KEGG API

KEGG API (application programming interface) allows customization of KEGG-based analysis, such as for searching and computing biochemical pathways in cellular processes or analyzing the universe of genes in the completely sequenced genomes.

Restriction: KEGG API is provided for academic use by academic users belonging to academic institutions.

Announcement: Minor update of KEGG API

Starting on March 1, 2023 the list operation of KEGG API returns KEGG identifiers without the database name in most cases, in compatible with the form shown in Figure 1 of the recent NAR article.

Posted on February 20, 2023

REST API and WebLinks

The REST-style KEGG API may be supplemented with KEGG WebLinks for obtaining HTML pages. Please refer to the following documents.

Update history

March 1, 2023	Output format of list uses simplified KEGG identifiers
October 1, 2022	/list/<org> includes chromosomal positions
June 1, 2022	Moved from HTTP to HTTPS
December 1, 2017	NETWORK and VARIANT released
September 1, 2017	Options json for brite and conf for pathway included in get
August 1, 2017	Brite table files and xl files included in list and get
June 1, 2017	PubMed is included in link, Linked db displayed in info
December 1, 2016	New output format of list for GENES
October 1, 2016	RPAIR removed
February 1, 2016	New version of link and conv without using LinkDB
September 1, 2015	NCBI-ProteinID added to conv
July 1, 2014	DGROUP added
June 1, 2014	RDF format supported for link in KEGG MEDICUS
April 1, 2014	NDC (National Drug Code) added to DDI search
April 1, 2013	KEGG MEDICUS API released
February 1, 2013	(WebLinks) Pathway map coloring by POST method
January 18, 2013	KGML file retrieval, genes database in conv and link
July 25, 2012	HTTP status code implemented
July 17, 2012	Added: /find/<database>/<query>/<option>
July 6, 2012	Added: /list/<database>/<org>
June 20, 2012	First release

Last updated: March 1, 2023