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National Center for Biotechnology Information (NCBI)

National Center for Biotechnology Information (NCBI) Fetch API

Retrieve records from Entrez databases

Documentation Provider Profile APIs.io OpenAPI GitHub

National Center for Biotechnology Information (NCBI) Fetch API is one of 18 APIs that National Center for Biotechnology Information (NCBI) publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Fetch. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and rate-limit docs.

This API exposes 2 operations across 2 paths, and defines 1 schema. It is described by OpenAPI 3.2.0, at version 1.0.0.

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

2 operations 2 paths 1 schemas 2 GET

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
1.0.0
Base URL
https://eutils.ncbi.nlm.nih.gov/entrez/eutils/
Authentication
API Key
Contact
NCBI
License
Public Domain
Resource Areas
1

Authentication & Security 1

National Center for Biotechnology Information (NCBI) Fetch API declares 1 security scheme for authenticating requests. An API key is passed in the query as api_key (ApiKeyAuth).

  • ApiKeyAuth — NCBI API key from https://www.ncbi.nlm.nih.gov/account/

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.

Fetch 2

Retrieve records from Entrez databases

GET
/efetch.fcgi
Fetch Records
fetchRecords 7 params → 200
GET
/esummary.fcgi
Get Document Summaries
getSummaries 4 params → 200

Schemas 1

The contract defines 1 schema that model the data the API accepts and returns. The most detailed is ESummaryResult (1 property). Each schema is shown below with its type and property counts.

ESummaryResult
object
Document summaries from Entrez
1 property

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

ncbi-fetch-api-openapi.yml Raw ↑

Other APIs National Center for Biotechnology Information (NCBI) publishes across the network.

NCBI Entrez E-utilities API
AE Profile APIs.io
PubChem PUG REST API
AE Profile APIs.io
PMC Open Access API (OA Service)
AE Profile APIs.io
PMC ID Converter API
AE Profile APIs.io
PMC OAI-PMH Service
AE Profile APIs.io
National Center for Biotechnology Information (NCBI) BioSample API
AE Profile APIs.io
National Center for Biotechnology Information (NCBI) Gene API
AE Profile APIs.io
National Center for Biotechnology Information (NCBI) Genome API
AE Profile APIs.io
National Center for Biotechnology Information (NCBI) Organelle API
AE Profile APIs.io
National Center for Biotechnology Information (NCBI) Prokaryote API
AE Profile APIs.io
National Center for Biotechnology Information (NCBI) Taxonomy API
AE Profile APIs.io
National Center for Biotechnology Information (NCBI) Version API
AE Profile APIs.io
#Fetch
← Back to N APIs
API Details
ID
ncbi:ncbi-fetch-api
Base URL
https://eutils.ncbi.nlm.nih.gov/entrez/eutils/
Docs
https://www.ncbi.nlm.nih.gov/books/NBK25497/
Provider
National Center for Biotechnology Information (NCBI)
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