feat: add new v20251125 version

## Description

Addresses an issue where Dataplex AspectTypes created during integration
tests were not consistently deleted. This accumulation led to exceeding
the AspectType quota.
To prevent this, the test setup now includes a step to list and delete
all existing AspectTypes within the test project and location *before*
attempting to create any new ones. This ensures a clean state for each
test run and avoids hitting the quota.


## PR Checklist

> Thank you for opening a Pull Request! Before submitting your PR, there
are a
> few things you can do to make sure it goes smoothly:

- [ ] Make sure you reviewed

[CONTRIBUTING.md](https://github.com/googleapis/genai-toolbox/blob/main/CONTRIBUTING.md)
- [ ] Make sure to open an issue as a

[bug/issue](https://github.com/googleapis/genai-toolbox/issues/new/choose)
  before writing your code! That way we can discuss the change, evaluate
  designs, and agree on the general idea
- [ ] Ensure the tests and linter pass
- [ ] Code coverage does not decrease (if any source code was changed)
- [ ] Appropriate docs were updated (if necessary)
- [ ] Make sure to add `!` if this involve a breaking change

🛠️ Fixes #2057

Co-authored-by: Averi Kitsch <akitsch@google.com>

docs/en/how-to/connect_via_mcp.md

@@ -20,6 +20,7 @@ The native SDKs can be combined with MCP clients in many cases.
 
 Toolbox currently supports the following versions of MCP specification:
 
+* [2025-11-25](https://modelcontextprotocol.io/specification/2025-11-25)
 * [2025-06-18](https://modelcontextprotocol.io/specification/2025-06-18)
 * [2025-03-26](https://modelcontextprotocol.io/specification/2025-03-26)
 * [2024-11-05](https://modelcontextprotocol.io/specification/2024-11-05)

internal/server/mcp/mcp.go

@@ -27,19 +27,21 @@ import (
 	v20241105 "github.com/googleapis/genai-toolbox/internal/server/mcp/v20241105"
 	v20250326 "github.com/googleapis/genai-toolbox/internal/server/mcp/v20250326"
 	v20250618 "github.com/googleapis/genai-toolbox/internal/server/mcp/v20250618"
+	v20251125 "github.com/googleapis/genai-toolbox/internal/server/mcp/v20251125"
 	"github.com/googleapis/genai-toolbox/internal/server/resources"
 	"github.com/googleapis/genai-toolbox/internal/tools"
 )
 
 // LATEST_PROTOCOL_VERSION is the latest version of the MCP protocol supported.
 // Update the version used in InitializeResponse when this value is updated.
-const LATEST_PROTOCOL_VERSION = v20250618.PROTOCOL_VERSION
+const LATEST_PROTOCOL_VERSION = v20251125.PROTOCOL_VERSION
 
 // SUPPORTED_PROTOCOL_VERSIONS is the MCP protocol versions that are supported.
 var SUPPORTED_PROTOCOL_VERSIONS = []string{
 	v20241105.PROTOCOL_VERSION,
 	v20250326.PROTOCOL_VERSION,
 	v20250618.PROTOCOL_VERSION,
+	v20251125.PROTOCOL_VERSION,
 }
 
 // InitializeResponse runs capability negotiation and protocol version agreement.
@@ -102,6 +104,8 @@ func NotificationHandler(ctx context.Context, body []byte) error {
 // This is the Operation phase of the lifecycle for MCP client-server connections.
 func ProcessMethod(ctx context.Context, mcpVersion string, id jsonrpc.RequestId, method string, toolset tools.Toolset, promptset prompts.Promptset, resourceMgr *resources.ResourceManager, body []byte, header http.Header) (any, error) {
 	switch mcpVersion {
+	case v20251125.PROTOCOL_VERSION:
+		return v20251125.ProcessMethod(ctx, id, method, toolset, promptset, resourceMgr, body, header)
 	case v20250618.PROTOCOL_VERSION:
 		return v20250618.ProcessMethod(ctx, id, method, toolset, promptset, resourceMgr, body, header)
 	case v20250326.PROTOCOL_VERSION:

