io.github.ketherworks/atcoder

up checked 2026-11-11T11:37:27.219Z

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Publisher-provided title

AtCoder MCP Server

Publisher-provided description

Search AtCoder problems and fetch public problem statements through MCP.

Summary by lookupd

Look up AtCoder problems by exact contest/task id or URL and fetch public problem statements, samples, and limits for an agent.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http atcoder https://api.ksrnyx.top/oj-mcp/atcoder/mcp

Codex, remote (streamable-http)

codex mcp add atcoder --url https://api.ksrnyx.top/oj-mcp/atcoder/mcp

Cursor, remote (streamable-http) → .cursor/mcp.json

{
  "mcpServers": {
    "atcoder": {
      "url": "https://api.ksrnyx.top/oj-mcp/atcoder/mcp"
    }
  }
}

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Publisher-provided text

oj_capabilities Report the audited anonymous AtCoder read surface and explicitly unsupported operations.
oj_health Report local readiness and the latest observed AtCoder page-read status without probing upstream.
oj_fetch_problem Fetch one public problem statement from an exact contest/task pair or canonical atcoder.jp task URL. Returns sanitized HTML with preserved math, samples, limits
oj_search_problems Resolve exactly one contest/task id, atcoder:contest/task id, or canonical task URL. Free-text and catalog crawling are not supported.

Shows this live status and links here; updates hourly.

[![lookupd status](https://lookupd.com/badge/io.github.ketherworks/atcoder.svg)](https://lookupd.com/servers/io.github.ketherworks/atcoder)