ai/dist/mcp-stdio/index.mjs.map

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{"version":3,"sources":["../../src/tool/mcp/json-rpc-message.ts","../../src/tool/mcp/types.ts","../../src/error/mcp-client-error.ts","../../mcp-stdio/create-child-process.ts","../../mcp-stdio/get-environment.ts","../../mcp-stdio/mcp-stdio-transport.ts"],"sourcesContent":["import { z } from 'zod/v4';\nimport { BaseParamsSchema, RequestSchema, ResultSchema } from './types';\n\nconst JSONRPC_VERSION = '2.0';\n\nconst JSONRPCRequestSchema = z\n  .object({\n    jsonrpc: z.literal(JSONRPC_VERSION),\n    id: z.union([z.string(), z.number().int()]),\n  })\n  .merge(RequestSchema)\n  .strict();\n\nexport type JSONRPCRequest = z.infer<typeof JSONRPCRequestSchema>;\n\nconst JSONRPCResponseSchema = z\n  .object({\n    jsonrpc: z.literal(JSONRPC_VERSION),\n    id: z.union([z.string(), z.number().int()]),\n    result: ResultSchema,\n  })\n  .strict();\n\nexport type JSONRPCResponse = z.infer<typeof JSONRPCResponseSchema>;\n\nconst JSONRPCErrorSchema = z\n  .object({\n    jsonrpc: z.literal(JSONRPC_VERSION),\n    id: z.union([z.string(), z.number().int()]),\n    error: z.object({\n      code: z.number().int(),\n      message: z.string(),\n      data: z.optional(z.unknown()),\n    }),\n  })\n  .strict();\n\nexport type JSONRPCError = z.infer<typeof JSONRPCErrorSchema>;\n\nconst JSONRPCNotificationSchema = z\n  .object({\n    jsonrpc: z.literal(JSONRPC_VERSION),\n  })\n  .merge(\n    z.object({\n      method: z.string(),\n      params: z.optional(BaseParamsSchema),\n    }),\n  )\n  .strict();\n\nexport type JSONRPCNotification = z.infer<typeof JSONRPCNotificationSchema>;\n\nexport const JSONRPCMessageSchema = z.union([\n  JSONRPCRequestSchema,\n  JSONRPCNotificationSchema,\n  JSONRPCResponseSchema,\n  JSONRPCErrorSchema,\n]);\n\nexport type JSONRPCMessage = z.infer<typeof JSONRPCMessageSchema>;\n","import { z } from 'zod/v4';\nimport { JSONObject } from '@ai-sdk/provider';\nimport { FlexibleSchema, Tool } from '@ai-sdk/provider-utils';\n\nexport const LATEST_PROTOCOL_VERSION = '2025-06-18';\nexport const SUPPORTED_PROTOCOL_VERSIONS = [\n  LATEST_PROTOCOL_VERSION,\n  '2025-03-26',\n  '2024-11-05',\n];\n\nexport type ToolSchemas =\n  | Record<string, { inputSchema: FlexibleSchema<JSONObject | unknown> }>\n  | 'automatic'\n  | undefined;\n\nexport type McpToolSet<TOOL_SCHEMAS extends ToolSchemas = 'automatic'> =\n  TOOL_SCHEMAS extends Record<string, { inputSchema: FlexibleSchema<any> }>\n    ? {\n        [K in keyof TOOL_SCHEMAS]: TOOL_SCHEMAS[K] extends {\n          inputSchema: FlexibleSchema<infer INPUT>;\n        }\n          ? Tool<INPUT, CallToolResult> &\n              Required<Pick<Tool<INPUT, CallToolResult>, 'execute'>>\n          : never;\n      }\n    : McpToolSet<Record<string, { inputSchema: FlexibleSchema<unknown> }>>;\n\nconst ClientOrServerImplementationSchema = z.looseObject({\n  name: z.string(),\n  version: z.string(),\n});\n\nexport type Configuration = z.infer<typeof ClientOrServerImplementationSchema>;\n\nexport const BaseParamsSchema = z.looseObject({\n  _meta: z.optional(z.object({}).loose()),\n});\ntype BaseParams = z.infer<typeof BaseParamsSchema>;\nexport const ResultSchema = BaseParamsSchema;\n\nexport const RequestSchema = z.object({\n  method: z.string(),\n  params: z.optional(BaseParamsSchema),\n});\nexport type Request = z.infer<typeof RequestSchema>;\nexport type RequestOptions = {\n  signal?: AbortSignal;\n  timeout?: number;\n  maxTotalTimeout?: number;\n};\n\nexport type Notification = z.infer<typeof RequestSchema>;\n\nconst ServerCapabilitiesSchema = z.looseObject({\n  experimental: z.optional(z.object({}).loose()),\n  logging: z.optional(z.object({}).loose()),\n  prompts: z.optional(\n    z.looseObject({\n      listChanged: z.optional(z.boolean()),\n    }),\n  ),\n  resources: z.optional(\n    z.looseObject({\n      subscribe: z.optional(z.boolean()),\n      listChanged: z.optional(z.boolean()),\n    }),\n  ),\n  tools: z.optional(\n    z.looseObject({\n      listChanged: