error scanning directory: %v\n", err)
-		os.Exit(1)
-	}
-
-	// Output result
-	if *outputFile != "" {
-		if err := os.WriteFile(*outputFile, jsonData, 0644); err != nil {
-			fmt.Fprintf(os.Stderr, "Error writing file: %v\n", err)
-			os.Exit(1)
-		}
-	} else {
-		fmt.Print(string(jsonData))
-	}
-}
-
-func printUsage() {
-	fmt.Fprintf(os.Stderr, `code_helper - Code project scanner for use with Fabric AI
-
-Usage:
-  code_helper [options] <directory> <instructions>
-
-Examples:
-  code_helper . "Add input validation to all user inputs"
-  code_helper -depth 4 ./my-project "Implement error handling"
-  code_helper -out project.json ./src "Fix security issues"
-
-Options:
-`)
-	flag.PrintDefaults()
-}

cmd/fabric/version.go

@@ -1,3 +1,3 @@
 package main
 
-var version = "v1.4.369"
+var version = "v1.4.375"

cmd/generate_changelog/internal/cache/cache.go

@@ -202,14 +202,23 @@ func (c *Cache) GetVersions() (map[string]*git.Version, error) {
 		}
 
 		if dateStr.Valid {
-			// Try RFC3339Nano first (for nanosecond precision), then fall back to RFC3339
-			v.Date, err = time.Parse(time.RFC3339Nano, dateStr.String)
-			if err != nil {
-				v.Date, err = time.Parse(time.RFC3339, dateStr.String)
-				if err != nil {
-					fmt.Fprintf(os.Stderr, "Error parsing date '%s' for version '%s': %v. Expected format: RFC3339 or RFC3339Nano.\n", dateStr.String, v.Name, err)
+			// Try multiple date formats: SQLite format, RFC3339Nano, and RFC3339
+			dateFormats := []string{
+				"2006-01-02 15:04:05-07:00",           // SQLite DATETIME format
+				"2006-01-02 15:04:05.999999999-07:00", // SQLite with fractional seconds
+				time.RFC3339Nano,
+				time.RFC3339,
+			}
+			var parseErr error
+			for _, format := range dateFormats {
+				v.Date, parseErr = time.Parse(format, dateStr.String)
+				if parseErr == nil {
+					break // Successfully parsed
 				}
 			}
+			if parseErr != nil {
+				fmt.Fprintf(os.Stderr, "Error parsing date '%s' for version '%s': %v\n", dateStr.String, v.Name, parseErr)
+			}
 		}
 
 		if prNumbersJSON != "" {

cmd/generate_changelog/internal/changelog/generator.go

@@ -470,7 +470,8 @@ func (g *Generator) generateRawVersionContent(version *git.Version) string {
 	}
 
 	// There are occasionally no PRs or direct commits other than version bumps, so we handle that gracefully
-	if len(prCommits) == 0 && len(directCommits) == 0 {
+	// However, don't return early if we have PRs to output from version.PRNumbers
+	if len(prCommits) == 0 && len(directCommits) == 0 && len(version.PRNumbers) == 0 {
 		return ""
 	}
 

data/patterns/create_coding_feature/README.md

@@ -4,10 +4,10 @@ Generate code changes to an existing coding project using AI.
 
 ## Installation
 
-After installing the `code_helper` binary:
+After installing the `code2context` binary:
 
 ```bash
-go install github.com/danielmiessler/fabric/cmd/code_helper@latest
+go install github.com/danielmiessler/fabric/cmd/code2context@latest
 ```
 
 ## Usage
@@ -15,18 +15,18 @@ go install github.com/danielmiessler/fabric/cmd/code_helper@latest
 The create_coding_feature allows you to apply AI-suggested code changes directly to your project files. Use it like this:
 
 ```bash
-code_helper [project_directory] "[instructions for code changes]" | fabric --pattern create_coding_feature
+code2context [project_directory] "[instructions for code changes]" | fabric --pattern create_coding_feature
 ```
 
 For example:
 
 ```bash
-code_helper . "Create a simple Hello World C program in file main.c" | fabric --pattern create_coding_feature
+code2context . "Create a simple Hello World C program in file main.c" | fabric --pattern create_coding_feature
 ```
 
 ## How It Works
 
-1. `code_helper` scans your project directory and creates a JSON representation
+1. `code2context` scans your project directory and creates a JSON representation
 2. The AI model analyzes your project structure and instructions
 3. AI generates file changes in a standard format
 4. Fabric parses these changes and prompts you to confirm
@@ -36,7 +36,7 @@ code_helper . "Create a simple Hello World C program in file main.c" | fabric --
 
 ```bash
 # Request AI to create a Hello World program
-code_helper . "Create a simple Hello World C program in file main.c" | fabric --pattern create_coding_feature
+code2context . "Create a simple Hello World C program in file main.c" | fabric --pattern create_coding_feature
 
 # Review the changes made to your project
 git diff
@@ -52,7 +52,7 @@ git commit -s -m "Add Hello World program"
 ### Security Enhancement Example
 
 ```bash
-code_helper . "Ensure that all user input is validated and sanitized before being used in the program." | fabric --pattern create_coding_feature
+code2context . "Ensure that all user input is validated and sanitized before being used in the program." | fabric --pattern create_coding_feature
 git diff
 make check
 git add <changed files>

data/patterns/heal_person/system.md

@@ -24,30 +24,4 @@ Take a step back and think step-by-step about how to achieve the best possible r
 
 # INPUT
 
-INPUT:# IDENTITY and PURPOSE
-
-You are an AI assistant whose primary responsibility is to interpret and analyze psychological profiles and/or psychology data files provided as input. Your role is to carefully process this data and use your expertise to develop a tailored plan aimed at spiritual and mental healing, as well as overall life improvement for the subject. You must approach each case with sensitivity, applying psychological knowledge and holistic strategies to create actionable, personalized recommendations that address both mental and spiritual well-being. Your focus is on structured, compassionate, and practical guidance that can help the individual make meaningful improvements in their life.
-
-Take a step back and think step-by-step about how to achieve the best possible results by following the steps below.
-
-# STEPS
-
-- Carefully review the psychological-profile and/or psychology data file provided as input.
-
-- Analyze the data to identify key issues, strengths, and areas needing improvement related to the subject's mental and spiritual well-being.
-
-- Develop a comprehensive plan that includes specific strategies for spiritual healing, mental health improvement, and overall life enhancement.
-
-- Structure your output to clearly outline recommendations, resources, and actionable steps tailored to the individual's unique profile.
-
-# OUTPUT INSTRUCTIONS
-
-- Only output Markdown.
-
-- Ensure your output is organized, clear, and easy to follow, using headings, subheadings, and bullet points where appropriate.
-
-- Ensure you follow ALL these instructions when creating your output.
-
-# INPUT
-
-INPUT:
+INPUT

internal/plugins/ai/gemini/gemini.go

@@ -10,9 +10,9 @@ import (
 	"strings"
 
 	"github.com/danielmiessler/fabric/internal/chat"
-	"github.com/danielmiessler/fabric/internal/plugins"
-
 	"github.com/danielmiessler/fabric/internal/domain"
+	"github.com/danielmiessler/fabric/internal/plugins"
+	"github.com/danielmiessler/fabric/internal/plugins/ai/geminicommon"
 	"google.golang.org/genai"
 )
 
