PokeAPI MCP Server

import { z } from "zod"; import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js"; import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js"; const server = new McpServer({ name: "poke-api", version: "1.0.0", }); // 入力スキーマ（zod） const inputSchema = z.object({ nameOrId: z.string(), }); // タイプでポケモンを検索するための入力スキーマ const typeInputSchema = z.object({ typeName: z.string(), }); // 出力スキーマ（zod） // const outputSchema = z.object({ // name: z.string(), // id: z.number(), // height: z.number(), // weight: z.number(), // types: z.array(z.string()), // }); // POKEAPIからポケモン情報を取得 type PokeApiResponse = { name: string; id: number; height: number; weight: number; types: { type: { name: string } }[]; }; async function getPokemonInfo(nameOrId: string) { const res = await fetch( `https://pokeapi.co/api/v2/pokemon/${encodeURIComponent(nameOrId)}` ); if (!res.ok) throw new Error("Not found"); const data = (await res.json()) as PokeApiResponse; return { name: data.name, id: data.id, height: data.height, weight: data.weight, types: data.types.map((t) => t.type.name), }; } server.tool("get-pokemon-info", inputSchema.shape, async (args) => { const data = await getPokemonInfo(args.nameOrId); return { content: [ { type: "text", text: JSON.stringify(data, null, 2), }, ], }; }); // POKEAPIからタイプでポケモン一覧を取得 async function getPokemonByType(typeName: string) { const res = await fetch( `https://pokeapi.co/api/v2/type/${encodeURIComponent(typeName)}` ); if (!res.ok) throw new Error("Type not found"); const data = await res.json(); // data.pokemonは {pokemon: {name, url}, slot} の配列 return data.pokemon.map((p: any) => p.pokemon.name); } server.tool("get-pokemon-by-type", typeInputSchema.shape, async (args) => { const names = await getPokemonByType(args.typeName); return { content: [ { type: "text", text: JSON.stringify(names, null, 2), }, ], }; }); async function main() { const transport = new StdioServerTransport(); await server.connect(transport); console.error("Poke API MCP Server running on stdio"); } main().catch((e) => { console.error("Fatal error in main():", e); process.exit(1); });