internal/server/mcp/v20251125/method.go

@@ -0,0 +1,326 @@
+// 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 v20251125
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+	"strings"
+
+	"github.com/googleapis/genai-toolbox/internal/prompts"
+	"github.com/googleapis/genai-toolbox/internal/server/mcp/jsonrpc"
+	"github.com/googleapis/genai-toolbox/internal/server/resources"
+	"github.com/googleapis/genai-toolbox/internal/tools"
+	"github.com/googleapis/genai-toolbox/internal/util"
+)
+
+// ProcessMethod returns a response for the request.
+func ProcessMethod(ctx context.Context, id jsonrpc.RequestId, method string, toolset tools.Toolset, promptset prompts.Promptset, resourceMgr *resources.ResourceManager, body []byte, header http.Header) (any, error) {
+	switch method {
+	case PING:
+		return pingHandler(id)
+	case TOOLS_LIST:
+		return toolsListHandler(id, toolset, body)
+	case TOOLS_CALL:
+		return toolsCallHandler(ctx, id, resourceMgr, body, header)
+	case PROMPTS_LIST:
+		return promptsListHandler(ctx, id, promptset, body)
+	case PROMPTS_GET:
+		return promptsGetHandler(ctx, id, resourceMgr, body)
+	default:
+		err := fmt.Errorf("invalid method %s", method)
+		return jsonrpc.NewError(id, jsonrpc.METHOD_NOT_FOUND, err.Error(), nil), err
+	}
+}
+
+// pingHandler handles the "ping" method by returning an empty response.
+func pingHandler(id jsonrpc.RequestId) (any, error) {
+	return jsonrpc.JSONRPCResponse{
+		Jsonrpc: jsonrpc.JSONRPC_VERSION,
+		Id:      id,
+		Result:  struct{}{},
+	}, nil
+}
+
+func toolsListHandler(id jsonrpc.RequestId, toolset tools.Toolset, body []byte) (any, error) {
+	var req ListToolsRequest
+	if err := json.Unmarshal(body, &req); err != nil {
+		err = fmt.Errorf("invalid mcp tools list request: %w", err)
+		return jsonrpc.NewError(id, jsonrpc.INVALID_REQUEST, err.Error(), nil), err
+	}
+
+	result := ListToolsResult{
+		Tools: toolset.McpManifest,
+	}
+	return jsonrpc.JSONRPCResponse{
+		Jsonrpc: jsonrpc.JSONRPC_VERSION,
+		Id:      id,
+		Result:  result,
+	}, nil
+}
+
+// toolsCallHandler generate a response for tools call.
+func toolsCallHandler(ctx context.Context, id jsonrpc.RequestId, resourceMgr *resources.ResourceManager, body []byte, header http.Header) (any, error) {
+	authServices := resourceMgr.GetAuthServiceMap()
+
+	// retrieve logger from context
+	logger, err := util.LoggerFromContext(ctx)
+	if err != nil {
+		return jsonrpc.NewError(id, jsonrpc.INTERNAL_ERROR, err.Error(), nil), err
+	}
+
+	var req CallToolRequest
+	if err = json.Unmarshal(body, &req); err != nil {
+		err = fmt.Errorf("invalid mcp tools call request: %w", err)
+		return jsonrpc.NewError(id, jsonrpc.INVALID_REQUEST, err.Error(), nil), err
+	}
+
+	toolName := req.Params.Name
+	toolArgument := req.Params.Arguments
+	logger.DebugContext(ctx, fmt.Sprintf("tool name: %s", toolName))
+	tool, ok := resourceMgr.GetTool(toolName)
+	if !ok {
+		err = fmt.Errorf("invalid tool name: tool with name %q does not exist", toolName)
+		return jsonrpc.NewError(id, jsonrpc.INVALID_PARAMS, err.Error(), nil), err
+	}
+
+	// Get access token
+	authTokenHeadername, err := tool.GetAuthTokenHeaderName(resourceMgr)
+	if err != nil {
+		errMsg := fmt.Errorf("error during invocation: %w", err)
+		return jsonrpc.NewError(id, jsonrpc.INTERNAL_ERROR, errMsg.Error(), nil), errMsg
+	}
+	accessToken := tools.AccessToken(header.Get(authTokenHeadername))
+
+	// Check if this specific tool requires the standard authorization header
+	clientAuth, err := tool.RequiresClientAuthorization(resourceMgr)
+	if err != nil {
+		errMsg := fmt.Errorf("error during invocation: %w", err)