@@ -29,10 +29,6 @@ const (
 )
 
 const (
-	citationHeader    = "\n\n## Sources\n\n"
-	citationSeparator = "\n"
-	citationFormat    = "- [%s](%s)"
-
 	errInvalidLocationFormat = "invalid search location format %q: must be timezone (e.g., 'America/Los_Angeles') or language code (e.g., 'en-US')"
 	locationSeparator        = "/"
 	langCodeSeparator        = "_"
@@ -111,7 +107,7 @@ func (o *Client) Send(ctx context.Context, msgs []*chat.ChatCompletionMessage, o
 	}
 
 	// Convert messages to new SDK format
-	contents := o.convertMessages(msgs)
+	contents := geminicommon.ConvertMessages(msgs)
 
 	cfg, err := o.buildGenerateContentConfig(opts)
 	if err != nil {
@@ -125,7 +121,7 @@ func (o *Client) Send(ctx context.Context, msgs []*chat.ChatCompletionMessage, o
 	}
 
 	// Extract text from response
-	ret = o.extractTextFromResponse(response)
+	ret = geminicommon.ExtractTextWithCitations(response)
 	return
 }
 
@@ -142,7 +138,7 @@ func (o *Client) SendStream(msgs []*chat.ChatCompletionMessage, opts *domain.Cha
 	}
 
 	// Convert messages to new SDK format
-	contents := o.convertMessages(msgs)
+	contents := geminicommon.ConvertMessages(msgs)
 
 	cfg, err := o.buildGenerateContentConfig(opts)
 	if err != nil {
@@ -161,7 +157,7 @@ func (o *Client) SendStream(msgs []*chat.ChatCompletionMessage, opts *domain.Cha
 			return err
 		}
 
-		text := o.extractTextFromResponse(response)
+		text := geminicommon.ExtractTextWithCitations(response)
 		if text != "" {
 			channel <- domain.StreamUpdate{
 				Type:    domain.StreamTypeContent,
@@ -218,10 +214,14 @@ func parseThinkingConfig(level domain.ThinkingLevel) (*genai.ThinkingConfig, boo
 func (o *Client) buildGenerateContentConfig(opts *domain.ChatOptions) (*genai.GenerateContentConfig, error) {
 	temperature := float32(opts.Temperature)
 	topP := float32(opts.TopP)
+	var maxTokens int32
+	if opts.MaxTokens > 0 {
+		maxTokens = int32(opts.MaxTokens)
+	}
 	cfg := &genai.GenerateContentConfig{
 		Temperature:     &temperature,
 		TopP:            &topP,
-		MaxOutputTokens: int32(opts.ModelContextLength),
+		MaxOutputTokens: maxTokens,
 	}
 
 	if opts.Search {
@@ -452,113 +452,3 @@ func (o *Client) generateWAVFile(pcmData []byte) ([]byte, error) {
 
 	return result, nil
 }
-
-// convertMessages converts fabric chat messages to genai Content format
-func (o *Client) convertMessages(msgs []*chat.ChatCompletionMessage) []*genai.Content {
-	var contents []*genai.Content
-
-	for _, msg := range msgs {
-		content := &genai.Content{Parts: []*genai.Part{}}
-
-		switch msg.Role {
-		case chat.ChatMessageRoleAssistant:
-			content.Role = "model"
-		case chat.ChatMessageRoleUser:
-			content.Role = "user"
-		case chat.ChatMessageRoleSystem, chat.ChatMessageRoleDeveloper, chat.ChatMessageRoleFunction, chat.ChatMessageRoleTool:
-			// Gemini's API only accepts "user" and "model" roles.
-			// Map all other roles to "user" to preserve instruction context.
-			content.Role = "user"
-		default:
-			content.Role = "user"
-		}
-
-		if strings.TrimSpace(msg.Content) != "" {
-			content.Parts = append(content.Parts, &genai.Part{Text: msg.Content})
-		}
-
-		// Handle multi-content messages (images, etc.)
-		for _, part := range msg.MultiContent {
-			switch part.Type {
-			case chat.ChatMessagePartTypeText:
-				content.Parts = append(content.Parts, &genai.Part{Text: part.Text})
-			case chat.ChatMessagePartTypeImageURL:
-				// TODO: Handle image URLs if needed
-				// This would require downloading and converting to inline data
-			}
-		}
-
-		contents = append(contents, content)
-	}
-
-	return contents
-}
-
-// extractTextFromResponse extracts text content from the response and appends
-// any web citations in a standardized format.
-func (o *Client) extractTextFromResponse(response *genai.GenerateContentResponse) string {
-	if response == nil {
-		return ""
-	}
-
-	text := o.extractTextParts(response)
-	citations := o.extractCitations(response)
-	if len(citations) > 0 {
-		return text + citationHeader + strings.Join(citations, citationSeparator)
-	}
-	return text
-}
-
-func (o *Client) extractTextParts(response *genai.GenerateContentResponse) string {
-	var builder strings.Builder
-	for _, candidate := range response.Candidates {
-		if candidate == nil || candidate.Content == nil {
-			continue
-		}
-		for _, part := range candidate.Content.Parts {
-			if part != nil && part.Text != "" {
-				builder.WriteString(part.Text)
-			}
-		}
-	}
-	return builder.String()
-}
-
-func (o *Client) extractCitations(response *genai.GenerateContentResponse) []string {
-	if response == nil || len(response.Candidates) == 0 {
-		return nil
-	}
-
-	citationMap := make(map[string]bool)
-	var citations []string
-	for _, candidate := range response.Candidates {
-		if candidate == nil || candidate.GroundingMetadata == nil {
-			continue
-		}
-		chunks := candidate.GroundingMetadata.GroundingChunks
-		if len(chunks) == 0 {
-			continue
-		}
-		for _, chunk := range chunks {
-			if chunk == nil || chunk.Web == nil {
-				continue
-			}
-			uri := chunk.Web.URI
-			title := chunk.Web.Title
-			if uri == "" || title == "" {
-				continue
-			}
-			var keyBuilder strings.Builder
-			keyBuilder.WriteString(uri)
-			keyBuilder.WriteByte('|')
-			keyBuilder.WriteString(title)
-			key := keyBuilder.String()
-			if !citationMap[key] {
-				citationMap[key] = true
-				citationText := fmt.Sprintf(citationFormat, title, uri)
-				citations = append(citations, citationText)
-			}
-		}
-	}
-	return citations
-}

internal/plugins/ai/gemini/gemini_test.go

@@ -4,10 +4,10 @@ import (
 	"strings"
 	"testing"
 
-	"google.golang.org/genai"
-
 	"github.com/danielmiessler/fabric/internal/chat"
 	"github.com/danielmiessler/fabric/internal/domain"
+	"github.com/danielmiessler/fabric/internal/plugins/ai/geminicommon"
+	"google.golang.org/genai"
 )
 
 // Test buildModelNameFull method
@@ -31,9 +31,8 @@ func TestBuildModelNameFull(t *testing.T) {
 	}
 }
 
-// Test extractTextFromResponse method
+// Test ExtractTextWithCitations from geminicommon
 func TestExtractTextFromResponse(t *testing.T) {
-	client := &Client{}
 	response := &genai.GenerateContentResponse{
 		Candidates: []*genai.Candidate{
 			{
@@ -48,7 +47,7 @@ func TestExtractTextFromResponse(t *testing.T) {
 	}
 	expected := "Hello, world!"
 
