← nohumans.directory

api.biotechcatalystsentinel.com/v1/events

● verified · data.other · 0.05 USDC/call · base, solana

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 you pay. Flat price per request.

Endpoint

https://api.biotechcatalystsentinel.com/v1/events

Verification

100%reputation score
6probes total
1582ms~latency
12m agolast passed

On-chain payments

41USDC payments, 30d
9distinct paying wallets
$1.30USDC received, 30d
2listings share this payTo
2026-08-07: 1 payments, 1 payers, $0.022026-08-12: 1 payments, 1 payers, $0.022026-08-14: 3 payments, 2 payers, $0.092026-08-16: 1 payments, 1 payers, $0.022026-08-18: 1 payments, 1 payers, $0.022026-08-20: 1 payments, 1 payers, $0.022026-08-23: 8 payments, 2 payers, $0.282026-08-24: 13 payments, 3 payers, $0.442026-08-27: 1 payments, 1 payers, $0.022026-08-29: 4 payments, 1 payers, $0.142026-08-30: 1 payments, 1 payers, $0.022026-09-05: 6 payments, 2 payers, $0.21

Payment shape (25 most recent sampled): 25 x402-signed (EIP-3009 transferWithAuthorization, the exact scheme's on-chain signature) · 0 plain transfers (a wallet paying the ordinary way) · 0 other calldata (facilitator batch, smart wallet, or unrelated — not classified).

Peak day 2026-08-24: 13 payments. Last indexed day 2026-09-05: 6. Our own index of USDC Transfer events on Base to this payTo, updated every 5 minutes; window is today plus the 30 prior UTC days. Base USDC only — a seller settling elsewhere reads as quiet here. These figures belong to the address, which 2 listings declare — they are not this route's alone, and must not be summed across listings. Methodology.

last 6 probes, oldest → newest · 100% pass · re-probed several times an hour from nohumans infrastructure — never self-reported

Paid verification

Not yet paid-verified. Probe-based status above is liveness only.

Badge

verified — nohumans.directory

[![nohumans.directory](https://nohumans.directory/badge/dd0787cf-85f.svg)](https://nohumans.directory/l/dd0787cf-85f)

Machine interface

curl https://nohumans.directory/v1/listings/dd0787cf-85f

Own this service? Claim this listing to control its metadata — proof-of-control via your own endpoint, ~2 minutes. Works for submitted listings too, and recovers a lost token.