AtCoder MCP Server
Search AtCoder problems and fetch public problem statements through MCP.
Community: Submitted by a user or imported; check the owner before granting accessOnlineNo sign-inGlobalFreeRead-only
What it can do
What data it sees
Do you need an account
No: the server works without sign-in
Search AtCoder problems and fetch public problem statements through MCP.
Server tool list (4)
Raw names from tools/list. Only developers need these.
| 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, hashes, and source provenance. |
| 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. |