-	result := client.extractTextFromResponse(response)
+	result := geminicommon.ExtractTextWithCitations(response)
 
 	if result != expected {
 		t.Errorf("Expected %v, got %v", expected, result)
@@ -56,14 +55,12 @@ func TestExtractTextFromResponse(t *testing.T) {
 }
 
 func TestExtractTextFromResponse_Nil(t *testing.T) {
-	client := &Client{}
-	if got := client.extractTextFromResponse(nil); got != "" {
+	if got := geminicommon.ExtractTextWithCitations(nil); got != "" {
 		t.Fatalf("expected empty string, got %q", got)
 	}
 }
 
 func TestExtractTextFromResponse_EmptyGroundingChunks(t *testing.T) {
-	client := &Client{}
 	response := &genai.GenerateContentResponse{
 		Candidates: []*genai.Candidate{
 			{
@@ -72,7 +69,7 @@ func TestExtractTextFromResponse_EmptyGroundingChunks(t *testing.T) {
 			},
 		},
 	}
-	if got := client.extractTextFromResponse(response); got != "Hello" {
+	if got := geminicommon.ExtractTextWithCitations(response); got != "Hello" {
 		t.Fatalf("expected 'Hello', got %q", got)
 	}
 }
@@ -162,7 +159,6 @@ func TestBuildGenerateContentConfig_ThinkingTokens(t *testing.T) {
 }
 
 func TestCitationFormatting(t *testing.T) {
-	client := &Client{}
 	response := &genai.GenerateContentResponse{
 		Candidates: []*genai.Candidate{
 			{
@@ -178,7 +174,7 @@ func TestCitationFormatting(t *testing.T) {
 		},
 	}
 
-	result := client.extractTextFromResponse(response)
+	result := geminicommon.ExtractTextWithCitations(response)
 	if !strings.Contains(result, "## Sources") {
 		t.Fatalf("expected sources section in result: %s", result)
 	}
@@ -189,14 +185,13 @@ func TestCitationFormatting(t *testing.T) {
 
 // Test convertMessages handles role mapping correctly
 func TestConvertMessagesRoles(t *testing.T) {
-	client := &Client{}
 	msgs := []*chat.ChatCompletionMessage{
 		{Role: chat.ChatMessageRoleUser, Content: "user"},
 		{Role: chat.ChatMessageRoleAssistant, Content: "assistant"},
 		{Role: chat.ChatMessageRoleSystem, Content: "system"},
 	}
 
-	contents := client.convertMessages(msgs)
+	contents := geminicommon.ConvertMessages(msgs)
 
 	expected := []string{"user", "model", "user"}
 

internal/plugins/ai/geminicommon/geminicommon.go

@@ -0,0 +1,130 @@
+// Package geminicommon provides shared utilities for Gemini API integrations.
+// Used by both the standalone Gemini provider (API key auth) and VertexAI provider (ADC auth).
+package geminicommon
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/danielmiessler/fabric/internal/chat"
+	"google.golang.org/genai"
+)
+
+// Citation formatting constants
+const (
+	CitationHeader    = "\n\n## Sources\n\n"
+	CitationSeparator = "\n"
+	CitationFormat    = "- [%s](%s)"
+)
+
+// ConvertMessages converts fabric chat messages to genai Content format.
+// Gemini's API only accepts "user" and "model" roles, so other roles are mapped to "user".
+func ConvertMessages(msgs []*chat.ChatCompletionMessage) []*genai.Content {
+	var contents []*genai.Content
+
+	for _, msg := range msgs {
+		content := &genai.Content{Parts: []*genai.Part{}}
+
+		switch msg.Role {
+		case chat.ChatMessageRoleAssistant:
+			content.Role = "model"
+		case chat.ChatMessageRoleUser:
+			content.Role = "user"
+		case chat.ChatMessageRoleSystem, chat.ChatMessageRoleDeveloper, chat.ChatMessageRoleFunction, chat.ChatMessageRoleTool:
+			// Gemini's API only accepts "user" and "model" roles.
+			// Map all other roles to "user" to preserve instruction context.
+			content.Role = "user"
+		default:
+			content.Role = "user"
+		}
+
+		if strings.TrimSpace(msg.Content) != "" {
+			content.Parts = append(content.Parts, &genai.Part{Text: msg.Content})
+		}
+
+		// Handle multi-content messages (images, etc.)
+		for _, part := range msg.MultiContent {
+			switch part.Type {
+			case chat.ChatMessagePartTypeText:
+				content.Parts = append(content.Parts, &genai.Part{Text: part.Text})
+			case chat.ChatMessagePartTypeImageURL:
+				// TODO: Handle image URLs if needed
+				// This would require downloading and converting to inline data
+			}
+		}
+
+		contents = append(contents, content)
+	}
+
+	return contents
+}
+
+// ExtractText extracts just the text parts from a Gemini response.
+func ExtractText(response *genai.GenerateContentResponse) string {
+	if response == nil {
+		return ""
+	}
+
+	var builder strings.Builder
+	for _, candidate := range response.Candidates {
+		if candidate == nil || candidate.Content == nil {
+			continue
+		}
+		for _, part := range candidate.Content.Parts {
+			if part != nil && part.Text != "" {
+				builder.WriteString(part.Text)
+			}
+		}
+	}
+	return builder.String()
+}
+
+// ExtractTextWithCitations extracts text content from the response and appends
+// any web citations in a standardized format.
+func ExtractTextWithCitations(response *genai.GenerateContentResponse) string {
+	if response == nil {
+		return ""
+	}
+
+	text := ExtractText(response)
+	citations := ExtractCitations(response)
+	if len(citations) > 0 {
+		return text + CitationHeader + strings.Join(citations, CitationSeparator)
+	}
+	return text
+}
+
+// ExtractCitations extracts web citations from grounding metadata.
+func ExtractCitations(response *genai.GenerateContentResponse) []string {
+	if response == nil || len(response.Candidates) == 0 {
+		return nil
+	}
+
+	citationMap := make(map[string]bool)
+	var citations []string
+	for _, candidate := range response.Candidates {
+		if candidate == nil || candidate.GroundingMetadata == nil {
+			continue
+		}
+		chunks := candidate.GroundingMetadata.GroundingChunks
+		if len(chunks) == 0 {
+			continue
+		}
+		for _, chunk := range chunks {
+			if chunk == nil || chunk.Web == nil {
+				continue
+			}
+			uri := chunk.Web.URI
+			title := chunk.Web.Title
+			if uri == "" || title == "" {
+				continue
+			}
+			key := uri + "|" + title
+			if !citationMap[key] {
+				citationMap[key] = true
+				citations = append(citations, fmt.Sprintf(CitationFormat, title, uri))
+			}
+		}
+	}
+	return citations
+}

internal/plugins/ai/openai/openai_audio.go

@@ -10,12 +10,20 @@ import (
 	"slices"
 	"sort"
 	"strings"
+	"sync"
 
 	debuglog "github.com/danielmiessler/fabric/internal/log"
 
 	openai "github.com/openai/openai-go"
 )
 
