The complete daily observation history of third-party x402 endpoints since first observation, with the Merkle root of each day. Each root is chained to the previous day and timestamped into Bitcoin via OpenTimestamps, so the archive can be verified as having existed on the stated dates rather than assembled later. The most recent 7 days are free at /v1/datasets/day/{day}; the manifest and verification method are free at /v1/datasets/manifest.

Fresh probe of your endpoint plus an Ed25519-signed quality attestation (compact JWS, 24h TTL) you can embed in your 402 responses to raise buyer conversion.

Router-grade bulk quality feed: every tracked endpoint with score, grade, availability, latency percentiles, price, uptime streak and freshness in one pull. Designed for routers/aggregators to ingest.

x402 endpoint quality rankings: a ranked directory of x402 APIs by measured uptime and reliability rather than on-chain volume. Includes score, grade, latency and pricing per endpoint.

API uptime and reliability monitoring for any x402 endpoint: a live quality verdict covering availability, uptime, latency percentiles, 402-offer conformance, price-drift and payTo-stability flags. Deterministic and re-verifiable.