x402 Publisher Status
Live status of every known x402 publisher's /.well-known/x402.json manifest, probed hourly by TensorFeed. Manifest validity, fetch latency, 24-hour and 7-day uptime. Free, no auth, agent-friendly JSON at /api/x402/status.
How this works
An hourly cron on the TensorFeed Worker walks the editorial x402 adopters catalog (the same data behind /api/x402-adopters) plus the AFTA federation members, and fetches each publisher's /.well-known/x402.json over HTTPS. Each check records: HTTP status, fetch latency, whether the JSON parses, and whether it conforms to the canonical Coinbase x402 V2 shape (x402Version: 2 plus a non-empty accepts[] array).
Uptime percentages are computed over the rolling window. A publisher counts as "up" for a given hourly check if and only if all three pass: reachable, valid JSON, and canonical V2 shape. Anything else (manifest 404, timeout, malformed, v1 shape, plain text status response) is a failure for that hour.
Inclusion is editorial, not endorsement. A green status here only means the publisher's manifest is currently reachable and parseable. It does not certify that they honor receipts, deliver real data, or settle payments correctly. For that depth, run the AFTA self-check at /verify or audit on-chain with the verifier MCP @tensorfeed/x402-base-mcp.