+// transcriptionResult holds the result of a single chunk transcription.
+type transcriptionResult struct {
+	index int
+	text  string
+	err   error
+}
+
 // MaxAudioFileSize defines the maximum allowed size for audio uploads (25MB).
 const MaxAudioFileSize int64 = 25 * 1024 * 1024
 
@@ -73,27 +81,56 @@ func (o *Client) TranscribeFile(ctx context.Context, filePath, model string, spl
 		files = []string{filePath}
 	}
 
-	var builder strings.Builder
+	resultsChan := make(chan transcriptionResult, len(files))
+	var wg sync.WaitGroup
+
 	for i, f := range files {
-		debuglog.Log("Using model %s to transcribe part %d (file name: %s)...\n", model, i+1, f)
-		var chunk *os.File
-		if chunk, err = os.Open(f); err != nil {
-			return "", err
-		}
-		params := openai.AudioTranscriptionNewParams{
-			File:  chunk,
-			Model: openai.AudioModel(model),
-		}
-		var resp *openai.Transcription
-		resp, err = o.ApiClient.Audio.Transcriptions.New(ctx, params)
-		chunk.Close()
-		if err != nil {
-			return "", err
+		wg.Add(1)
+		go func(index int, filePath string) {
+			defer wg.Done()
+			debuglog.Log("Using model %s to transcribe part %d (file name: %s)...\n", model, index+1, filePath)
+
+			chunk, openErr := os.Open(filePath)
+			if openErr != nil {
+				resultsChan <- transcriptionResult{index: index, err: openErr}
+				return
+			}
+			defer chunk.Close()
+
+			params := openai.AudioTranscriptionNewParams{
+				File:  chunk,
+				Model: openai.AudioModel(model),
+			}
+			resp, transcribeErr := o.ApiClient.Audio.Transcriptions.New(ctx, params)
+			if transcribeErr != nil {
+				resultsChan <- transcriptionResult{index: index, err: transcribeErr}
+				return
+			}
+			resultsChan <- transcriptionResult{index: index, text: resp.Text}
+		}(i, f)
+	}
+
+	wg.Wait()
+	close(resultsChan)
+
+	results := make([]transcriptionResult, 0, len(files))
+	for result := range resultsChan {
+		if result.err != nil {
+			return "", result.err
 		}
+		results = append(results, result)
+	}
+
+	sort.Slice(results, func(i, j int) bool {
+		return results[i].index < results[j].index
+	})
+
+	var builder strings.Builder
+	for i, result := range results {
 		if i > 0 {
 			builder.WriteString(" ")
 		}
-		builder.WriteString(resp.Text)
+		builder.WriteString(result.text)
 	}
 
 	return builder.String(), nil

internal/plugins/ai/vertexai/models.go

@@ -0,0 +1,237 @@
+package vertexai
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"sort"
+	"strings"
+
+	debuglog "github.com/danielmiessler/fabric/internal/log"
+)
+
+const (
+	// API limits
+	maxResponseSize    = 10 * 1024 * 1024 // 10MB
+	errorResponseLimit = 1024             // 1KB for error messages
+
+	// Default region for Model Garden API (global doesn't work for this endpoint)
+	defaultModelGardenRegion = "us-central1"
+)
+
+// Supported Model Garden publishers (others can be added when SDK support is implemented)
+var publishers = []string{"google", "anthropic"}
+
+// publisherModelsResponse represents the API response from publishers.models.list
+type publisherModelsResponse struct {
+	PublisherModels []publisherModel `json:"publisherModels"`
+	NextPageToken   string           `json:"nextPageToken"`
+}
+
+// publisherModel represents a single model in the API response
+type publisherModel struct {
+	Name string `json:"name"` // Format: publishers/{publisher}/models/{model}
+}
+
+// fetchModelsPage makes a single API request and returns the parsed response.
+// Extracted to ensure proper cleanup of HTTP response bodies in pagination loops.
+func fetchModelsPage(ctx context.Context, httpClient *http.Client, url, projectID, publisher string) (*publisherModelsResponse, error) {
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create request: %w", err)
+	}
+
+	req.Header.Set("Accept", "application/json")
+	// Set quota project header required by Vertex AI API
+	req.Header.Set("x-goog-user-project", projectID)
+
+	resp, err := httpClient.Do(req)
+	if err != nil {
+		return nil, fmt.Errorf("request failed: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		bodyBytes, _ := io.ReadAll(io.LimitReader(resp.Body, errorResponseLimit))
+		debuglog.Debug(debuglog.Basic, "API error for %s: status %d, url: %s, body: %s\n", publisher, resp.StatusCode, url, string(bodyBytes))
+		return nil, fmt.Errorf("API returned status %d: %s", resp.StatusCode, string(bodyBytes))
+	}
+
+	bodyBytes, err := io.ReadAll(io.LimitReader(resp.Body, maxResponseSize+1))
+	if err != nil {
+		return nil, fmt.Errorf("failed to read response: %w", err)
+	}
+
+	if len(bodyBytes) > maxResponseSize {
+		return nil, fmt.Errorf("response too large (>%d bytes)", maxResponseSize)
+	}
+
+	var response publisherModelsResponse
+	if err := json.Unmarshal(bodyBytes, &response); err != nil {
+		return nil, fmt.Errorf("failed to parse response: %w", err)
+	}
+
+	return &response, nil
+}
+
+// listPublisherModels fetches models from a specific publisher via the Model Garden API
+func listPublisherModels(ctx context.Context, httpClient *http.Client, region, projectID, publisher string) ([]string, error) {
+	// Use default region if global or empty (Model Garden API requires a specific region)
+	if region == "" || region == "global" {
+		region = defaultModelGardenRegion
+	}
+
+	baseURL := fmt.Sprintf("https://%s-aiplatform.googleapis.com/v1beta1/publishers/%s/models", region, publisher)
+
+	var allModels []string
+	pageToken := ""
+
+	for {
+		url := baseURL
+		if pageToken != "" {
+			url = fmt.Sprintf("%s?pageToken=%s", baseURL, pageToken)
+		}
+
+		response, err := fetchModelsPage(ctx, httpClient, url, projectID, publisher)
+		if err != nil {
+			return nil, err
+		}
+
+		// Extract model names, stripping the publishers/{publisher}/models/ prefix
+		for _, model := range response.PublisherModels {
+			modelName := extractModelName(model.Name)
+			if modelName != "" {
+				allModels = append(allModels, modelName)
+			}
+		}
+
+		// Check for more pages
+		if response.NextPageToken == "" {
+			break
+		}
+		pageToken = response.NextPageToken
+	}
+
+	debuglog.Debug(debuglog.Detailed, "Listed %d models from publisher %s\n", len(allModels), publisher)
+	return allModels, nil
+}
+
+// extractModelName extracts the model name from the full resource path
+// Input: "publishers/google/models/gemini-2.0-flash"
+// Output: "gemini-2.0-flash"
+func extractModelName(fullName string) string {
+	parts := strings.Split(fullName, "/")
+	if len(parts) >= 4 && parts[0] == "publishers" && parts[2] == "models" {
+		return parts[3]
+	}
+	// Fallback: return the last segment
+	if len(parts) > 0 {
+		return parts[len(parts)-1]
+	}
+	return fullName
+}
+
+// sortModels sorts models by priority: Gemini > Claude > Others
+// Within each group, models are sorted alphabetically
+func sortModels(models []string) []string {
+	sort.Slice(models, func(i, j int) bool {
+		pi := modelPriority(models[i])
+		pj := modelPriority(models[j])
+		if pi != pj {
+			return pi < pj
+		}
+		// Same priority: sort alphabetically (case-insensitive)
+		return strings.ToLower(models[i]) < strings.ToLower(models[j])
+	})
+	return models
+}
+
+// modelPriority returns the sort priority for a model (lower = higher priority)
+func modelPriority(model string) int {
+	lower := strings.ToLower(model)
+	switch {
+	case strings.HasPrefix(lower, "gemini"):
+		return 1
+	case strings.HasPrefix(lower, "claude"):
+		return 2
+	default:
+		return 3
+	}
+}
+
+// knownGeminiModels is a curated list of Gemini models available on Vertex AI.
+// Vertex AI doesn't provide a list API for Gemini models - they must be known ahead of time.
+// This list is based on Google Cloud documentation as of January 2025.
+// See: https://docs.cloud.google.com/vertex-ai/generative-ai/docs/models
+var knownGeminiModels = []string{
+	// Gemini 3 (Preview)
+	"gemini-3-pro-preview",
+	"gemini-3-flash-preview",
+	// Gemini 2.5 (GA)
+	"gemini-2.5-pro",
+	"gemini-2.5-flash",
+	"gemini-2.5-flash-lite",
+	// Gemini 2.0 (GA)
+	"gemini-2.0-flash",
+	"gemini-2.0-flash-lite",
+}
+
+// getKnownGeminiModels returns the curated list of Gemini models available on Vertex AI.
+// Unlike third-party models which can be listed via the Model Garden API,
+// Gemini models must be known ahead of time as there's no list endpoint for them.
+func getKnownGeminiModels() []string {
+	return knownGeminiModels
+}
+
+// isGeminiModel returns true if the model is a Gemini model
+func isGeminiModel(modelName string) bool {
+	return strings.HasPrefix(strings.ToLower(modelName), "gemini")
+}
+
+// isConversationalModel returns true if the model is suitable for text generation/chat
+// Filters out image generation, embeddings, and other non-conversational models
+func isConversationalModel(modelName string) bool {
+	lower := strings.ToLower(modelName)
+
+	// Exclude patterns for non-conversational models
+	excludePatterns := []string{
+		"imagen", // Image generation models
+		"imagegeneration",
+		"imagetext",
+		"image-segmentation",
+		"embedding", // Embedding models
+		"textembedding",
+		"multimodalembedding",
+		"text-bison", // Legacy completion models (not chat)
+		"text-unicorn",
+		"code-bison", // Legacy code models
+		"code-gecko",
+		"codechat-bison", // Deprecated chat model
+		"chat-bison",     // Deprecated chat model
+		"veo",            // Video generation
+		"chirp",          // Audio/speech models
+		"medlm",          // Medical models (restricted)
+		"medical",
+	}
+
+	for _, pattern := range excludePatterns {
+		if strings.Contains(lower, pattern) {
+			return false
+		}
+	}
+
+	return true
+}
+
+// filterConversationalModels returns only models suitable for text generation/chat
+func filterConversationalModels(models []string) []string {
+	var filtered []string
+	for _, model := range models {
+		if isConversationalModel(model) {
+			filtered = append(filtered, model)
+		}
+	}
+	return filtered
+}

