What is available today, verified endpoint by endpoint โ plus what is still in preparation. Everything listed under โavailableโ returns real data from the same backend as the web pages.
This is the endpoint that powers the gene viewer on the site. Verified working on 2026-09-29.
sp_id: atlas dataset id (e.g. SP121; the full list is on the Download page).gene: gene symbol as it appears in the dataset's gene_list.json.For anything beyond single-gene lookups, the supported programmatic route today is direct download: count matrices, annotated h5ad objects, per-species atlas packages and cell-level metadata are all available from the Download Center.
A versioned REST API (species / tissues / cell types / batch expression queries) is being prepared. No endpoints are published before they pass automated verification โ this page is the single source of truth for what exists. Last full-site check: 2026-09-29.