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Skillintermediate
Human Cell Atlas (HCA)
| Endpoint | Description | |----------|-------------| | `/index/projects?size={n}&catalog=dcp2` | List/search projects | | `/index/samples?size={n}&catalog=dcp2` | List/search samples | | `/index/files?size={n}&catalog=dcp2` | List/search files | | `/index/summary?catalog=dcp2` | Summary statistics |
Claude Code Knowledge Pack7/10/2026
Overview
Human Cell Atlas (HCA)
Base URL
https://service.azul.data.humancellatlas.org/
Auth
No auth required.
Key Endpoints
| Endpoint | Description |
|---|---|
/index/projects?size={n}&catalog=dcp2 | List/search projects |
/index/samples?size={n}&catalog=dcp2 | List/search samples |
/index/files?size={n}&catalog=dcp2 | List/search files |
/index/summary?catalog=dcp2 | Summary statistics |
Example Calls
# List projects
https://service.azul.data.humancellatlas.org/index/projects?size=5&catalog=dcp2
# Summary stats
https://service.azul.data.humancellatlas.org/index/summary?catalog=dcp2
Supports JSON filter parameters for organ, species, library construction, etc.
Response Format
JSON. hits array with project/sample/file metadata + pagination.
Rate Limits
No published limits. Be reasonable.