What this directory measures

Imported listings are discovery leads. Mekler reviews public business attribution and probes concrete endpoints without sending payment credentials. Imported names, networks and prices remain attributed claims.

Health and payment readiness

Checks target a 15-minute cadence, with two concurrent requests per origin, ten-second deadlines and bounded responses. Valid payment challenges and successful public responses establish reachability. Input, authentication, throttling and unexercised parameterized paths remain unknown. Unknown checks do not become measured downtime or zero usage.

Three consecutive observed failures mark a route offline. Sustained offline listings leave default search after 30 days; three successes spanning at least 30 minutes restore automatic removals. Owners can independently hide a listing.

Payment-ready means a valid unsigned x402 challenge within seven days. It does not mean a payment was attempted or a useful result delivered. This release awards no paid-delivery certification or independent chain-activity ranking.

History and changes

Raw observations retain 30 days and UTC daily aggregates persist. Uptime uses rolling 24-hour, 7-day, 30-day and 90-day windows by completed-cycle time. Compact quarter-hour service counters retain 90 days to resolve partial boundary days; endpoint-level raw checks retain 30 days. Missing observations are excluded, so examine coverage. Price history uses observed eligible USDC challenges. Offer-change fingerprints detect differences without publishing payout addresses or target response bodies.

Sources and reuse

Traffic facts are labeled CDP Bazaar with the exact matched-resource coverage and observation time. Its offset-paginated feed changes during collection; absence never establishes zero. These counts are not independent chain evidence and may include self-funded traffic.

Imported directory data: x402-list.com, CC BY 4.0. Retain included attribution when reusing imported facts. Mekler’s own observations are separately identified. A seed source’s history is not presented as Mekler monitoring history.