LeetCode

LeetCode MCP Server

The LeetCode MCP Server is a Model Context Protocol (MCP) server that provides seamless integration with LeetCode APIs, enabling advanced automation and intelligent interaction with LeetCode's programming problems, contests, solutions, and user data.

Features

• 🌐 Multi-site Support: Support​ both leetcode.com (Global) and leetcode.cn (China) platforms
• 📊 Problem Data Retrieval: Obtain detailed problem descriptions, constraints, examples, official editorials, and ​user-submitted solutions
• 👤 User Data Access: Retrieve user profiles, submission history, and contest performance
• 🔒 ​Private Data Access: Create and query user notes, track problem-solving progress, and analyze submission details (AC/WA analysis)
• 🔍 Advanced Search Capabilities: Filter problems by tags, difficulty levels, categories, and keywords
• 📅 Daily Challenge Access: Easily access daily challenge problems

Prerequisites

1. Node.js (v20.x or above)
2. (Optional) LeetCode session cookie for authenticated API access

Installation

Installing via Smithery

To install leetcode-mcp-server for Claude Desktop automatically via Smithery:

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

Manual Installation

# Install from npm
npm install @jinzcdev/leetcode-mcp-server -g

# Or run with Global site configuration
npx -y @jinzcdev/leetcode-mcp-server --site global

# Run with authentication (for accessing private data)
npx -y @jinzcdev/leetcode-mcp-server --site global --session <YOUR_LEETCODE_SESSION_COOKIE>

Alternatively, you can clone the repository and run it locally:

# Clone the repository
git clone https://github.com/jinzcdev/leetcode-mcp-server.git

# Navigate to the project directory
cd leetcode-mcp-server

# Build the project
npm install && npm run build

# Run the server
node build/index.js --site global

Usage

Visual Studio Code Integration

Add the following JSON configuration to your User Settings (JSON) file. Access this by pressing Ctrl/Cmd + Shift + P and searching for Preferences: Open User Settings (JSON).

Option 1: Using Environment Variables

{
  "mcp": {
    "servers": {
      "leetcode": {
        "type": "stdio",
        "command": "npx",
        "args": ["-y", "@jinzcdev/leetcode-mcp-server"],
        "env": {
          "LEETCODE_SITE": "global",
          "LEETCODE_SESSION": "<YOUR_LEETCODE_SESSION_COOKIE>"
        }
      }
    }
  }
}

Option 2: Using Command Line Arguments

{
  "mcp": {
    "servers": {
      "leetcode": {
        "type": "stdio",
        "command": "npx",
        "args": [
          "-y",
          "@jinzcdev/leetcode-mcp-server",
          "--site",
          "global",
          "--session",
          "<YOUR_LEETCODE_SESSION_COOKIE>"
        ]
      }
    }
  }
}

For LeetCode China site, modify the --site parameter to cn.

[!TIP]

The server supports the following optional environment variables:

• LEETCODE_SITE: LeetCode API endpoint ('global' or 'cn', default: 'global')
• LEETCODE_SESSION: LeetCode session cookie for authenticated API access (default: empty)

Priority Note: Command-line arguments take precedence over environment variables when both are specified. For example:

• If LEETCODE_SITE=cn is set but you run leetcode-mcp-server --site global, the server will use global.
• If LEETCODE_SESSION exists but you provide --session "new_cookie", the command-line session value will be used.

Available Tools

Problems

Tool	Global	CN	Auth Required	Description
get_daily_challenge	✅	✅	❌	Retrieves today's LeetCode Daily Challenge problem
get_problem	✅	✅	❌	Retrieves details for a specific LeetCode problem
search_problems	✅	✅	❌	Searches for LeetCode problems with multiple filter criteria

Users

Tool	Global	CN	Auth Required	Description
get_user_profile	✅	✅	❌	Retrieves profile information for a LeetCode user
get_user_contest_ranking	✅	✅	❌	Obtains contest ranking statistics for a user
get_recent_ac_submissions	✅	✅	❌	Retrieves a user's recent accepted submissions
get_recent_submissions	✅	❌	❌	Retrieves a user's recent submissions history
get_user_status	✅	✅	✅	Retrieves current user's current status
get_problem_submission_report	✅	✅	✅	Provides detailed submission analysis for a specific problem
get_problem_progress	✅	✅	✅	Retrieves current user's problem-solving progress
get_all_submissions	✅	✅	✅	Retrieves current user's submission history

Notes

Tool	Global	CN	Auth Required	Description
search_notes	❌	✅	✅	Searches for user notes with filtering options
get_note	❌	✅	✅	Retrieves notes for a specific problem by question ID
create_note	❌	✅	✅	Creates a new note for a specific problem
update_note	❌	✅	✅	Updates an existing note with new content

Solutions

Tool	Global	CN	Auth Required	Description
list_problem_solutions	✅	✅	❌	Retrieves a list of community solutions for a specific problem
get_problem_solution	✅	✅	❌	Retrieves the complete content of a specific solution

Tool Parameters

Problems

• get_daily_challenge - Retrieves today's LeetCode Daily Challenge problem with complete details

  • No parameters required

• get_problem - Retrieves details about a specific LeetCode problem

  • titleSlug: The URL slug/identifier of the problem (string, required)

• search_problems - Searches for LeetCode problems based on multiple filter criteria

  • category: Problem category filter (string, optional, default: "all-code-essentials")
  • tags: List of topic tags to filter problems by (string[], optional)
  • difficulty: Problem difficulty level filter (enum: "EASY", "MEDIUM", "HARD", optional)
  • searchKeywords: Keywords to search in problem titles and descriptions (string, optional)
  • limit: Maximum number of problems to return (number, optional, default: 10)
  • offset: Number of problems to skip (number, optional)

Users

• get_user_profile - Retrieves profile information about a LeetCode user

  • username: LeetCode username (string, required)

• get_user_contest_ranking - Retrieves a user's contest ranking information

  • username: LeetCode username (string, required)
  • attended: Whether to include only the contests the user has participated in (boolean, optional, default: true)

• get_recent_submissions - Retrieves a user's recent submissions on LeetCode Global

  • username: LeetCode username (string, required)
  • limit: Maximum number of submissions to return (number, optional, default: 10)

• get_recent_ac_submissions - Retrieves a user's recent accepted submissions

  • username: LeetCode username (string, required)
  • limit: Maximum number of submissions to return (number, optional, default: 10)

• get_user_status - Retrieves the current user's status

  • No parameters required

• get_problem_submission_report - Retrieves detailed information about a specific submission

  • id: The numerical submission ID (number, required)

• get_problem_progress - Retrieves the current user's problem-solving progress

  • offset: Number of questions to skip (number, optional, default: 0)
  • limit: Maximum number of questions to return (number, optional, default: 100)
  • questionStatus: Filter by question status (enum: "ATTEMPTED", "SOLVED", optional)
  • `difficulty

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README truncated. View full README on GitHub.