11 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.
Fetch a URL and report whether it is reachable, the HTTP status code, and the response time in milliseconds. A fast liveness/uptime probe — run it before relying on a site or as a cheap health signal.
Cron expression explained in plain English with the next run times in any time zone - validates a 5-field cron and handles DST
Paid x402 facilitator benchmark (cycle 196, x402 $0.001) - GET ?facilitator=&network=&asset=&pay_to=&rounds=N benchmarks the facilitator that EVERY x402 payment funnels through: live /supported capability probe (does it...
Paid QUIC spin-bit privacy-leak audit (cycle 164, x402 $0.001) - actively probes RFC 9000 SS15.2 / RFC 9312 spin-bit privacy behavior. Per RFC 9312 SS3.2 the spin bit is the second-most-significant bit of byte 0 of long-...
Paid JWT HS256 signature-timing sidechannel probe (cycle 152, x402 $0.001) - forges 32 HS256 JWTs varying the LAST signature byte, sends each (default 12 iterations) against target's Authorization: Bearer header, measure...
Paid API-freshness probe (cycle 96) — HEAD-probes 10 conventional health/version endpoints (/health, /healthz, /ready, /readyz, /livez, /api/health, /api/version, /api/status, /api/ping, /api/info); per-probe status + la...
Paid redirect-chain map (cycle 95) — follows 3xx chain up to 15 hops without auto-follow (custom HTTPRedirectHandler); per-hop status+location+scheme_change+latency_ms+content_length; detects redirect loops, cross-domain...
Paid CSP report-uri/report-to endpoint probe — extracts report-uri + report-to from CSP header + Reporting-Endpoints header lookup, then POSTs a synthetic csp-report payload to each declared endpoint to verify reachabili...
Paid deep HTTP redirect chain analyzer — per-hop latency_ms + headers (server/content-type/cache-control/x-cache/cf-ray/cf-ipcountry/vary/set-cookie count/hsts) + status sub-type classification (301/302/303/307/308) + cr...
Paid network-timing breakdown for a URL — DNS resolve + TCP connect + TLS handshake + TTFB (time to first byte) + total download phase-by-phase milliseconds + CDN/edge-region detection from CF-Ray/X-Amz-Cf-Pop/X-Vercel-I...
Paid page load performance (TTFB, size, compression, redirects) via x402