get-stations-code-in-city
Find all railway stations and their codes in a Chinese city to simplify ticket booking and travel planning on 12306.
Instructions
通过中文城市名查询该城市 所有 火车站的名称及其对应的 station_code，结果是一个包含多个车站信息的列表。
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| city | Yes | 中文城市名称，例如："北京", "上海" |
Implementation Reference
- src/index.ts:847-858 (handler)Handler function that retrieves all stations in the given city from precomputed CITY_STATIONS data and returns them as a JSON string in the response content, or an error if the city is not found.
async ({ city }) => { if (!(city in CITY_STATIONS)) { return { content: [{ type: 'text', text: 'Error: City not found. ' }], }; } return { content: [ { type: 'text', text: JSON.stringify(CITY_STATIONS[city]) }, ], }; } - src/index.ts:844-846 (schema)Input schema defined using Zod, specifying a required 'city' parameter as a string with description.
{ city: z.string().describe('中文城市名称，例如："北京", "上海"'), }, - src/index.ts:841-859 (registration)Registration of the tool using McpServer's server.tool() method, providing name, description, input schema, and handler.
server.tool( 'get-stations-code-in-city', '通过中文城市名查询该城市 **所有** 火车站的名称及其对应的 `station_code`，结果是一个包含多个车站信息的列表。', { city: z.string().describe('中文城市名称，例如："北京", "上海"'), }, async ({ city }) => { if (!(city in CITY_STATIONS)) { return { content: [{ type: 'text', text: 'Error: City not found. ' }], }; } return { content: [ { type: 'text', text: JSON.stringify(CITY_STATIONS[city]) }, ], }; } ); - src/index.ts:48-67 (helper)Precomputed CITY_STATIONS map from city name to list of stations in that city ({station_code, station_name}), derived from global STATIONS data loaded earlier.
const CITY_STATIONS: Record< string, { station_code: string; station_name: string }[] > = (() => { const result: Record< string, { station_code: string; station_name: string }[] > = {}; for (const station of Object.values(STATIONS)) { const city = station.city; if (!result[city]) { result[city] = []; } result[city].push({ station_code: station.station_code, station_name: station.station_name, }); } return result; })(); //以城市名名为键，位于该城市的的所有Station列表的记录