internal/plugins/ai/vertexai/vertexai.go

@@ -9,13 +9,18 @@ import (
 	"github.com/anthropics/anthropic-sdk-go/vertex"
 	"github.com/danielmiessler/fabric/internal/chat"
 	"github.com/danielmiessler/fabric/internal/domain"
+	debuglog "github.com/danielmiessler/fabric/internal/log"
 	"github.com/danielmiessler/fabric/internal/plugins"
+	"github.com/danielmiessler/fabric/internal/plugins/ai/geminicommon"
+	"golang.org/x/oauth2"
+	"golang.org/x/oauth2/google"
+	"google.golang.org/genai"
 )
 
 const (
 	cloudPlatformScope = "https://www.googleapis.com/auth/cloud-platform"
 	defaultRegion      = "global"
-	maxTokens          = 4096
+	defaultMaxTokens   = 4096
 )
 
 // NewClient creates a new Vertex AI client for accessing Claude models via Google Cloud
@@ -59,17 +64,78 @@ func (c *Client) configure() error {
 }
 
 func (c *Client) ListModels() ([]string, error) {
-	// Return Claude models available on Vertex AI
-	return []string{
-		string(anthropic.ModelClaudeSonnet4_5),
-		string(anthropic.ModelClaudeOpus4_5),
-		string(anthropic.ModelClaudeHaiku4_5),
-		string(anthropic.ModelClaude3_7SonnetLatest),
-		string(anthropic.ModelClaude3_5HaikuLatest),
-	}, nil
+	ctx := context.Background()
+
+	// Get ADC credentials for API authentication
+	creds, err := google.FindDefaultCredentials(ctx, cloudPlatformScope)
+	if err != nil {
+		return nil, fmt.Errorf("failed to get Google credentials (ensure ADC is configured): %w", err)
+	}
+	httpClient := oauth2.NewClient(ctx, creds.TokenSource)
+
+	// Query all publishers in parallel for better performance
+	type result struct {
+		models    []string
+		err       error
+		publisher string
+	}
+	// +1 for known Gemini models (no API to list them)
+	results := make(chan result, len(publishers)+1)
+
+	// Query Model Garden API for third-party models
+	for _, pub := range publishers {
+		go func(publisher string) {
+			models, err := listPublisherModels(ctx, httpClient, c.Region.Value, c.ProjectID.Value, publisher)
+			results <- result{models: models, err: err, publisher: publisher}
+		}(pub)
+	}
+
+	// Add known Gemini models (Vertex AI doesn't have a list API for Gemini)
+	go func() {
+		results <- result{models: getKnownGeminiModels(), err: nil, publisher: "gemini"}
+	}()
+
+	// Collect results from all sources
+	var allModels []string
+	for range len(publishers) + 1 {
+		r := <-results
+		if r.err != nil {
+			// Log warning but continue - some sources may not be available
+			debuglog.Debug(debuglog.Basic, "Failed to list %s models: %v\n", r.publisher, r.err)
+			continue
+		}
+		allModels = append(allModels, r.models...)
+	}
+
+	if len(allModels) == 0 {
+		return nil, fmt.Errorf("no models found from any publisher")
+	}
+
+	// Filter to only conversational models and sort
+	filtered := filterConversationalModels(allModels)
+	if len(filtered) == 0 {
+		return nil, fmt.Errorf("no conversational models found")
+	}
+
+	return sortModels(filtered), nil
 }
 
 func (c *Client) Send(ctx context.Context, msgs []*chat.ChatCompletionMessage, opts *domain.ChatOptions) (string, error) {
+	if isGeminiModel(opts.Model) {
+		return c.sendGemini(ctx, msgs, opts)
+	}
+	return c.sendClaude(ctx, msgs, opts)
+}
+
+// getMaxTokens returns the max output tokens to use for a request
+func getMaxTokens(opts *domain.ChatOptions) int64 {
+	if opts.MaxTokens > 0 {
+		return int64(opts.MaxTokens)
+	}
+	return int64(defaultMaxTokens)
+}
+
+func (c *Client) sendClaude(ctx context.Context, msgs []*chat.ChatCompletionMessage, opts *domain.ChatOptions) (string, error) {
 	if c.client == nil {
 		return "", fmt.Errorf("VertexAI client not initialized")
 	}
@@ -80,14 +146,22 @@ func (c *Client) Send(ctx context.Context, msgs []*chat.ChatCompletionMessage, o
 		return "", fmt.Errorf("no valid messages to send")
 	}
 