+		return jsonrpc.NewError(id, jsonrpc.INTERNAL_ERROR, errMsg.Error(), nil), errMsg
+	}
+	if clientAuth {
+		if accessToken == "" {
+			return jsonrpc.NewError(id, jsonrpc.INVALID_REQUEST, "missing access token in the 'Authorization' header", nil), util.ErrUnauthorized
+		}
+	}
+
+	// marshal arguments and decode it using decodeJSON instead to prevent loss between floats/int.
+	aMarshal, err := json.Marshal(toolArgument)
+	if err != nil {
+		err = fmt.Errorf("unable to marshal tools argument: %w", err)
+		return jsonrpc.NewError(id, jsonrpc.INTERNAL_ERROR, err.Error(), nil), err
+	}
+
+	var data map[string]any
+	if err = util.DecodeJSON(bytes.NewBuffer(aMarshal), &data); err != nil {
+		err = fmt.Errorf("unable to decode tools argument: %w", err)
+		return jsonrpc.NewError(id, jsonrpc.INTERNAL_ERROR, err.Error(), nil), err
+	}
+
+	// Tool authentication
+	// claimsFromAuth maps the name of the authservice to the claims retrieved from it.
+	claimsFromAuth := make(map[string]map[string]any)
+
+	// if using stdio, header will be nil and auth will not be supported
+	if header != nil {
+		for _, aS := range authServices {
+			claims, err := aS.GetClaimsFromHeader(ctx, header)
+			if err != nil {
+				logger.DebugContext(ctx, err.Error())
+				continue
+			}
+			if claims == nil {
+				// authService not present in header
+				continue
+			}
+			claimsFromAuth[aS.GetName()] = claims
+		}
+	}
+
+	// Tool authorization check
+	verifiedAuthServices := make([]string, len(claimsFromAuth))
+	i := 0
+	for k := range claimsFromAuth {
+		verifiedAuthServices[i] = k
+		i++
+	}
+
+	// Check if any of the specified auth services is verified
+	isAuthorized := tool.Authorized(verifiedAuthServices)
+	if !isAuthorized {
+		err = fmt.Errorf("unauthorized Tool call: Please make sure your specify correct auth headers: %w", util.ErrUnauthorized)
+		return jsonrpc.NewError(id, jsonrpc.INVALID_REQUEST, err.Error(), nil), err
+	}
+	logger.DebugContext(ctx, "tool invocation authorized")
+
+	params, err := tool.ParseParams(data, claimsFromAuth)
+	if err != nil {
+		err = fmt.Errorf("provided parameters were invalid: %w", err)
+		return jsonrpc.NewError(id, jsonrpc.INVALID_PARAMS, err.Error(), nil), err
+	}
+	logger.DebugContext(ctx, fmt.Sprintf("invocation params: %s", params))
+
+	// run tool invocation and generate response.
+	results, err := tool.Invoke(ctx, resourceMgr, params, accessToken)
+	if err != nil {
+		errStr := err.Error()
+		// Missing authService tokens.
+		if errors.Is(err, util.ErrUnauthorized) {
+			return jsonrpc.NewError(id, jsonrpc.INVALID_REQUEST, err.Error(), nil), err
+		}
+		// Upstream auth error
+		if strings.Contains(errStr, "Error 401") || strings.Contains(errStr, "Error 403") {
+			if clientAuth {
+				// Error with client credentials should pass down to the client
+				return jsonrpc.NewError(id, jsonrpc.INVALID_REQUEST, err.Error(), nil), err
+			}
+			// Auth error with ADC should raise internal 500 error
+			return jsonrpc.NewError(id, jsonrpc.INTERNAL_ERROR, err.Error(), nil), err
+		}
+		text := TextContent{
+			Type: "text",
+			Text: err.Error(),
+		}
+		return jsonrpc.JSONRPCResponse{
+			Jsonrpc: jsonrpc.JSONRPC_VERSION,
+			Id:      id,
+			Result:  CallToolResult{Content: []TextContent{text}, IsError: true},
+		}, nil
+	}
+
+	content := make([]TextContent, 0)
+
+	sliceRes, ok := results.([]any)
+	if !ok {
+		sliceRes = []any{results}
+	}
+
+	for _, d := range sliceRes {
+		text := TextContent{Type: "text"}
+		dM, err := json.Marshal(d)
+		if err != nil {
+			text.Text = fmt.Sprintf("fail to marshal: %s, result: %s", err, d)
+		} else {
+			text.Text = string(dM)
+		}
+		content = append(content, text)
+	}
