io.github.ketherworks/atcoder

repo:https://github.com/ketherworks/atcoder-mcp-server

Search AtCoder problems and fetch public problem statements through MCP.

transport:: remote
credential class:: self-provisionable
repo:: https://github.com/ketherworks/atcoder-mcp-server

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Tools

oj_capabilities
Report the audited anonymous AtCoder read surface and explicitly unsupported operations.
shallow
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.
shallow
oj_health
Report local readiness and the latest observed AtCoder page-read status without probing upstream.
shallow
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.
shallow

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Tool count and median score across every tool in this server’s corpus — honest in a way a single cherry-picked tool’s badge wouldn’t be.

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