-	// Create the request
-	response, err := c.client.Messages.New(ctx, anthropic.MessageNewParams{
-		Model:       anthropic.Model(opts.Model),
-		MaxTokens:   int64(maxTokens),
-		Messages:    anthropicMessages,
-		Temperature: anthropic.Opt(opts.Temperature),
-	})
+	// Build request params
+	params := anthropic.MessageNewParams{
+		Model:     anthropic.Model(opts.Model),
+		MaxTokens: getMaxTokens(opts),
+		Messages:  anthropicMessages,
+	}
 
+	// Only set one of Temperature or TopP as some models don't allow both
+	// (following anthropic.go pattern)
+	if opts.TopP != domain.DefaultTopP {
+		params.TopP = anthropic.Opt(opts.TopP)
+	} else {
+		params.Temperature = anthropic.Opt(opts.Temperature)
+	}
+
+	response, err := c.client.Messages.New(ctx, params)
 	if err != nil {
 		return "", err
 	}
@@ -108,6 +182,13 @@ func (c *Client) Send(ctx context.Context, msgs []*chat.ChatCompletionMessage, o
 }
 
 func (c *Client) SendStream(msgs []*chat.ChatCompletionMessage, opts *domain.ChatOptions, channel chan domain.StreamUpdate) error {
+	if isGeminiModel(opts.Model) {
+		return c.sendStreamGemini(msgs, opts, channel)
+	}
+	return c.sendStreamClaude(msgs, opts, channel)
+}
+
+func (c *Client) sendStreamClaude(msgs []*chat.ChatCompletionMessage, opts *domain.ChatOptions, channel chan domain.StreamUpdate) error {
 	if c.client == nil {
 		close(channel)
 		return fmt.Errorf("VertexAI client not initialized")
@@ -122,13 +203,22 @@ func (c *Client) SendStream(msgs []*chat.ChatCompletionMessage, opts *domain.Cha
 		return fmt.Errorf("no valid messages to send")
 	}
 
+	// Build request params
+	params := anthropic.MessageNewParams{
+		Model:     anthropic.Model(opts.Model),
+		MaxTokens: getMaxTokens(opts),
+		Messages:  anthropicMessages,
+	}
+
+	// Only set one of Temperature or TopP as some models don't allow both
+	if opts.TopP != domain.DefaultTopP {
+		params.TopP = anthropic.Opt(opts.TopP)
+	} else {
+		params.Temperature = anthropic.Opt(opts.Temperature)
+	}
+
 	// Create streaming request
-	stream := c.client.Messages.NewStreaming(ctx, anthropic.MessageNewParams{
-		Model:       anthropic.Model(opts.Model),
-		MaxTokens:   int64(maxTokens),
-		Messages:    anthropicMessages,
-		Temperature: anthropic.Opt(opts.Temperature),
-	})
+	stream := c.client.Messages.NewStreaming(ctx, params)
 
 	// Process stream
 	for stream.Next() {
@@ -167,6 +257,144 @@ func (c *Client) SendStream(msgs []*chat.ChatCompletionMessage, opts *domain.Cha
 	return stream.Err()
 }
 
+// Gemini methods using genai SDK with Vertex AI backend
+
+// getGeminiRegion returns the appropriate region for a Gemini model.
+// Preview models are often only available on the global endpoint.
+func (c *Client) getGeminiRegion(model string) string {
+	if strings.Contains(strings.ToLower(model), "preview") {
+		return "global"
+	}
+	return c.Region.Value
+}
+
+func (c *Client) sendGemini(ctx context.Context, msgs []*chat.ChatCompletionMessage, opts *domain.ChatOptions) (string, error) {
+	client, err := genai.NewClient(ctx, &genai.ClientConfig{
+		Project:  c.ProjectID.Value,
+		Location: c.getGeminiRegion(opts.Model),
+		Backend:  genai.BackendVertexAI,
+	})
+	if err != nil {
+		return "", fmt.Errorf("failed to create Gemini client: %w", err)
+	}
+
+	contents := geminicommon.ConvertMessages(msgs)
+	if len(contents) == 0 {
+		return "", fmt.Errorf("no valid messages to send")
+	}
+
+	config := c.buildGeminiConfig(opts)
+
+	response, err := client.Models.GenerateContent(ctx, opts.Model, contents, config)
+	if err != nil {
+		return "", err
+	}
+
+	return geminicommon.ExtractTextWithCitations(response), nil
+}
+
+// buildGeminiConfig creates the generation config for Gemini models
+// following the gemini.go pattern for feature parity
+func (c *Client) buildGeminiConfig(opts *domain.ChatOptions) *genai.GenerateContentConfig {
+	temperature := float32(opts.Temperature)
+	topP := float32(opts.TopP)
+	config := &genai.GenerateContentConfig{
+		Temperature:     &temperature,
+		TopP:            &topP,
+		MaxOutputTokens: int32(getMaxTokens(opts)),
+	}
+
+	// Add web search support
+	if opts.Search {
+		config.Tools = []*genai.Tool{{GoogleSearch: &genai.GoogleSearch{}}}
+	}
+
+	// Add thinking support
+	if tc := parseGeminiThinking(opts.Thinking); tc != nil {
+		config.ThinkingConfig = tc
+	}
+
+	return config
+}
+
+// parseGeminiThinking converts thinking level to Gemini thinking config
+func parseGeminiThinking(level domain.ThinkingLevel) *genai.ThinkingConfig {
+	lower := strings.ToLower(strings.TrimSpace(string(level)))
+	switch domain.ThinkingLevel(lower) {
+	case "", domain.ThinkingOff:
+		return nil
+	case domain.ThinkingLow, domain.ThinkingMedium, domain.ThinkingHigh:
+		if budget, ok := domain.ThinkingBudgets[domain.ThinkingLevel(lower)]; ok {
+			b := int32(budget)
+			return &genai.ThinkingConfig{IncludeThoughts: true, ThinkingBudget: &b}
+		}
+	default:
+		// Try parsing as integer token count
+		var tokens int
+		if _, err := fmt.Sscanf(lower, "%d", &tokens); err == nil && tokens > 0 {
+			t := int32(tokens)
+			return &genai.ThinkingConfig{IncludeThoughts: true, ThinkingBudget: &t}
+		}
+	}
+	return nil
+}
+
+func (c *Client) sendStreamGemini(msgs []*chat.ChatCompletionMessage, opts *domain.ChatOptions, channel chan domain.StreamUpdate) error {
+	defer close(channel)
+	ctx := context.Background()
+
+	client, err := genai.NewClient(ctx, &genai.ClientConfig{
+		Project:  c.ProjectID.Value,
+		Location: c.getGeminiRegion(opts.Model),
+		Backend:  genai.BackendVertexAI,
+	})
+	if err != nil {
+		return fmt.Errorf("failed to create Gemini client: %w", err)
+	}
+
+	contents := geminicommon.ConvertMessages(msgs)
+	if len(contents) == 0 {
+		return fmt.Errorf("no valid messages to send")
+	}
+
+	config := c.buildGeminiConfig(opts)
+
+	stream := client.Models.GenerateContentStream(ctx, opts.Model, contents, config)
+
+	for response, err := range stream {
+		if err != nil {
+			channel <- domain.StreamUpdate{
+				Type:    domain.StreamTypeError,
+				Content: fmt.Sprintf("Error: %v", err),
+			}
+			return err
+		}
+
+		text := geminicommon.ExtractText(response)
+		if text != "" {
+			channel <- domain.StreamUpdate{
+				Type:    domain.StreamTypeContent,
+				Content: text,
+			}
+		}
+
+		if response.UsageMetadata != nil {
+			channel <- domain.StreamUpdate{
+				Type: domain.StreamTypeUsage,
+				Usage: &domain.UsageMetadata{
+					InputTokens:  int(response.UsageMetadata.PromptTokenCount),
+					OutputTokens: int(response.UsageMetadata.CandidatesTokenCount),
+					TotalTokens:  int(response.UsageMetadata.TotalTokenCount),
+				},
+			}
+		}
+	}
+
+	return nil
+}
+
+// Claude message conversion
+
 func (c *Client) toMessages(msgs []*chat.ChatCompletionMessage) []anthropic.MessageParam {
 	// Convert messages to Anthropic format with proper role handling
 	// - System messages become part of the first user message