+
+	return jsonrpc.JSONRPCResponse{
+		Jsonrpc: jsonrpc.JSONRPC_VERSION,
+		Id:      id,
+		Result:  CallToolResult{Content: content},
+	}, nil
+}
+
+// promptsListHandler handles the "prompts/list" method.
+func promptsListHandler(ctx context.Context, id jsonrpc.RequestId, promptset prompts.Promptset, body []byte) (any, error) {
+	// retrieve logger from context
+	logger, err := util.LoggerFromContext(ctx)
+	if err != nil {
+		return jsonrpc.NewError(id, jsonrpc.INTERNAL_ERROR, err.Error(), nil), err
+	}
+	logger.DebugContext(ctx, "handling prompts/list request")
+
+	var req ListPromptsRequest
+	if err := json.Unmarshal(body, &req); err != nil {
+		err = fmt.Errorf("invalid mcp prompts list request: %w", err)
+		return jsonrpc.NewError(id, jsonrpc.INVALID_REQUEST, err.Error(), nil), err
+	}
+
+	result := ListPromptsResult{
+		Prompts: promptset.McpManifest,
+	}
+	logger.DebugContext(ctx, fmt.Sprintf("returning %d prompts", len(promptset.McpManifest)))
+	return jsonrpc.JSONRPCResponse{
+		Jsonrpc: jsonrpc.JSONRPC_VERSION,
+		Id:      id,
+		Result:  result,
+	}, nil
+}
+
+// promptsGetHandler handles the "prompts/get" method.
+func promptsGetHandler(ctx context.Context, id jsonrpc.RequestId, resourceMgr *resources.ResourceManager, body []byte) (any, error) {
+	// retrieve logger from context
+	logger, err := util.LoggerFromContext(ctx)
+	if err != nil {
+		return jsonrpc.NewError(id, jsonrpc.INTERNAL_ERROR, err.Error(), nil), err
+	}
+	logger.DebugContext(ctx, "handling prompts/get request")
+
+	var req GetPromptRequest
+	if err := json.Unmarshal(body, &req); err != nil {
+		err = fmt.Errorf("invalid mcp prompts/get request: %w", err)
+		return jsonrpc.NewError(id, jsonrpc.INVALID_REQUEST, err.Error(), nil), err
+	}
+
+	promptName := req.Params.Name
+	logger.DebugContext(ctx, fmt.Sprintf("prompt name: %s", promptName))
+	prompt, ok := resourceMgr.GetPrompt(promptName)
+	if !ok {
+		err := fmt.Errorf("prompt with name %q does not exist", promptName)
+		return jsonrpc.NewError(id, jsonrpc.INVALID_PARAMS, err.Error(), nil), err
+	}
+
+	// Parse the arguments provided in the request.
+	argValues, err := prompt.ParseArgs(req.Params.Arguments, nil)
+	if err != nil {
+		err = fmt.Errorf("invalid arguments for prompt %q: %w", promptName, err)
+		return jsonrpc.NewError(id, jsonrpc.INVALID_PARAMS, err.Error(), nil), err
+	}
+	logger.DebugContext(ctx, fmt.Sprintf("parsed args: %v", argValues))
+
+	// Substitute the argument values into the prompt's messages.
+	substituted, err := prompt.SubstituteParams(argValues)
+	if err != nil {
+		err = fmt.Errorf("error substituting params for prompt %q: %w", promptName, err)
+		return jsonrpc.NewError(id, jsonrpc.INTERNAL_ERROR, err.Error(), nil), err
+	}
+
+	// Cast the result to the expected []prompts.Message type.
+	substitutedMessages, ok := substituted.([]prompts.Message)
+	if !ok {
+		err = fmt.Errorf("internal error: SubstituteParams returned unexpected type")
+		return jsonrpc.NewError(id, jsonrpc.INTERNAL_ERROR, err.Error(), nil), err
+	}
+	logger.DebugContext(ctx, "substituted params successfully")
+
+	// Format the response messages into the required structure.
+	promptMessages := make([]PromptMessage, len(substitutedMessages))
+	for i, msg := range substitutedMessages {
+		promptMessages[i] = PromptMessage{
+			Role: msg.Role,
+			Content: TextContent{
+				Type: "text",
+				Text: msg.Content,
+			},
+		}
+	}
+
+	result := GetPromptResult{
+		Description: prompt.Manifest().Description,
+		Messages:    promptMessages,
+	}
+
+	return jsonrpc.JSONRPCResponse{
+		Jsonrpc: jsonrpc.JSONRPC_VERSION,
+		Id:      id,
+		Result:  result,
+	}, nil
+}