z.optional(z.boolean()),\n    }),\n  ),\n});\n\nexport type ServerCapabilities = z.infer<typeof ServerCapabilitiesSchema>;\n\nexport const InitializeResultSchema = ResultSchema.extend({\n  protocolVersion: z.string(),\n  capabilities: ServerCapabilitiesSchema,\n  serverInfo: ClientOrServerImplementationSchema,\n  instructions: z.optional(z.string()),\n});\nexport type InitializeResult = z.infer<typeof InitializeResultSchema>;\n\nexport type PaginatedRequest = Request & {\n  params?: BaseParams & {\n    cursor?: string;\n  };\n};\n\nconst PaginatedResultSchema = ResultSchema.extend({\n  nextCursor: z.optional(z.string()),\n});\n\nconst ToolSchema = z\n  .object({\n    name: z.string(),\n    description: z.optional(z.string()),\n    inputSchema: z\n      .object({\n        type: z.literal('object'),\n        properties: z.optional(z.object({}).loose()),\n      })\n      .loose(),\n  })\n  .loose();\nexport type MCPTool = z.infer<typeof ToolSchema>;\nexport const ListToolsResultSchema = PaginatedResultSchema.extend({\n  tools: z.array(ToolSchema),\n});\nexport type ListToolsResult = z.infer<typeof ListToolsResultSchema>;\n\nconst TextContentSchema = z\n  .object({\n    type: z.literal('text'),\n    text: z.string(),\n  })\n  .loose();\nconst ImageContentSchema = z\n  .object({\n    type: z.literal('image'),\n    data: z.base64(),\n    mimeType: z.string(),\n  })\n  .loose();\nconst ResourceContentsSchema = z\n  .object({\n    /**\n     * The URI of this resource.\n     */\n    uri: z.string(),\n    /**\n     * The MIME type of this resource, if known.\n     */\n    mimeType: z.optional(z.string()),\n  })\n  .loose();\nconst TextResourceContentsSchema = ResourceContentsSchema.extend({\n  text: z.string(),\n});\nconst BlobResourceContentsSchema = ResourceContentsSchema.extend({\n  blob: z.base64(),\n});\nconst EmbeddedResourceSchema = z\n  .object({\n    type: z.literal('resource'),\n    resource: z.union([TextResourceContentsSchema, BlobResourceContentsSchema]),\n  })\n  .loose();\n\nexport const CallToolResultSchema = ResultSchema.extend({\n  content: z.array(\n    z.union([TextContentSchema, ImageContentSchema, EmbeddedResourceSchema]),\n  ),\n  isError: z.boolean().default(false).optional(),\n}).or(\n  ResultSchema.extend({\n    toolResult: z.unknown(),\n  }),\n);\nexport type CallToolResult = z.infer<typeof CallToolResultSchema>;\n","import { AISDKError } from '@ai-sdk/provider';\n\nconst name = 'AI_MCPClientError';\nconst marker = `vercel.ai.error.${name}`;\nconst symbol = Symbol.for(marker);\n\n/**\n * An error occurred with the MCP client.\n */\nexport class MCPClientError extends AISDKError {\n  private readonly [symbol] = true;\n\n  constructor({\n    name = 'MCPClientError',\n    message,\n    cause,\n  }: {\n    name?: string;\n    message: string;\n    cause?: unknown;\n  }) {\n    super({ name, message, cause });\n  }\n\n  static isInstance(error: unknown): error is MCPClientError {\n    return AISDKError.hasMarker(error, marker);\n  }\n}\n","import { ChildProcess, spawn } from 'node:child_process';\nimport { getEnvironment } from './get-environment';\nimport { StdioConfig } from './mcp-stdio-transport';\n\nexport function createChildProcess(\n  config: StdioConfig,\n  signal: AbortSignal,\n): ChildProcess {\n  return spawn(config.command, config.args ?? [], {\n    env: getEnvironment(config.env),\n    stdio: ['pipe', 'pipe', config.stderr ?? 'inherit'],\n    shell: false,\n    signal,\n    windowsHide: globalThis.process.platform === 'win32' && isElectron(),\n    cwd: config.cwd,\n  });\n}\n\nfunction isElectron() {\n  return 'type' in globalThis.process;\n}\n","/**\n * Constructs the environment variables for the child process.\n *\n * @param customEnv - Custom environment variables to merge with default environment variables.\n * @returns The environment variables for the child process.