MCP server for the OEIS (Online Encyclopedia of Integer Sequences) API
MCP server for the OEIS (Online Encyclopedia of Integer Sequences) API. That is what the mcp mcp server brings to an AI assistant: the same capability, reachable through the Model Context Protocol rather than a separate app or dashboard.
MCP server for the OEIS (Online Encyclopedia of Integer Sequences) API
The server publishes 3 tools. What each one is for:
get_sequence_by_id — Get a sequence by its OEIS ID (e.g., "A000109" for simplicial polyhedra, "A000045" for Fibonacci)search_by_terms — Search OEIS sequences by providing integer terms. For example, searching [1,1,2,3,5,8] will find the Fibonacci sequencesearch_by_name — Search OEIS sequences by name or keyword. For example, searching "Fibonacci" will find Fibonacci-related sequencesInstallation goes through your MCP client rather than a global install: point it at mcp-oeis on PyPI and it is fetched when the client starts. The copy-paste blocks for Claude Desktop, Claude Code and Cursor are further down this page.
Plenty of developer tooling servers cover similar ground. The differences that matter in practice are scope of access and how much setup stands between you and a working tool call. MCP's toolset — get_sequence_by_id, search_by_terms, search_by_name — is a fair guide to whether it matches your workflow. It is maintained by daedalus; worth a glance at recent repository activity before you build anything load-bearing on it.
SyncDev reviews every entry in this directory against the project's own documentation before publishing, and revisits them as servers change.
| Tool | What it does |
|---|---|
| get_sequence_by_id | Get a sequence by its OEIS ID (e.g., "A000109" for simplicial polyhedra, "A000045" for Fibonacci). |
| search_by_terms | Search OEIS sequences by providing integer terms. For example, searching [1,1,2,3,5,8] will find the Fibonacci sequence. |
| search_by_name | Search OEIS sequences by name or keyword. For example, searching "Fibonacci" will find Fibonacci-related sequences. |
{
"mcpServers": {
"oeis": {
"command": "uvx",
"args": ["mcp-oeis"]
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
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