internal/server/mcp/v20251125/types.go

@@ -0,0 +1,219 @@
+// 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 v20251125
+
+import (
+	"github.com/googleapis/genai-toolbox/internal/prompts"
+	"github.com/googleapis/genai-toolbox/internal/server/mcp/jsonrpc"
+	"github.com/googleapis/genai-toolbox/internal/tools"
+)
+
+// SERVER_NAME is the server name used in Implementation.
+const SERVER_NAME = "Toolbox"
+
+// PROTOCOL_VERSION is the version of the MCP protocol in this package.
+const PROTOCOL_VERSION = "2025-11-25"
+
+// methods that are supported.
+const (
+	PING         = "ping"
+	TOOLS_LIST   = "tools/list"
+	TOOLS_CALL   = "tools/call"
+	PROMPTS_LIST = "prompts/list"
+	PROMPTS_GET  = "prompts/get"
+)
+
+/* Empty result */
+
+// EmptyResult represents a response that indicates success but carries no data.
+type EmptyResult jsonrpc.Result
+
+/* Pagination */
+
+// Cursor is an opaque token used to represent a cursor for pagination.
+type Cursor string
+
+type PaginatedRequest struct {
+	jsonrpc.Request
+	Params struct {
+		// An opaque token representing the current pagination position.
+		// If provided, the server should return results starting after this cursor.
+		Cursor Cursor `json:"cursor,omitempty"`
+	} `json:"params,omitempty"`
+}
+
+type PaginatedResult struct {
+	jsonrpc.Result
+	// An opaque token representing the pagination position after the last returned result.
+	// If present, there may be more results available.
+	NextCursor Cursor `json:"nextCursor,omitempty"`
+}
+
+/* Tools */
+
+// Sent from the client to request a list of tools the server has.
+type ListToolsRequest struct {
+	PaginatedRequest
+}
+
+// The server's response to a tools/list request from the client.
+type ListToolsResult struct {
+	PaginatedResult
+	Tools []tools.McpManifest `json:"tools"`
+}
+
+// Used by the client to invoke a tool provided by the server.
+type CallToolRequest struct {
+	jsonrpc.Request
+	Params struct {
+		Name      string         `json:"name"`
+		Arguments map[string]any `json:"arguments,omitempty"`
+	} `json:"params,omitempty"`
+}
+
+// The sender or recipient of messages and data in a conversation.
+type Role string
+
+const (
+	RoleUser      Role = "user"
+	RoleAssistant Role = "assistant"
+)
+
+// Base for objects that include optional annotations for the client.
+// The client can use annotations to inform how objects are used or displayed
+type Annotated struct {
+	Annotations *struct {
+		// Describes who the intended customer of this object or data is.
+		// It can include multiple entries to indicate content useful for multiple
+		// audiences (e.g., `["user", "assistant"]`).
+		Audience []Role `json:"audience,omitempty"`
+		// Describes how important this data is for operating the server.
+		//
+		// A value of 1 means "most important," and indicates that the data is
+		// effectively required, while 0 means "least important," and indicates that
+		// the data is entirely optional.
+		//
+		// @TJS-type number
+		// @minimum 0
+		// @maximum 1
+		Priority float64 `json:"priority,omitempty"`
+	} `json:"annotations,omitempty"`
+}
+
+// TextContent represents text provided to or from an LLM.
+type TextContent struct {
+	Annotated
+	Type string `json:"type"`
+	// The text content of the message.
+	Text string `json:"text"`
+}
+
+// The server's response to a tool call.
+//
+// Any errors that originate from the tool SHOULD be reported inside the result
+// object, with `isError` set to true, _not_ as an MCP protocol-level error
+// response. Otherwise, the LLM would not be able to see that an error occurred
+// and self-correct.
+//
