Ncbi Eutils

NCBI E-utilities MCP — federated search and fetch across all NCBI Entrez databases: PubMed, Gene, Nucleotide, Protein, Taxonomy, ClinVar, dbSNP, OMIM, BioProject, BioSample, SRA, … Keyless (3 req/s without key).

Part of Pipeworx — an MCP gateway connecting AI agents to 1394+ live data sources.

Tools

• einfo(db?) — database info / field list
• esearch(db, term, retmax?, retstart?, sort?) — search → uid list
• esummary(db, ids, retstart?) — summary records by uid
• efetch(db, ids, rettype?, retmode?) — full records
• elink(dbfrom, dbto, ids, linkname?) — links across databases
• egquery(term) — global query across all databases

Data source

https://eutils.ncbi.nlm.nih.gov/entrez/eutils/

Quick Start

Add to your MCP client (Claude Desktop, Cursor, Windsurf, etc.):

{
  "mcpServers": {
    "ncbi-eutils": {
      "url": "https://gateway.pipeworx.io/ncbi-eutils/mcp"
    }
  }
}

Or connect to the full Pipeworx gateway for access to all 1394+ data sources:

{
  "mcpServers": {
    "pipeworx": {
      "url": "https://gateway.pipeworx.io/mcp"
    }
  }
}

Using with ask_pipeworx

Instead of calling tools directly, you can ask questions in plain English:

ask_pipeworx({ question: "your question about Ncbi Eutils data" })

The gateway picks the right tool and fills the arguments automatically.

More

• Docs and guides
• pipeworx.io

License

MIT