One integration, many upstreams — services that unify or resell access to other providers' APIs and data.
Every entry is live-probed like the rest of the directory: a maintainer confirmed the endpoint answered an x402 request correctly at review.
- Orders of Magnitude — Unified pay-per-call access to 1,100+ public and utility API endpoints through one wallet. $0.003–$0.10 per call, machine-readable manifest at
/x402.json(mirrored at/.well-known/x402). x402 v2, USDC on Base.