Access LeetCode Data via MCP

mcp-server-leetcode (currently versioned 1.0.1) is an MCP server that gives AI assistants access to LeetCode's problem catalog, user profiles, submission history, and contest data, described by its own README as providing fast access to the LeetCode API with full support for MCP tools and resources. It exposes both MCP tools/resources and a programmable JavaScript API (LeetCodeService) for the same functionality, so it can be embedded directly in a Node.js application instead of only being driven through an MCP client.

Use it when you want an AI assistant to fetch the daily LeetCode challenge, search problems by tag or difficulty, look up a specific problem's details, check a user's public profile or submission history, or pull contest rankings and details. Do not use it for actions LeetCode itself doesn't expose publicly, like submitting solutions or accessing private account data - this server only reads publicly available problem, user, and contest information.

Problem tools: get-daily-challenge (no parameters), get-problem (by titleSlug), search-problems (filter by tags, difficulty, with limit/skip pagination).
User tools: get-user-profile (by username), get-user-submissions (by username, with a limit), get-user-contest-ranking (by username).
Contest tools: get-contest-details (by contestSlug).

It also exposes MCP resources directly: leetcode://daily-challenge, leetcode://problem/{titleSlug}, leetcode://problems{?tags,difficulty,limit,skip}, leetcode://user/{username}/profile, leetcode://user/{username}/submissions{?limit}, and leetcode://user/{username}/contest-ranking.

As a library, it can be used programmatically:

import { LeetCodeService } from '@mcpfun/mcp-server-leetcode';
const leetcodeService = new LeetCodeService();
const dailyChallenge = await leetcodeService.getDailyChallenge();
const problems = await leetcodeService.searchProblems({ difficulty: 'MEDIUM', tags: 'array+dynamic-programming' });

Install automatically for Claude Desktop via Smithery:

npx -y @smithery/cli install @doggybee/mcp-server-leetcode --client claude

Or install globally and run directly:

npm install -g @mcpfun/mcp-server-leetcode
mcp-server-leetcode

Then register it in claude_desktop_config.json:

{
  "mcpServers": {
    "leetcode": {
      "command": "mcp-server-leetcode"
    }
  }
}

For local development, clone the repo, run npm install, and use npm run dev or npm run build, pointing the config's command/args at node /path/to/dist/index.js.

The server also supports a plain local (non-global) npm install @mcpfun/mcp-server-leetcode, useful when embedding it as a project dependency rather than a system-wide CLI tool. The project describes itself as inspired by the community alfa-leetcode-api project, and points to the Model Context Protocol specification and Claude for Desktop's MCP support as the two related projects it builds on and integrates with. It's licensed MIT.

Developers and competitive programmers who want an AI assistant to pull LeetCode problems, daily challenges, and user or contest stats into a conversation instead of switching to the LeetCode website.