Oeis MCP Server: Install & Setup

Install Oeis in Claude Code

Claude Code

claude mcp add --transport http oeis https://oeis.caseyjhand.com/mcp

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

{
  "mcpServers": {
    "oeis": {
      "url": "https://oeis.caseyjhand.com/mcp"
    }
  }
}

Claude Code

claude mcp add oeis -- npx -y @cyanheads/oeis-mcp-server

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

{
  "mcpServers": {
    "oeis": {
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/oeis-mcp-server"
      ]
    }
  }
}

Identify integer sequences by terms, search the OEIS, read formulas, programs, b-files, cross-refs.

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

Local + Remote. Can run locally or be used as a hosted remote server.

Run: claude mcp add --transport http oeis https://oeis.caseyjhand.com/mcp

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