1,395 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.
Paid Certificate Transparency log auditor (cycle 85, x402 $0.001) - GET ?domain=<DOMAIN> queries crt.sh for issued certificates and reports issuer distribution, certificate records, first/last-seen timestamps and an A-F...
Paid page-archaeology — detects parked domains, thin content, stale copyright (>5y), auto-generated patterns, missing author bylines; returns is_parked + is_thin + is_stale + classification (human_curated/auto_generated/...
Paid CDN edge-coverage audit — 5 anycast probe points (Cloudflare/Google/Quad9/OpenDNS/CIRA), per-tenant reachability + edge diversity + PoP region detection + cdn_coverage_score A-F grade via x402
Paid agent cost calculator — detects auth scheme (Bearer/ApiKey/session_cookie/none) + rate-limit headers + CORS policy + cache max-age + compression + paid-API indicators (Stripe/Gumroad/pricing/checkout); returns estim...
Paid OpenAPI/Swagger/AsyncAPI/GraphQL/Postman/JSON-Schema spec format + version detector (cycle 98) — probes 9 conventional spec paths (/openapi.json + /openapi.yaml + /swagger.json + /swagger.yaml + /.well-known/openapi...
Paid multi-formula readability analysis — 5 formulas (Flesch Reading Ease + Flesch-Kincaid Grade + Gunning Fog + Coleman-Liau + SMOG) computed from extracted main-content text, returns main_text_preview + word/sentence/s...
Paid SVCB/HTTPSSVC (RFC 9460+9461) deep parser (cycle 170, x402 $0.001) - probes 11 conventional _<port>._<proto>.<domain> SVCB endpoints (_443._tcp + _443._tcp.www + _443._tcp.api + _80._tcp + _25._tcp + _587._tcp + _85...
Paid RPKI Route Origin Validation (ROV) auditor per RFC 6811 (cycle 172, x402 $0.001) - accepts ?prefix=<CIDR> [auto-resolves announcing ASN via RIPEstat prefix-overview] OR ?prefix=<CIDR>&asn=ASxxxx OR ?asn=ASxxxx; call...
Paid x402 seller leaderboard / ranking auditor (cycle 173, x402 $0.001) - accepts ?url=<X402_CATALOG_URL> (defaults to our /.well-known/x402) + ?top=<N> (default 25, max 100); clusters all payable endpoints by payTo, com...
Paid META-API cost projector for THIS service (cycle 98) — given calls_per_day + route list (or "all") + period (daily|weekly|monthly), pulls the live x402 price catalog and projects aggregate_daily_cost_usd + aggregate_...
Paid x402 SELLER probe (cycle 102) — fetches a target domain's /.well-known/x402 discovery doc, parses several schema variants (object.endpoints / object.items / object.routes / bare-list / line-delimited), returns raw_e...
Paid Model Context Protocol (MCP) server discovery (cycle 103) — fetches a target's MCP descriptor from 6 candidate paths (/.well-known/mcp.json, /mcp.json, /.well-known/model-context-protocol.json, /model-context-protoc...
Paid DNSSEC chain-of-trust validation (cycle 103) — fetches the zone's DNSKEY + RRSIG via Cloudflare DoH, walks the chain (zone DNSKEY ← DS at parent); for each step verifies the DS digest matches a computed DNSKEY diges...
Paid x402 task-to-route recommender (cycle 175, x402 $0.001) - accepts GET ?task=<TEXT> OR GET ?q=<TEXT> OR POST application/json {'task':...}; pulls our own /.well-known/x402 catalog (~249 endpoints), scores each endpoi...
Paid AI-agent tool-call card generator (cycle 105) — accepts GET ?url=<TARGET> OR POST application/json {url: <TARGET>}; probes /.well-known/x402 + 4 OpenAPI candidate paths + /llms.txt; aggregates into a single structur...
Paid JSONPath extraction (cycle 108) — accepts GET ?url=<URL>&path=<JSONPATH> OR GET ?json=<urlencoded JSON>&path=<JSONPATH> OR POST application/json {url|json, path}; fetches the URL (or parses inline JSON) and applies...
Paid x402 multi-task pipeline planner / orchestrator (cycle 176, x402 $0.001) - accepts POST application/json {'tasks': ['task1', 'task2', ...]} OR GET ?tasks=task1|task2|task3 OR GET ?q=...; maps each task to its best-f...
Paid Open Graph + Twitter Card metadata freshness + reachability probe (cycle 112) — fetches URL, extracts og:* + twitter:* meta tags, HEAD-probes each og:image / og:image:secure_url / twitter:image, returns per-image st...
Paid readability + per-paragraph reading-time estimator (cycle 110) — fetches URL, extracts paragraph-level text, then computes 6 readability formulas (Flesch, Flesch-Kincaid, Gunning Fog, SMOG, Coleman-Liau, ARI) + tota...
Paid JavaScript syntax-validity probe (cycle 114) — fetches the page HTML, extracts every inline <script> block + every external <script src=> (parallel fetch with 8s timeout + 500KB cap per script, max 20 externals), fo...
Paid OpenAPI / Swagger 2.0 best-practices quality audit (cycle 114) — accepts GET ?url=<openapi.json URL> OR POST application/json with {spec:{...}} or {spec_text:"<YAML or JSON>"}; scores 12 quality dimensions: (a) Open...
Paid DNS nameserver vendor fingerprint (cycle 116) — queries NS records via Cloudflare DoH, classifies each NS hostname against a 28-provider heuristic table (Cloudflare/AWS-Route53/Google-Cloud-DNS/NS1/Azure/Akamai-Edge...
Paid CDN / edge-provider detection from response headers (cycle 116) — fetches target URL, inspects 25+ CDN-specific response headers (CF-Ray/CF-Cache-Status/CF-Request-Id + X-Amz-Cf-Id/X-Amz-Cf-Pop + X-Vercel-Id/X-Verce...
Paid WebAuthn / Passkey policy audit (cycle 117) — non-authenticated scan of a sites passkey posture: (a) detects 13 vendor SDKs in HTML (SimpleWebAuthn/Corbado/Hanko/Stytch/Clerk/WorkOS/Auth0/Okta/Descope/Keycloak/Bitwa...