NCBI E-utilities
live BioReferenceNCBI E-utilities — federated Entrez search/fetch across PubMed, Gene, Nucleotide, Protein, Taxonomy, ClinVar, dbSNP, OMIM, etc. Keyless.
6 tools
0ms auth
free tier 50 calls/day
Tools
einfo Database info.
Parameters
Name Type Description
db opt string — Try it
Response
esearch
required: db, term Search → uid list.
Parameters
Name Type Description
db req string — term req string — retmax opt number — retstart opt number — sort opt string — Try it
Response
esummary
required: db, ids Summary records by uid.
Parameters
Name Type Description
db req string — ids req array — retstart opt number — Try it
Response
efetch
required: db, ids Full records.
Parameters
Name Type Description
db req string — ids req array — rettype opt string — retmode opt string — Try it
Response
elink
required: dbfrom, dbto, ids Links across DBs.
Parameters
Name Type Description
dbfrom req string — dbto req string — ids req array — linkname opt string — Try it
Response
egquery
required: term Global query.
Parameters
Name Type Description
term req string — Try it
Response
Test with curl
The gateway speaks JSON-RPC 2.0 over HTTP POST. You can test any pack directly from the terminal.
List available tools
bash
curl -X POST https://gateway.pipeworx.io/ncbi-eutils/mcp \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'Call a tool
bash
curl -X POST https://gateway.pipeworx.io/ncbi-eutils/mcp \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","id":2,"method":"tools/call","params":{"name":"einfo","arguments":{}}}'Use with the SDK
Install @pipeworx/sdk to call tools from any TypeScript/Node project.
TypeScript
import { Pipeworx } from '@pipeworx/sdk';
const px = new Pipeworx();
const result = await px.call("einfo", {}); ask_pipeworx
// Or ask in plain English:
const answer = await px.ask("ncbi e-utilities — federated entrez search/fetch across pubmed, gene, nucleotide, protein, taxonomy, clinvar, dbsnp, omim, etc");