io.github.ketherworks/atcoder
AtCoder MCP Server
io.github.ketherworks/atcoder costs 626 tokens of context per session. It has 4 tool definitions. That is 0.3 % of a 200k window. Measured 2026-10-03.
Search AtCoder problems and fetch public problem statements through MCP.
alive probed 2026-10-03 · HTTP 200
4tools
626tokens for the tool definitions
0.3 %of a 200k context window
1.5 sto initialize
115 msto list tools
- Endpoint
- https://api.ksrnyx.top/oj-mcp/atcoder/mcp (streamable-http)
- Host
- api.ksrnyx.top
- Protocol
- 2025-11-25
- Reports itself as
- atcoder-mcp-server 0.1.0
- Capabilities
- tools
- Instructions
- none
- Repository
- https://github.com/ketherworks/atcoder-mcp-server
- Registry
- active, updated 2026-07-21 · registry entry
- Reachable
- 2 of the last 2 probes
Most expensive tools
| Tool | Tokens | Share of this server |
|---|---|---|
| oj_fetch_problem | 342 | 55 % |
| oj_search_problems | 172 | 27 % |
| oj_health | 57 | 9 % |
| oj_capabilities | 55 | 9 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Tokens |
|---|---|---|---|---|
| 2026-10-03 20:38 | alive | 1.5 s | 4 | 626 |
| 2026-10-03 17:54 | alive | 1.0 s | 4 | 626 |
Badge
[](https://mcp-pulse.ulehla.dev/s/io.github.ketherworks/atcoder)