1,157 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 auth-method discovery — WWW-Authenticate header + RFC 8414 oauth-authorization-server + OpenID Connect discovery + JWKS + RFC 8705 oauth-protected-resource + login-form introspection, surfaces bearer/basic/oauth2/oi...
Paid DNT/GPC policy probe (cycle 96) — fetches target URL 3x (baseline, with DNT:1, with Sec-GPC:1); compares Set-Cookie count + body size to detect server-side honoring of privacy signals; probes 5 common privacy-policy...
Paid composite AI-agent friendliness score — rolls up 9 AI-relevant discovery surfaces (llms.txt + llms-full.txt + sitemap.xml + RSS/Atom + robots.txt AI-bot allow-rate + openapi.json + webmanifest + .well-known/agents.t...
Paid /.well-known/* inventory probe - enumerates 30 standard + proposed well-known paths (security.txt RFC 9116 + openid-configuration + webfinger + nodeinfo + agents.txt + llms.txt + llms-full.txt + apple-app-site-assoc...
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 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 Client Hints + Permissions-Policy probe (cycle 97) — captures Accept-CH (RFC 7231 §5.3.7) + Critical-CH (RFC 9981) request lines for Server Hints, parses Permissions-Policy header for feature gating intent; per-hint...
Paid RFC822 email-header forensics (cycle 101) — POST text/plain raw email source OR pass ?header=<RFC822> (256KB cap); folds continuation lines, parses per-Received hop (from/by/with-protocol/id/for-address/ips/delay/ti...
Paid CSP violation-report ROUND-TRIP replay (cycle 170, x402 $0.001) - fetches target page; extracts CSP header + meta CSP + Reporting-Endpoints header + report-uri + report-to group; for each declared endpoint REPLAYS 4...
Paid full HTTP response header inventory (cycle 99) — DUMPS every response header and classifies each into 5 categories (security / caching / cors / content-negotiation / custom-vendor-prefixed); reports legacy_disclosur...
Paid CSP per-directive source-list extraction + classification (cycle 176, x402 $0.001) - accepts GET ?url=<URL> OR POST application/json {'url':...}; fetches target page; extracts CSP header + meta CSP fallback; tokeniz...
Paid live QUIC (HTTP/3) handshake probe (cycle 101) — actively opens UDP/443 QUIC Initial packets to the resolved A/AAAA, tests 10 candidate versions (draft-29/30/31/32/33/34 + h3 + h3-Q050 + v2); parses server reply to...
Paid HTTP/3 QPACK (RFC 9204) encoder-pattern fingerprint probe (cycle 179, x402 $0.001) - accepts GET ?host=<HOST> (default www.cloudflare.com) OR POST application/json {'host':...,'force_quic':...}; fetches https://<hos...
Paid llms.txt provenance / author fingerprint (cycle 102) — extracts H1 + byline + contact emails + @-handles from llms.txt body, cross-references the same email against /.well-known/security.txt Contact: field (RFC 9116...
Paid active HTTP/2 SETTINGS frame probe (cycle 106) — opens fresh TCP, performs TLS 1.3 handshake with ALPN ["h2", "http/1.1"], sends the HTTP/2 client connection preface (PRI * HTTP/2.0 + 24-byte magic + client SETTINGS...
Paid email header forgery/anomaly detector (cycle 104) — accepts POST text/plain raw email OR GET ?header=<url-encoded RFC822> OR GET ?url=<.eml URL>; scores 13 forgery/anomaly patterns: From/Reply-To/Return-Path/Sender...
Paid brand-impersonation risk synthesis (cycle 106) — aggregates 8 signals (domain age via crt.sh, BIMI RFC 8848 record, RFC 9116 security.txt, llms.txt presence, /.well-known/x402 honest declaration, https→http redirect...
Paid AI discovery surface cross-validator (cycle 104) — fetches 4 surfaces (llms.txt + /.well-known/security.txt + openapi.json + agents.txt); extracts the contact claim from each (H1 title / RFC 9116 Contact / openapi.i...
Paid per-cookie IAB TCF v2.2 purpose classification (cycle 112) — fetches URL with HTTPCookieProcessor, captures every Set-Cookie, extracts inline document.cookie= writes, classifies each cookie by NAME heuristics (ga/_g...
Paid clickjacking-protection audit (cycle 115) — fetches the page headers + body, audits (a) X-Frame-Options presence + value (DENY/SAMEORIGIN valid, ALLOW-FROM deprecated per Chrome/Edge), (b) CSP frame-ancestors policy...
Paid cookie name-prefix (__Secure-/__Host-) policy audit (cycle 115) — fetches page Set-Cookie headers, for each cookie: extracts Secure/Path/Domain/HttpOnly/SameSite attributes, flags __Secure- prefix and checks Secure...
Paid composite AI-agent onboardability summary (cycle 120, x402 $0.001) - single-call composite that answers 'could an AI agent onboard to use this URL as a paid tool?' - fetches target URL + probes /openapi.json + /.wel...
Paid Cache-Control header granularity audit (cycle 119, x402 $0.001) - fetches target URL, parses every Cache-Control directive (max-age / s-maxage / stale-while-revalidate / stale-if-error / public / private / no-cache...
Paid Idempotency-Key header support probe (cycle 118) — fetches target URL, scans response headers for Idempotency-Replayed + X-Request-ID signals, probes 6 OpenAPI candidate paths for explicit Idempotency-Key parameter...