mcp-server-leetcode

Implementation Reference

• src/tools/problem-tools.ts:7-27 (handler)

  The complete implementation of the 'get-daily-challenge' tool, including registration with the MCP server and the inline handler function that fetches the daily challenge data from LeetCodeService, formats it as JSON text content, and handles errors.

  server.tool(
    "get-daily-challenge",
    {},
    async () => {
      try {
        const data = await leetcodeService.fetchDailyChallenge();
        return {
          content: [{ 
            type: "text", 
            text: JSON.stringify(data, null, 2)
          }]
        };
      } catch (error: unknown) {
        const errorMessage = error instanceof Error ? error.message : String(error);
        return {
          content: [{ type: "text", text: `Error: ${errorMessage}` }],
          isError: true
        };
      }
    }
  );

• src/services/leetcode-service.ts:72-74 (helper)

  Supporting helper method in LeetCodeService that executes the GraphQL query to fetch the daily challenge data.

  async fetchDailyChallenge() {
    return this.executeQuery(dailyChallengeQuery);
  }

• src/index.ts:22-22 (registration)

  Top-level registration call that invokes the function to register the 'get-daily-challenge' tool (among others) with the MCP server.

  registerProblemTools(server, leetcodeService);