# KEGG REST API

**Canonical:** https://apis.io/apis/kegg/kegg-rest-api/  
**Provider:** Kyoto Encyclopedia of Genes and Genomes (KEGG) — https://apis.io/providers/kegg/  
**Base URL:** https://rest.kegg.jp  
**Documentation:** https://www.kegg.jp/kegg/rest/

KEGG REST API is one of 8 APIs that [Kyoto Encyclopedia of Genes and Genomes (KEGG)](https://apis.io/providers/kegg/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Pathways, Metabolic Networks, Genomics, Drug Targets, and Disease. The published artifact set on APIs.io includes API documentation and rate-limit docs.

The KEGG REST API provides unified programmatic access to all KEGG databases through seven operations: INFO (database statistics and release notes), LIST (entry identifiers and names), FIND (keyword and molecular weight/formula search), GET (full entry retrieval in flat-file, KGML, JSON, image, or sequence formats), CONV (identifier conversion between KEGG and external databases such as NCBI, UniProt, PubChem, and ChEBI), LINK (cross-reference lookup between KEGG databases), and DDI (adverse drug-drug interaction queries). Databases covered include PATHWAY, BRITE, MODULE, KO, GENES, GENOME, COMPOUND, GLYCAN, REACTION, ENZYME, DISEASE, DRUG, NETWORK, VARIANT, and DGROUP. The API is restricted to academic users; commercial use requires a license from Pathway Solutions. Rate limit is 3 requests per second per client.

## Machine-readable artifacts (6)

- **Documentation** — https://www.kegg.jp/kegg/rest/keggapi.html
- **TermsOfService** — https://www.kegg.jp/kegg/legal.html
- **RateLimits** — https://api-evangelist.github.io/kegg/rate-limits/kegg-rest-api.yml
- **Plans** — https://api-evangelist.github.io/kegg/plans/kegg-rest-api.yml
- **FinOps** — https://api-evangelist.github.io/kegg/finops/overview.yml
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/kegg/refs/heads/main/apis.yml

## Other Kyoto Encyclopedia of Genes and Genomes (KEGG) APIs (7)

- [Kyoto Encyclopedia of Genes and Genomes (KEGG) conv API](https://apis.io/apis/kegg/kegg-conv-api/)
- [Kyoto Encyclopedia of Genes and Genomes (KEGG) ddi API](https://apis.io/apis/kegg/kegg-ddi-api/)
- [Kyoto Encyclopedia of Genes and Genomes (KEGG) find API](https://apis.io/apis/kegg/kegg-find-api/)
- [Kyoto Encyclopedia of Genes and Genomes (KEGG) get API](https://apis.io/apis/kegg/kegg-get-api/)
- [Kyoto Encyclopedia of Genes and Genomes (KEGG) info API](https://apis.io/apis/kegg/kegg-info-api/)
- [Kyoto Encyclopedia of Genes and Genomes (KEGG) link API](https://apis.io/apis/kegg/kegg-link-api/)
- [Kyoto Encyclopedia of Genes and Genomes (KEGG) list API](https://apis.io/apis/kegg/kegg-list-api/)

## Tags

Pathways, Metabolic Networks, Genomics, Drug Targets, Disease, Chemical Compounds, Enzymes, Identifier Conversion, Orthology

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