+// However, any errors in _finding_ the tool, an error indicating that the
+// server does not support tool calls, or any other exceptional conditions,
+// should be reported as an MCP error response.
+type CallToolResult struct {
+	jsonrpc.Result
+	// Could be either a TextContent, ImageContent, or EmbeddedResources
+	// For Toolbox, we will only be sending TextContent
+	Content []TextContent `json:"content"`
+	// Whether the tool call ended in an error.
+	// If not set, this is assumed to be false (the call was successful).
+	//
+	// Any errors that originate from the tool SHOULD be reported inside the result
+	// object, with `isError` set to true, _not_ as an MCP protocol-level error
+	// response. Otherwise, the LLM would not be able to see that an error occurred
+	// and self-correct.
+	//
+	// However, any errors in _finding_ the tool, an error indicating that the
+	// server does not support tool calls, or any other exceptional conditions,
+	// should be reported as an MCP error response.
+	IsError bool `json:"isError,omitempty"`
+	// An optional JSON object that represents the structured result of the tool call.
+	StructuredContent map[string]any `json:"structuredContent,omitempty"`
+}
+
+// Additional properties describing a Tool to clients.
+//
+// NOTE: all properties in ToolAnnotations are **hints**.
+// They are not guaranteed to provide a faithful description of
+// tool behavior (including descriptive properties like `title`).
+//
+// Clients should never make tool use decisions based on ToolAnnotations
+// received from untrusted servers.
+type ToolAnnotations struct {
+	// A human-readable title for the tool.
+	Title string `json:"title,omitempty"`
+	// If true, the tool does not modify its environment.
+	// Default: false
+	ReadOnlyHint bool `json:"readOnlyHint,omitempty"`
+	// If true, the tool may perform destructive updates to its environment.
+	// If false, the tool performs only additive updates.
+	// (This property is meaningful only when `readOnlyHint == false`)
+	// Default: true
+	DestructiveHint bool `json:"destructiveHint,omitempty"`
+	// If true, calling the tool repeatedly with the same arguments
+	// will have no additional effect on the its environment.
+	// (This property is meaningful only when `readOnlyHint == false`)
+	// Default: false
+	IdempotentHint bool `json:"idempotentHint,omitempty"`
+	// If true, this tool may interact with an "open world" of external
+	// entities. If false, the tool's domain of interaction is closed.
+	// For example, the world of a web search tool is open, whereas that
+	// of a memory tool is not.
+	// Default: true
+	OpenWorldHint bool `json:"openWorldHint,omitempty"`
+}
+
+/* Prompts */
+
+// Sent from the client to request a list of prompts the server has.
+type ListPromptsRequest struct {
+	PaginatedRequest
+}
+
+// The server's response to a prompts/list request from the client.
+type ListPromptsResult struct {
+	PaginatedResult
+	Prompts []prompts.McpManifest `json:"prompts"`
+}
+
+// Used by the client to get a prompt provided by the server.
+type GetPromptRequest struct {
+	jsonrpc.Request
+	Params struct {
+		Name      string         `json:"name"`
+		Arguments map[string]any `json:"arguments,omitempty"`
+	} `json:"params"`
+}
+
+// The server's response to a prompts/get request from the client.
+type GetPromptResult struct {
+	jsonrpc.Result
+	Description string          `json:"description,omitempty"`
+	Messages    []PromptMessage `json:"messages"`
+}
+
+// Describes a message returned as part of a prompt.
+type PromptMessage struct {
+	Role    string      `json:"role"`
+	Content TextContent `json:"content"`
+}

