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Codeforces MCP Server

@ketherworksMCP server · External

Search Codeforces problems and inspect public problem metadata through the official Codeforces API.

v0.1.0MITTypeScript
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One address for any MCP client. No sign-in needed on this server.

What it does

  1. Reads
  2. Writes
  3. High impact

At most: only reads or looks up information.

What it costs

Free

Odel charges nothing per call. The publisher may charge for its own service.

Tools

None listed · checked 26 Sep 2026

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README1 min read

简体中文

Search official Codeforces problem metadata through a small MCP server.

Quick Start

Add the hosted server to your MCP configuration:

json
{
  "servers": {
    "codeforces": {
      "type": "http",
      "url": "https://codeforces-mcp.ksrnyx.top/mcp"
    }
  }
}

The endpoint accepts anonymous read requests. It does not need an API key, Cookie, or judge account.

Then ask:

text
Find five beginner Codeforces problems tagged implementation.

What It Can Do

ToolPurpose
oj_capabilitiesReport the available Codeforces read operations and transport.
oj_healthReport service health and the latest official API observation.
oj_search_problemsSearch the official problemset by title, id, rating, or tag.
codeforces_get_problem_metadataFetch official metadata by id, such as 158/A, 158A, or 158-A.

Run Locally

Requires Node.js 22 or newer.

bash
npm ci
npm run check
npm run build
node packages/codeforces/dist/index.js

MCP client configuration from a source checkout:

json
{
  "servers": {
    "codeforces": {
      "type": "stdio",
      "command": "node",
      "args": ["/absolute/path/packages/codeforces/dist/index.js"]
    }
  }
}

Tagged GitHub releases attach a standalone npm tarball.

Availability

  • Hosted MCP: https://codeforces-mcp.ksrnyx.top/mcp
  • Official MCP Registry: io.github.ketherworks/codeforces, described by server.json
  • Health status: see the repository homepage or call oj_health

Source and Safety

This standalone release is generated from the reviewed Competitive Programming MCP source. The release package bundles the shared OJ contract implementation, so its runtime does not depend on unpublished workspace packages.

Platform Rules

This project is unofficial and is not affiliated with or endorsed by Codeforces.

The server exposes no run or submit tool. It accepts no judge account credentials. See SECURITY.md for the security boundary and PROVENANCE.md for the canonical source revision.

Development

bash
npm ci
npm run check
npm run pack:check
npm run deploy:dry

License

Adapter source code is MIT licensed. Judge problem content and trademarks are not relicensed by this repository.

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