ENA API
The European Nucleotide Archive (ENA) as an API, powered by EMBL-EBI — one of the three INSDC partners alongside NCBI GenBank and DDBJ, and the comprehensive public archive of the world's nucleotide sequence data. ENA holds raw sequencing reads, assembled and annotated genomes, individual sequences, biological samples and the studies behind them, for every domain of life — the backbone resource for genomics, microbiology, ecology, evolution and clinical research. This API gives a clean three-step workflow over that archive. First, /v1/taxon resolves an organism name (e.g. "Homo sapiens") to its NCBI taxon id, scientific name, taxonomic rank and full lineage — or looks a taxon up directly by id. Then /v1/search queries the archive for that taxon's records of a chosen type: genome assemblies (with assembly name, level and base count), sequencing runs (with platform, instrument and read counts), biological samples (with collection date and country), annotated sequences, read experiments, analyses, coding and non-coding sequences, and studies — by default including all descendant taxa, or restricted to the exact taxon. Finally /v1/record returns a summary for any ENA accession — assemblies (GCA_…), studies and projects (PRJ…), samples (SAM…/ERS…), sequencing runs (ERR…/SRR…) and sequences — with its title, data type, taxon, scientific name, base and sequence counts and public status. Ideal for bioinformatics pipelines, genome-data discovery, sequencing-metadata harvesting, biodiversity and metagenomics tooling, and research reproducibility. Taxon ids look like 9606 (human); accessions like GCA_000001405. Data from EMBL-EBI ENA, an INSDC archive, free to use.
api.oanor.com/ena-api