\n */\nexport function getEnvironment(\n  customEnv?: Record<string, string>,\n): Record<string, string> {\n  const DEFAULT_INHERITED_ENV_VARS =\n    globalThis.process.platform === 'win32'\n      ? [\n          'APPDATA',\n          'HOMEDRIVE',\n          'HOMEPATH',\n          'LOCALAPPDATA',\n          'PATH',\n          'PROCESSOR_ARCHITECTURE',\n          'SYSTEMDRIVE',\n          'SYSTEMROOT',\n          'TEMP',\n          'USERNAME',\n          'USERPROFILE',\n        ]\n      : ['HOME', 'LOGNAME', 'PATH', 'SHELL', 'TERM', 'USER'];\n\n  const env: Record<string, string> = customEnv ? { ...customEnv } : {};\n\n  for (const key of DEFAULT_INHERITED_ENV_VARS) {\n    const value = globalThis.process.env[key];\n    if (value === undefined) {\n      continue;\n    }\n\n    if (value.startsWith('()')) {\n      continue;\n    }\n\n    env[key] = value;\n  }\n\n  return env;\n}\n","import type { ChildProcess, IOType } from 'node:child_process';\nimport { Stream } from 'node:stream';\nimport {\n  JSONRPCMessage,\n  JSONRPCMessageSchema,\n} from '../src/tool/mcp/json-rpc-message';\nimport { MCPTransport } from '../src/tool/mcp/mcp-transport';\nimport { MCPClientError } from '../src/error/mcp-client-error';\nimport { createChildProcess } from './create-child-process';\n\nexport interface StdioConfig {\n  command: string;\n  args?: string[];\n  env?: Record<string, string>;\n  stderr?: IOType | Stream | number;\n  cwd?: string;\n}\n\nexport class StdioMCPTransport implements MCPTransport {\n  private process?: ChildProcess;\n  private abortController: AbortController = new AbortController();\n  private readBuffer: ReadBuffer = new ReadBuffer();\n  private serverParams: StdioConfig;\n\n  onclose?: () => void;\n  onerror?: (error: unknown) => void;\n  onmessage?: (message: JSONRPCMessage) => void;\n\n  constructor(server: StdioConfig) {\n    this.serverParams = server;\n  }\n\n  async start(): Promise<void> {\n    if (this.process) {\n      throw new MCPClientError({\n        message: 'StdioMCPTransport already started.',\n      });\n    }\n\n    return new Promise((resolve, reject) => {\n      try {\n        const process = createChildProcess(\n          this.serverParams,\n          this.abortController.signal,\n        );\n\n        this.process = process;\n\n        this.process.on('error', error => {\n          if (error.name === 'AbortError') {\n            this.onclose?.();\n            return;\n          }\n\n          reject(error);\n          this.onerror?.(error);\n        });\n\n        this.process.on('spawn', () => {\n          resolve();\n        });\n\n        this.process.on('close', _code => {\n          this.process = undefined;\n          this.onclose?.();\n        });\n\n        this.process.stdin?.on('error', error => {\n          this.onerror?.(error);\n        });\n\n        this.process.stdout?.on('data', chunk => {\n          this.readBuffer.append(chunk);\n          this.processReadBuffer();\n        });\n\n        this.process.stdout?.on('error', error => {\n          this.onerror?.(error);\n        });\n      } catch (error) {\n        reject(error);\n        this.onerror?.(error);\n      }\n    });\n  }\n\n  private processReadBuffer() {\n    while (true) {\n      try {\n        const message = this.readBuffer.readMessage();\n        if (message === null) {\n          break;\n        }\n\n        this.onmessage?.(message);\n      } catch (error) {\n        this.onerror?.(error as Error);\n      }\n    }\n  }\n\n  async close(): Promise<void> {\n    this.abortController.abort();\n    this.process = undefined;\n    this.readBuffer.clear();\n  }\n\n  send(message: JSONRPCMessage): Promise<void> {\n    return new Promise(resolve => {\n      if (!this.process?.stdin) {\n        throw new MCPClientError({\n          message: 'StdioClientTransport not connected',\n        });\n      }\n\n      const json = serializeMessage(message);\n      if (this.process.stdin.write(json)) {\n        resolve();\n      } else {\n        this.process.stdin.once('drain', resolve);\n      }\n    });\n  }\n}\n\nclass ReadBuffer {\n  private buffer?: Buffer;\n\n  append(chunk: Buffer): void {\n    this.buffer = this.buffer ? 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