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National Library of Medicine Retrieve API

Retrieve full or summary records from Entrez databases.

National Library of Medicine Retrieve 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 Retrieve. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, a getting-started guide, and an API reference.

This API exposes 2 operations across 2 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.

2 operations 2 paths 0 schemas 2 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 2

Across 2 paths, the API surfaces 2 operations — 2 GET. Each is listed below with its method, path, parameters, and response codes.

Retrieve 2

Retrieve full or summary records from Entrez databases.

GET
/efetch.fcgi
Fetch full records by UID
eFetch 5 params → 200
GET
/esummary.fcgi
Retrieve document summaries
eSummary 4 params → 200

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

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

Other APIs National Library of Medicine publishes across the network.

National Library of Medicine Discovery API
National Library of Medicine History API
National Library of Medicine Search API