Function handleFetchUrl

handleFetchUrl(
    id: string | number | null,
    url: string | undefined,
    fetchImpl?: {
        (input: URL | RequestInfo, init?: RequestInit): Promise<Response>;
        (input: string | URL | Request, init?: RequestInit): Promise<Response>;
    },
): Promise<JsonRpcSuccess | JsonRpcError>
Execute the fetch_url tool call.

Only URLs matching the IMF SDMX 3.0 allowlist are permitted. Non-matching or malformed URLs receive a JSON-RPC error response; HTTP errors and network failures also surface as errors.
Parameters
- id: string | number | null
  Request id to echo.
- url: string | undefined
  URL to fetch.
- fetchImpl: {
  (input: URL | RequestInfo, init?: RequestInit): Promise<Response>;
  (input: string | URL | Request, init?: RequestInit): Promise<Response>;
  } = globalThis.fetch
  Injectable fetch implementation (defaults to global).
  - (input: URL | RequestInfo, init?: RequestInit): Promise<Response>
    MDN Reference
    
    Parameters
    input: URL | RequestInfo
    Optionalinit: RequestInit
    Returns Promise<Response>
    (input: string | URL | Request, init?: RequestInit): Promise<Response>
    MDN Reference
    
    Parameters
    input: string | URL | Request
    Optionalinit: RequestInit
    Returns Promise<Response>
Returns Promise<JsonRpcSuccess | JsonRpcError>
JSON-RPC success or error.
- Defined in mcp/fetch-proxy-server.ts:191