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National Library of Medicine Discovery API

Discover database metadata, related records, and citations.

National Library of Medicine Discovery API is one of 4 APIs that National Library of Medicine publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Discovery. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, a getting-started guide, and an API reference.

This API exposes 4 operations across 4 paths. It is described by OpenAPI 3.0.3, at version 1.0.

Requests are made against a single base URL, https://eutils.ncbi.nlm.nih.gov/entrez/eutils.

4 operations 4 paths 0 schemas 4 GET

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.0.3
API Version
1.0
Base URL
https://eutils.ncbi.nlm.nih.gov/entrez/eutils
Resource Areas
1

Paths & Operations 4

Across 4 paths, the API surfaces 4 operations — 4 GET. Each is listed below with its method, path, parameters, and response codes.

Discovery 4

Discover database metadata, related records, and citations.

GET
/einfo.fcgi
Database statistics and field metadata
eInfo 2 params → 200
GET
/elink.fcgi
Find related records across Entrez databases
eLink 5 params → 200
GET
/espell.fcgi
Spelling suggestions for a query term
eSpell 2 params → 200
GET
/ecitmatch.cgi
Match citations to PubMed UIDs
eCitMatch 3 params → 200

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

national-library-of-medicine-discovery-api-openapi.yml Raw ↑

Other APIs National Library of Medicine publishes across the network.

National Library of Medicine History API
National Library of Medicine Retrieve API
National Library of Medicine Search API