x402mpp.sh
ExplorerDirectory
endpoint / cataloged

Sample any single record in the OSF catalog for $0.001: the full JSON payload plus a provenance URL to the authoritative

Sample any single record in the OSF catalog for $0.001: the full JSON payload plus a provenance URL to the authoritative primary source. A low cost way for an autonomous agent to try the data before buying at the standard per record or search price. One verified record per call keyed by record_id from the free catalog, across 80 sources of US government and scientific data. Fair use daily cap per wallet.

https://api.osf-master-server.com/x402/sample/:record_id ↗
Statuscataloged
Networkeip155:8453
Schemeexact
First seen2026-08-30T15:59:41Z

Payment + protocol

MethodGET
Protocolx402 v2
Networkeip155:8453
Schemeexact
Asset0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Amount1000
Pay to0x72f62dE8b70d6CFa8Cc2dF6f21F243f289F3396c
Evidencebazaar
First seen2026-08-30T15:59:41Z
Last seen2026-08-30T20:17:44Z

Discovery evidence