# United States National Library of Medicine Info API

**Canonical:** https://apis.io/apis/united-states-national-library-of-medicine/united-states-national-library-of-medicine-info-api/  
**Provider:** United States National Library of Medicine — https://apis.io/providers/united-states-national-library-of-medicine/  
**Base URL:** https://eutils.ncbi.nlm.nih.gov/entrez/eutils  
**Documentation:** https://www.ncbi.nlm.nih.gov/books/NBK25497/

United States National Library of Medicine Info API is one of 10 APIs that [United States National Library of Medicine](https://apis.io/providers/united-states-national-library-of-medicine/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Info. The published artifact set on APIs.io includes an OpenAPI specification and API documentation.

Database information and statistics

## Machine-readable artifacts (10)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/united-states-national-library-of-medicine/refs/heads/main/openapi/united-states-national-library-of-medicine-info-api-openapi.yml
- **Documentation** — https://www.ncbi.nlm.nih.gov/books/NBK25497/
- **Portal** — https://www.ncbi.nlm.nih.gov/home/develop/api/
- **SpectralRules** — https://raw.githubusercontent.com/api-evangelist/united-states-national-library-of-medicine/refs/heads/main/rules/ncbi-e-utilities-rules.yml
- **Documentation** — https://www.ncbi.nlm.nih.gov/datasets/docs/v2/api/
- **SwaggerUI** — https://www.ncbi.nlm.nih.gov/datasets/docs/v2/api/rest-api/
- **Repository** — https://github.com/ncbi/datasets
- **Documentation** — https://blast.ncbi.nlm.nih.gov/doc/blast-help/developerinfo.html
- **Documentation** — https://clinicaltrials.gov/data-api/api
- **Portal** — https://clinicaltrials.gov/data-api/api#introduction

## Other United States National Library of Medicine APIs (9)

- [United States National Library of Medicine BLAST API](https://apis.io/apis/united-states-national-library-of-medicine/united-states-national-library-of-medicine-blast-api/)
- [United States National Library of Medicine Fetch API](https://apis.io/apis/united-states-national-library-of-medicine/united-states-national-library-of-medicine-fetch-api/)
- [United States National Library of Medicine Gene API](https://apis.io/apis/united-states-national-library-of-medicine/united-states-national-library-of-medicine-gene-api/)
- [United States National Library of Medicine Genome API](https://apis.io/apis/united-states-national-library-of-medicine/united-states-national-library-of-medicine-genome-api/)
- [United States National Library of Medicine Link API](https://apis.io/apis/united-states-national-library-of-medicine/united-states-national-library-of-medicine-link-api/)
- [United States National Library of Medicine Metadata API](https://apis.io/apis/united-states-national-library-of-medicine/united-states-national-library-of-medicine-metadata-api/)
- [United States National Library of Medicine Search API](https://apis.io/apis/united-states-national-library-of-medicine/united-states-national-library-of-medicine-search-api/)
- [United States National Library of Medicine Studies API](https://apis.io/apis/united-states-national-library-of-medicine/united-states-national-library-of-medicine-studies-api/)
- [United States National Library of Medicine Taxonomy API](https://apis.io/apis/united-states-national-library-of-medicine/united-states-national-library-of-medicine-taxonomy-api/)

## Tags

Info

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/united-states-national-library-of-medicine/united-states-national-library-of-medicine-info-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/united-states-national-library-of-medicine/.