chore(mcp): adopt native SDK types after @modelcontextprotocol/sdk 1.25.3 bump

Replace hand-written schema/annotation shapes with the SDK's exported
Tool, JSONRPCResultResponse, and Tool['annotations'] types so changes
upstream flow through automatically.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: waleedlatif1

apps/sim/app/api/mcp/serve/[serverId]/route.ts

@@ -10,9 +10,10 @@ import {
   isJSONRPCRequest,
   type JSONRPCError,
   type JSONRPCMessage,
-  type JSONRPCResponse,
+  type JSONRPCResultResponse,
   type ListToolsResult,
   type RequestId,
+  type Tool,
 } from '@modelcontextprotocol/sdk/types.js'
 import { db } from '@sim/db'
 import { workflow, workflowMcpServer, workflowMcpTool, workspace } from '@sim/db/schema'
@@ -41,11 +42,11 @@ interface ExecuteAuthContext {
   apiKey?: string | null
 }
 
-function createResponse(id: RequestId, result: unknown): JSONRPCResponse {
+function createResponse(id: RequestId, result: unknown): JSONRPCResultResponse {
   return {
     jsonrpc: '2.0',
     id,
-    result: result as JSONRPCResponse['result'],
+    result: result as JSONRPCResultResponse['result'],
   }
 }
 
@@ -235,11 +236,7 @@ async function handleToolsList(id: RequestId, serverId: string): Promise<NextRes
 
     const result: ListToolsResult = {
       tools: tools.map((tool) => {
-        const schema = tool.parameterSchema as {
-          type?: string
-          properties?: Record<string, unknown>
-          required?: string[]
-        } | null
+        const schema = tool.parameterSchema as Partial<Tool['inputSchema']> | null
         return {
           name: tool.toolName,
           description: tool.toolDescription || `Execute workflow: ${tool.toolName}`,

apps/sim/lib/copilot/tools/mcp/definitions.ts

@@ -1,22 +1,19 @@
-export type ToolAnnotations = {
-  readOnlyHint?: boolean
-  destructiveHint?: boolean
-  idempotentHint?: boolean
-  openWorldHint?: boolean
-}
+import type { Tool } from '@modelcontextprotocol/sdk/types.js'
+
+export type ToolAnnotations = NonNullable<Tool['annotations']>
 
 export type DirectToolDef = {
   name: string
   description: string
-  inputSchema: { type: 'object'; properties?: Record<string, unknown>; required?: string[] }
+  inputSchema: Tool['inputSchema']
   toolId: string
   annotations?: ToolAnnotations
 }
 
 export type SubagentToolDef = {
   name: string
   description: string
-  inputSchema: { type: 'object'; properties?: Record<string, unknown>; required?: string[] }
+  inputSchema: Tool['inputSchema']
   agentId: string
   annotations?: ToolAnnotations
 }

apps/sim/lib/mcp/client.ts

@@ -97,9 +97,7 @@ export class McpClient {
         version: '1.0.0',
       },
       {
-        capabilities: {
-          tools: {},
-        },
+        capabilities: {},
       }
     )
   }
@@ -261,21 +259,11 @@ export class McpClient {
     }
   }
 
-  /**
-   * Check if server has capability
-   */
-  hasCapability(capability: string): boolean {
-    const serverCapabilities = this.client.getServerCapabilities()
-    return !!serverCapabilities?.[capability]
-  }
-
   /**
    * Check if the server declared `capabilities.tools.listChanged: true` during initialization.
    */
   hasListChangedCapability(): boolean {
-    const caps = this.client.getServerCapabilities()
-    const toolsCap = caps?.tools as Record<string, unknown> | undefined
-    return !!toolsCap?.listChanged
+    return !!this.client.getServerCapabilities()?.tools?.listChanged
   }
 
   /**