Parallels RAS MCP Server

Instructions

Implementation Reference

• src/tools/farm-settings.ts:87-106 (handler)

  The complete registration and handler implementation for ras_farm_get_version. This includes the tool registration with its schema (title, description, annotations, inputSchema) and the async handler function that calls rasClient.get('/api/farm-settings/webservice/version') to retrieve version information, returning JSON formatted data or handling errors with sanitiseError().
  server.registerTool( "ras_farm_get_version", { title: "Web Service Version", description: "Get the RAS web service (REST API) version information. Returns the " + "current API version and build number. Use this to verify the API version " + "is compatible or check which features are available.", annotations: READ_ONLY_ANNOTATIONS, inputSchema: {}, }, async () => { try { const data = await rasClient.get("/api/farm-settings/webservice/version"); return { content: [{ type: "text" as const, text: JSON.stringify(data, null, 2) }] }; } catch (err) { return { content: [{ type: "text" as const, text: sanitiseError(err, "Failed to retrieve version info") }], isError: true }; } } );
• src/tools/farm-settings.ts:87-97 (registration)

  Tool registration block defining the schema for ras_farm_get_version, including title 'Web Service Version', description, read-only annotations, and empty inputSchema object.
  server.registerTool( "ras_farm_get_version", { title: "Web Service Version", description: "Get the RAS web service (REST API) version information. Returns the " + "current API version and build number. Use this to verify the API version " + "is compatible or check which features are available.", annotations: READ_ONLY_ANNOTATIONS, inputSchema: {}, },
• src/tools/farm-settings.ts:98-105 (handler)

  The async handler function that executes the tool logic: makes GET request to /api/farm-settings/webservice/version via rasClient, formats response as JSON string, and catches errors with sanitiseError().
  async () => { try { const data = await rasClient.get("/api/farm-settings/webservice/version"); return { content: [{ type: "text" as const, text: JSON.stringify(data, null, 2) }] }; } catch (err) { return { content: [{ type: "text" as const, text: sanitiseError(err, "Failed to retrieve version info") }], isError: true }; } }
• src/client.ts:128-166 (helper)

  The rasClient.get() method used by the handler to make authenticated GET requests to the RAS API, handling lazy authentication, automatic retry on 401, and request timeouts.
  async get(path: string): Promise<unknown> { // Ensure we have a valid session if (!this.authToken) { await this.login(); } const fetchOptions = { method: "GET" as const, headers: { ...this.headers, auth_token: this.authToken!, }, signal: AbortSignal.timeout(REQUEST_TIMEOUT_MS), }; let response = await fetch(`${this.baseUrl}${path}`, fetchOptions); // Token may have expired — re-authenticate once and retry if (response.status === 401) { await this.login(); response = await fetch(`${this.baseUrl}${path}`, { ...fetchOptions, headers: { ...this.headers, auth_token: this.authToken!, }, signal: AbortSignal.timeout(REQUEST_TIMEOUT_MS), }); } if (!response.ok) { const body = await response.text(); throw new Error( `RAS API error (HTTP ${response.status}) on ${path}: ${body.substring(0, 300)}` ); } return response.json(); }
• src/client.ts:43-54 (helper)

  The sanitiseError() helper function used to sanitize error messages by removing auth tokens/passwords and truncating long responses before returning error context.
  function sanitiseError(err: unknown, context: string): string { const raw = err instanceof Error ? err.message : String(err); // Remove anything that looks like a token or password value let sanitised = raw .replace(/auth_token[=:]\s*\S+/gi, "auth_token=[REDACTED]") .replace(/password[=:]\s*\S+/gi, "password=[REDACTED]"); // Truncate excessively long API response bodies if (sanitised.length > 500) { sanitised = sanitised.substring(0, 500) + "... (truncated)"; } return `${context}: ${sanitised}`; }