internal/server/mcp_test.go

@@ -37,6 +37,7 @@ const jsonrpcVersion = "2.0"
 const protocolVersion20241105 = "2024-11-05"
 const protocolVersion20250326 = "2025-03-26"
 const protocolVersion20250618 = "2025-06-18"
+const protocolVersion20251125 = "2025-11-25"
 const serverName = "Toolbox"
 
 var basicInputSchema = map[string]any{
@@ -485,6 +486,23 @@ func TestMcpEndpoint(t *testing.T) {
 				},
 			},
 		},
+		{
+			name:     "version 2025-11-25",
+			protocol: protocolVersion20251125,
+			idHeader: false,
+			initWant: map[string]any{
+				"jsonrpc": "2.0",
+				"id":      "mcp-initialize",
+				"result": map[string]any{
+					"protocolVersion": "2025-11-25",
+					"capabilities": map[string]any{
+						"tools":   map[string]any{"listChanged": false},
+						"prompts": map[string]any{"listChanged": false},
+					},
+					"serverInfo": map[string]any{"name": serverName, "version": fakeVersionString},
+				},
+			},
+		},
 	}
 	for _, vtc := range versTestCases {
 		t.Run(vtc.name, func(t *testing.T) {
@@ -494,8 +512,7 @@ func TestMcpEndpoint(t *testing.T) {
 			if sessionId != "" {
 				header["Mcp-Session-Id"] = sessionId
 			}
-
-			if vtc.protocol == protocolVersion20250618 {
+			if vtc.protocol != protocolVersion20241105 && vtc.protocol != protocolVersion20250326 {
 				header["MCP-Protocol-Version"] = vtc.protocol
 			}
 

tests/dataplex/dataplex_integration_test.go

@@ -85,13 +85,66 @@ func initDataplexConnection(ctx context.Context) (*dataplex.CatalogClient, error
 	return client, nil
 }
 
+// cleanupOldAspectTypes Deletes AspectTypes older than the specified duration.
+func cleanupOldAspectTypes(t *testing.T, ctx context.Context, client *dataplex.CatalogClient, oldThreshold time.Duration) {
+	parent := fmt.Sprintf("projects/%s/locations/us", DataplexProject)
+	olderThanTime := time.Now().Add(-oldThreshold)
+
+	listReq := &dataplexpb.ListAspectTypesRequest{
+		Parent:   parent,
+		PageSize: 100,               // Fetch up to 100 items
+		OrderBy:  "create_time asc", // Order by creation time
+	}
+
+	const maxDeletes = 8 // Explicitly limit the number of deletions
+	it := client.ListAspectTypes(ctx, listReq)
+	var aspectTypesToDelete []string
+	for len(aspectTypesToDelete) < maxDeletes {
+		aspectType, err := it.Next()
+		if err == iterator.Done {
+			break
+		}
+		if err != nil {
+			t.Logf("Warning: Failed to list aspect types during cleanup: %v", err)
+			return
+		}
+		// Perform time-based filtering in memory
+		if aspectType.CreateTime != nil {
+			createTime := aspectType.CreateTime.AsTime()
+			if createTime.Before(olderThanTime) {
+				aspectTypesToDelete = append(aspectTypesToDelete, aspectType.GetName())
+			}
+		} else {
+			t.Logf("Warning: AspectType %s has no CreateTime", aspectType.GetName())
+		}
+	}
+	if len(aspectTypesToDelete) == 0 {
+		t.Logf("cleanupOldAspectTypes: No aspect types found older than %s to delete.", oldThreshold.String())
+		return
+	}
+
+	for _, aspectTypeName := range aspectTypesToDelete {
+		deleteReq := &dataplexpb.DeleteAspectTypeRequest{Name: aspectTypeName}
+		op, err := client.DeleteAspectType(ctx, deleteReq)
+		if err != nil {
+			t.Logf("Warning: Failed to delete aspect type %s: %v", aspectTypeName, err)
+			continue // Skip to the next item if initiation fails
+		}
+
+		if err := op.Wait(ctx); err != nil {
+			t.Logf("Warning: Failed to delete aspect type %s, operation error: %v", aspectTypeName, err)
+		} else {
+			t.Logf("cleanupOldAspectTypes: Successfully deleted %s", aspectTypeName)
+		}
+	}
+}
+
 func TestDataplexToolEndpoints(t *testing.T) {
 	sourceConfig := getDataplexVars(t)
 	ctx, cancel := context.WithTimeout(context.Background(), 3*time.Minute)
 	defer cancel()
 
 	var args []string
-
 	bigqueryClient, err := initBigQueryConnection(ctx, DataplexProject)
 	if err != nil {
 		t.Fatalf("unable to create Cloud SQL connection pool: %s", err)
@@ -102,6 +155,9 @@ func TestDataplexToolEndpoints(t *testing.T) {
 		t.Fatalf("unable to create Dataplex connection: %s", err)
 	}
 
+	// Cleanup older aspecttypes
+	cleanupOldAspectTypes(t, ctx, dataplexClient, 1*time.Hour)
+
 	// create resources with UUID
 	datasetName := fmt.Sprintf("temp_toolbox_test_%s", strings.ReplaceAll(uuid.New().String(), "-", ""))
 	tableName := fmt.Sprintf("param_table_%s", strings.ReplaceAll(uuid.New().String(), "-", ""))