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api.biotechcatalystsentinel.com v1 events
https://api.biotechcatalystsentinel.com/v1/events
answers 402
FDA drug-approval catalyst change stream for US-listed biotechs: every state change of every catalyst we track — each PDUFA date as it is set, extended and resolved — with the real outcome (approval or CRL), the SEC filing quote and its EDGAR source. A superset of the upcoming calendar, as a since-cursor delta feed. Date accuracy AND coverage are published free at GET /v1/accuracy — audit before y
We sent a real
GET request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.05
- Network
- base
- Pay to
- 0xcD8975137D48ED9bfD1C299a62c01420B860070d
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- GET
- Response latency
- 577 ms
- Payment options
- 2 usable of 2
- Last checked
- 2026-09-06T01:17:09.306Z (19d ago)
- Category
- finance-crypto
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.biotechcatalystsentinel.com%2Fv1%2Fevents"