AtCoder MCP Server for Claude Code

io.github.ketherworks/atcoder

Search AtCoder problems and fetch public problem statements through MCP.

client:Claude Code transport:streamable-http tools:4

Install AtCoder MCP Server in Claude Code

run in your project directory

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

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs