Oeis MCP Server: Install & Setup

Install Oeis in Claude Code

Claude Code

claude mcp add mrfentmen-oeis -- npx -y oeis-mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "mrfentmen-oeis": {
      "command": "npx",
      "args": [
        "-y",
        "oeis-mcp"
      ]
    }
  }
}

Use this MCP server to the OEIS, the encyclopedia of integer sequences. Look up any sequence,...

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

Run: claude mcp add mrfentmen-oeis -- npx -y oeis-mcp

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