internal/plugins/ai/vertexai/vertexai_test.go

@@ -0,0 +1,442 @@
+package vertexai
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/danielmiessler/fabric/internal/domain"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestExtractModelName(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    string
+		expected string
+	}{
+		{
+			name:     "standard format",
+			input:    "publishers/google/models/gemini-2.0-flash",
+			expected: "gemini-2.0-flash",
+		},
+		{
+			name:     "anthropic model",
+			input:    "publishers/anthropic/models/claude-sonnet-4-5",
+			expected: "claude-sonnet-4-5",
+		},
+		{
+			name:     "model with version",
+			input:    "publishers/anthropic/models/claude-3-opus@20240229",
+			expected: "claude-3-opus@20240229",
+		},
+		{
+			name:     "just model name",
+			input:    "gemini-pro",
+			expected: "gemini-pro",
+		},
+		{
+			name:     "empty string",
+			input:    "",
+			expected: "",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := extractModelName(tt.input)
+			assert.Equal(t, tt.expected, result)
+		})
+	}
+}
+
+func TestSortModels(t *testing.T) {
+	input := []string{
+		"claude-sonnet-4-5",
+		"gemini-2.0-flash",
+		"gemini-pro",
+		"claude-opus-4",
+		"unknown-model",
+	}
+
+	result := sortModels(input)
+
+	// Verify order: Gemini first, then Claude, then others (alphabetically within each group)
+	expected := []string{
+		"gemini-2.0-flash",
+		"gemini-pro",
+		"claude-opus-4",
+		"claude-sonnet-4-5",
+		"unknown-model",
+	}
+
+	assert.Equal(t, expected, result)
+}
+
+func TestModelPriority(t *testing.T) {
+	tests := []struct {
+		model    string
+		priority int
+	}{
+		{"gemini-2.0-flash", 1},
+		{"Gemini-Pro", 1},
+		{"claude-sonnet-4-5", 2},
+		{"CLAUDE-OPUS", 2},
+		{"some-other-model", 3},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.model, func(t *testing.T) {
+			result := modelPriority(tt.model)
+			assert.Equal(t, tt.priority, result, "priority for %s", tt.model)
+		})
+	}
+}
+
+func TestListPublisherModels_Success(t *testing.T) {
+	// Create mock server
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		assert.Equal(t, http.MethodGet, r.Method)
+		assert.Contains(t, r.URL.Path, "/v1/publishers/google/models")
+
+		response := publisherModelsResponse{
+			PublisherModels: []publisherModel{
+				{Name: "publishers/google/models/gemini-2.0-flash"},
+				{Name: "publishers/google/models/gemini-pro"},
+			},
+		}
+		w.Header().Set("Content-Type", "application/json")
+		json.NewEncoder(w).Encode(response)
+	}))
+	defer server.Close()
+
+	// Note: This test would need to mock the actual API endpoint
+	// For now, we just verify the mock server works
+	resp, err := http.Get(server.URL + "/v1/publishers/google/models")
+	require.NoError(t, err)
+	defer resp.Body.Close()
+
+	var response publisherModelsResponse
+	err = json.NewDecoder(resp.Body).Decode(&response)
+	require.NoError(t, err)
+
+	assert.Len(t, response.PublisherModels, 2)
+	assert.Equal(t, "publishers/google/models/gemini-2.0-flash", response.PublisherModels[0].Name)
+}
+
+func TestListPublisherModels_Pagination(t *testing.T) {
+	callCount := 0
+
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		callCount++
+
+		var response publisherModelsResponse
+		if callCount == 1 {
+			response = publisherModelsResponse{
+				PublisherModels: []publisherModel{
+					{Name: "publishers/google/models/gemini-flash"},
+				},
+				NextPageToken: "page2",
+			}
+		} else {
+			response = publisherModelsResponse{
+				PublisherModels: []publisherModel{
+					{Name: "publishers/google/models/gemini-pro"},
+				},
+				NextPageToken: "",
+			}
+		}
+
+		w.Header().Set("Content-Type", "application/json")
+		json.NewEncoder(w).Encode(response)
+	}))
+	defer server.Close()
+
+	// Verify the server handles pagination correctly
+	resp, err := http.Get(server.URL + "/page1")
+	require.NoError(t, err)
+	resp.Body.Close()
+
+	resp, err = http.Get(server.URL + "/page2")
+	require.NoError(t, err)
+	resp.Body.Close()
+
+	assert.Equal(t, 2, callCount)
+}
+
+func TestListPublisherModels_ErrorResponse(t *testing.T) {
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(http.StatusForbidden)
+		w.Write([]byte(`{"error": "access denied"}`))
+	}))
+	defer server.Close()
+
+	resp, err := http.Get(server.URL + "/v1/publishers/google/models")
+	require.NoError(t, err)
+	defer resp.Body.Close()
+
+	assert.Equal(t, http.StatusForbidden, resp.StatusCode)
+}
+
+func TestNewClient(t *testing.T) {
+	client := NewClient()
+
+	assert.NotNil(t, client)
+	assert.Equal(t, "VertexAI", client.Name)
+	assert.NotNil(t, client.ProjectID)
+	assert.NotNil(t, client.Region)
+	assert.Equal(t, "global", client.Region.Value)
+}
+
+func TestPublishersListComplete(t *testing.T) {
+	// Verify supported publishers are in the list
+	expectedPublishers := []string{"google", "anthropic"}
+
+	assert.Equal(t, expectedPublishers, publishers)
+}
+
+func TestIsConversationalModel(t *testing.T) {
+	tests := []struct {
+		model    string
+		expected bool
+	}{
+		// Conversational models (should return true)
+		{"gemini-2.0-flash", true},
+		{"gemini-2.5-pro", true},
+		{"claude-sonnet-4-5", true},
+		{"claude-opus-4", true},
+		{"deepseek-v3", true},
+		{"llama-3.1-405b", true},
+		{"mistral-large", true},
+
+		// Non-conversational models (should return false)
+		{"imagen-3.0-capability-002", false},
+		{"imagen-4.0-fast-generate-001", false},
+		{"imagegeneration", false},
+		{"imagetext", false},
+		{"image-segmentation-001", false},
+		{"textembedding-gecko", false},
+		{"multimodalembedding", false},
+		{"text-embedding-004", false},
+		{"text-bison", false},
+		{"text-unicorn", false},
