LeetCode MCP Server

Instructions

Implementation Reference

• src/mcp/tools/problem-tools.ts:19-31 (handler)

  The inline async handler function for the 'get_daily_challenge' MCP tool. It fetches today's LeetCode Daily Challenge using the injected leetcodeService and returns formatted JSON content including date and problem details.
  const data = await this.leetcodeService.fetchDailyChallenge(); return { content: [ { type: "text", text: JSON.stringify({ date: new Date().toISOString().split("T")[0], problem: data }) } ] }; }
• src/mcp/tools/problem-tools.ts:15-32 (registration)

  The server.tool() call that registers the 'get_daily_challenge' tool on the MCP server, specifying name, description, empty input schema, and the handler function.
  "get_daily_challenge", "Retrieves today's LeetCode Daily Challenge problem with complete details, including problem description, constraints, and examples", {}, async () => { const data = await this.leetcodeService.fetchDailyChallenge(); return { content: [ { type: "text", text: JSON.stringify({ date: new Date().toISOString().split("T")[0], problem: data }) } ] }; } );
• src/mcp/tools/problem-tools.ts:144-150 (registration)

  The registerProblemTools function exported from problem-tools.ts, which instantiates ProblemToolRegistry and triggers registration of problem tools including get_daily_challenge.
  export function registerProblemTools( server: McpServer, leetcodeService: LeetCodeBaseService ): void { const registry = new ProblemToolRegistry(server, leetcodeService); registry.registerTools(); }
• src/index.ts:93-93 (registration)

  Main entry point registration in index.ts calling registerProblemTools with the MCP server and LeetCode service instance.
  registerProblemTools(server, leetcodeService);
• src/leetcode/leetcode-global-service.ts:145-148 (helper)

  Example helper implementation of fetchDailyChallenge() in LeetCodeGlobalService (similar in CN service), wrapping the underlying API call.
  async fetchDailyChallenge(): Promise<any> { const dailyChallenge = await this.leetCodeApi.daily(); return dailyChallenge; }