All servers · Scraping & browsing · Health & fitness

AtCoder MCP Server

io.github.ketherworks/atcoder · v0.1.0

No registry update 90+ days

Measured by MCP Station

Last check	Reachable
Checked at	—
Check success 7 / 30 days	—
First-try success 30 days	—
Median response	—
Lookups 30 days	—
Authentication	No auth
MCP version	2025-06-18
Rank score	—
Declared risk	Read-only (all tools declare readOnlyHint)
Capabilities declared	tools
Tool definitions	4 tools · with description 100% · input schema is an object 100% · read/destructive hints 100%

Search AtCoder problems and fetch public problem statements through MCP.

streamable-http · https://api.ksrnyx.top/oj-mcp/atcoder/mcp

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

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

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.

Repository · JSON · Text for agents · Registry updated 2026-07-21