+		{"code-bison", false},
+		{"code-gecko", false},
+		{"codechat-bison", false},
+		{"chat-bison", false},
+		{"veo-001", false},
+		{"chirp", false},
+		{"medlm-medium", false},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.model, func(t *testing.T) {
+			result := isConversationalModel(tt.model)
+			assert.Equal(t, tt.expected, result, "isConversationalModel(%s)", tt.model)
+		})
+	}
+}
+
+func TestFilterConversationalModels(t *testing.T) {
+	input := []string{
+		"gemini-2.0-flash",
+		"imagen-3.0-capability-002",
+		"claude-sonnet-4-5",
+		"textembedding-gecko",
+		"deepseek-v3",
+		"chat-bison",
+		"llama-3.1-405b",
+		"code-bison",
+	}
+
+	result := filterConversationalModels(input)
+
+	expected := []string{
+		"gemini-2.0-flash",
+		"claude-sonnet-4-5",
+		"deepseek-v3",
+		"llama-3.1-405b",
+	}
+
+	assert.Equal(t, expected, result)
+}
+
+func TestFilterConversationalModels_EmptyInput(t *testing.T) {
+	result := filterConversationalModels([]string{})
+	assert.Empty(t, result)
+}
+
+func TestFilterConversationalModels_AllFiltered(t *testing.T) {
+	input := []string{
+		"imagen-3.0",
+		"textembedding-gecko",
+		"chat-bison",
+	}
+
+	result := filterConversationalModels(input)
+	assert.Empty(t, result)
+}
+
+func TestIsGeminiModel(t *testing.T) {
+	tests := []struct {
+		model    string
+		expected bool
+	}{
+		{"gemini-2.5-pro", true},
+		{"gemini-3-pro-preview", true},
+		{"Gemini-2.0-flash", true},
+		{"GEMINI-flash", true},
+		{"claude-sonnet-4-5", false},
+		{"claude-opus-4", false},
+		{"deepseek-v3", false},
+		{"llama-3.1-405b", false},
+		{"", false},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.model, func(t *testing.T) {
+			result := isGeminiModel(tt.model)
+			assert.Equal(t, tt.expected, result, "isGeminiModel(%s)", tt.model)
+		})
+	}
+}
+
+func TestGetMaxTokens(t *testing.T) {
+	tests := []struct {
+		name     string
+		opts     *domain.ChatOptions
+		expected int64
+	}{
+		{
+			name:     "MaxTokens specified",
+			opts:     &domain.ChatOptions{MaxTokens: 8192},
+			expected: 8192,
+		},
+		{
+			name:     "Default when MaxTokens is 0",
+			opts:     &domain.ChatOptions{MaxTokens: 0},
+			expected: int64(defaultMaxTokens),
+		},
+		{
+			name:     "Default when MaxTokens is negative",
+			opts:     &domain.ChatOptions{MaxTokens: -1},
+			expected: int64(defaultMaxTokens),
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := getMaxTokens(tt.opts)
+			assert.Equal(t, tt.expected, result)
+		})
+	}
+}
+
+func TestParseGeminiThinking(t *testing.T) {
+	tests := []struct {
+		name           string
+		level          domain.ThinkingLevel
+		expectNil      bool
+		expectedBudget int32
+	}{
+		{
+			name:      "empty string returns nil",
+			level:     "",
+			expectNil: true,
+		},
+		{
+			name:      "off returns nil",
+			level:     domain.ThinkingOff,
+			expectNil: true,
+		},
+		{
+			name:           "low thinking",
+			level:          domain.ThinkingLow,
+			expectNil:      false,
+			expectedBudget: int32(domain.ThinkingBudgets[domain.ThinkingLow]),
+		},
+		{
+			name:           "medium thinking",
+			level:          domain.ThinkingMedium,
+			expectNil:      false,
+			expectedBudget: int32(domain.ThinkingBudgets[domain.ThinkingMedium]),
+		},
+		{
+			name:           "high thinking",
+			level:          domain.ThinkingHigh,
+			expectNil:      false,
+			expectedBudget: int32(domain.ThinkingBudgets[domain.ThinkingHigh]),
+		},
+		{
+			name:           "numeric string",
+			level:          "5000",
+			expectNil:      false,
+			expectedBudget: 5000,
+		},
+		{
+			name:      "invalid string returns nil",
+			level:     "invalid",
+			expectNil: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := parseGeminiThinking(tt.level)
+			if tt.expectNil {
+				assert.Nil(t, result)
+			} else {
+				require.NotNil(t, result)
+				assert.True(t, result.IncludeThoughts)
+				assert.Equal(t, tt.expectedBudget, *result.ThinkingBudget)
+			}
+		})
+	}
+}
+
+func TestBuildGeminiConfig(t *testing.T) {
+	client := &Client{}
+
+	t.Run("basic config with temperature and TopP", func(t *testing.T) {
+		opts := &domain.ChatOptions{
+			Temperature: 0.7,
+			TopP:        0.9,
+			MaxTokens:   8192,
+		}
+		config := client.buildGeminiConfig(opts)
+
+		assert.NotNil(t, config)
+		assert.Equal(t, float32(0.7), *config.Temperature)
+		assert.Equal(t, float32(0.9), *config.TopP)
+		assert.Equal(t, int32(8192), config.MaxOutputTokens)
+		assert.Nil(t, config.Tools)
+		assert.Nil(t, config.ThinkingConfig)
+	})
+
+	t.Run("config with search enabled", func(t *testing.T) {
+		opts := &domain.ChatOptions{
+			Temperature: 0.5,
+			TopP:        0.8,
+			Search:      true,
+		}
+		config := client.buildGeminiConfig(opts)
+
+		assert.NotNil(t, config.Tools)
+		assert.Len(t, config.Tools, 1)
+		assert.NotNil(t, config.Tools[0].GoogleSearch)
+	})
+
+	t.Run("config with thinking enabled", func(t *testing.T) {
+		opts := &domain.ChatOptions{
+			Temperature: 0.5,
+			TopP:        0.8,
+			Thinking:    domain.ThinkingHigh,
+		}
+		config := client.buildGeminiConfig(opts)
+
+		assert.NotNil(t, config.ThinkingConfig)
+		assert.True(t, config.ThinkingConfig.IncludeThoughts)
+	})
+}

internal/server/chat.go

@@ -145,6 +145,8 @@ func (h *ChatHandler) HandleChat(c *gin.Context) {
 					FrequencyPenalty: request.FrequencyPenalty,
 					PresencePenalty:  request.PresencePenalty,
 					Thinking:         request.Thinking,
+					Search:           request.Search,
+					SearchLocation:   request.SearchLocation,
 					UpdateChan:       streamChan,
 					Quiet:            true,
 				}

nix/pkgs/fabric/version.nix

@@ -1 +1 @@
-"1.4.369"
+"1.4.375"