Trustsource

robots.txt and AI crawler policy check. Tells an agent whether a website permits crawling and whether it blocks AI bots such as GPTBot, ClaudeBot, Google-Extended, PerplexityBot and CCBot, before scraping, RAG ingestion, training data collection or archiving. Parses robots.txt and returns a crawl-policy tier with per-bot allow and disallow rules and sitemap URLs.

Check whether a domain's TLS/SSL certificate is valid, trusted, and not expiring before connecting to it. Performs a live handshake and returns a 0–100 score and tier (VALID/WEAK/EXPIRING/EXPIRED/UNTRUSTED/INVALID) with chain trust, days-to-expiry, signature algorithm, TLS version, and cipher quality. Use before submitting credentials, posting to a webhook, or following a payment link, to catch expired, self-signed, or MITM-risk certificates.

Audit a site's HTTP security headers before embedding, scraping, or trusting it. Returns an A+ to F grade and 0–100 score with structured analysis of HSTS, CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, and Cross-Origin headers, plus server-header disclosure. A defense-in-depth signal for agents reviewing a site's security posture — not a vulnerability scan.

Verify whether a domain is legitimate and safe before transacting with it. Returns a 0–100 trust score and tier (TRUSTED/MODERATE/CAUTION/HIGH_RISK) derived from WHOIS domain age, TLD risk, DNS presence, and registrar reputation. Use to vet an unfamiliar URL, redirect target, or payment destination before sending USDC or trusting its content.