get_journeys

Implementation Reference

• src/index.ts:68-84 (handler)

  Handler function that fetches journeys from origin to destination using the VBB Transport API by constructing the appropriate URL and returning JSON data as text.

  async ({ from, to, departure, results }) => {
    const url = new URL("/journeys", VBB_API_BASE);
    url.searchParams.set("from", from);
    url.searchParams.set("to", to);
    if (departure) {
      url.searchParams.set("departure", departure);
    }
    if (results) {
      url.searchParams.set("results", String(results));
    }
  
    const response = await fetch(url);
    const data = await response.json();
    return {
      content: [{ type: "text", text: JSON.stringify(data, null, 2) }],
    };
  }

• src/index.ts:59-67 (schema)

  Zod input schema defining parameters for the get_journeys tool: from (origin), to (destination), optional departure time, and optional number of results.

  {
    from: z.string().describe("Origin stop ID"),
    to: z.string().describe("Destination stop ID"),
    departure: z
      .string()
      .optional()
      .describe("Departure time (e.g. tomorrow 2pm)"),
    results: z.number().optional().describe("Number of results to return"),
  },

• src/index.ts:57-85 (registration)

  Registration of the get_journeys tool on the MCP server, including name, input schema, and handler function.

  this.server.tool(
    "get_journeys",
    {
      from: z.string().describe("Origin stop ID"),
      to: z.string().describe("Destination stop ID"),
      departure: z
        .string()
        .optional()
        .describe("Departure time (e.g. tomorrow 2pm)"),
      results: z.number().optional().describe("Number of results to return"),
    },
    async ({ from, to, departure, results }) => {
      const url = new URL("/journeys", VBB_API_BASE);
      url.searchParams.set("from", from);
      url.searchParams.set("to", to);
      if (departure) {
        url.searchParams.set("departure", departure);
      }
      if (results) {
        url.searchParams.set("results", String(results));
      }
  
      const response = await fetch(url);
      const data = await response.json();
      return {
        content: [{ type: "text", text: JSON.stringify(data, null, 2) }],
      };
    }
  );