# Services from api.trustsource.cc on Zero

> api.trustsource.cc serves 7 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/api.trustsource.cc
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/api.trustsource.cc/health.json

## Services

- [TrustSource URL Safety Verdict](https://www.zero.xyz/c/trustsource-url-safety-verdict-973e515d/llms.txt): $0.01/call via x402. Returns a single CLEAR/REVIEW/BLOCK safety verdict (0–100 score) for any URL by fusing domain trust, TLS certificate validity, and typosquat/lookalike detection
- [TrustSource HTTP Security Headers Analyzer](https://www.zero.xyz/c/api-trustsource-cc-99e608dc/llms.txt): $0.003/call via x402. Analyzes HTTP security headers for a given URL and returns a letter grade (A+ to F), a 0–100 score, and structured findings for HSTS, CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, COOP, and server header disclosure.
- [TrustSource SafeFetch](https://www.zero.xyz/c/trustsource-safefetch-a7ed473a/llms.txt): $0.01/call via x402. Fetches a URL safely, returning sanitized page text and a prompt-injection verdict (SAFE/REVIEW/BLOCK) by detecting hidden instructions, invisible Unicode, homoglyphs, encoded payloads, and data-exfiltration bait.
- [TrustSource Email Authentication Checker](https://www.zero.xyz/c/trustsource-email-authentication-checker-fbbe50c4/llms.txt): $0.003/call via x402. Checks a domain's email authentication posture (SPF, DMARC, DKIM, MX records) and returns an overall email trust score.
- [TrustSource Domain Trust Score](https://www.zero.xyz/c/api-trustsource-cc-4ee8c110/llms.txt): $0.003/call via x402. Returns a 0–100 trust score, risk tier (TRUSTED/MODERATE/CAUTION/HIGH_RISK), domain age, DNS records, and registrar for a given domain or URL.
- [TrustSource Robots.txt Intelligence API](https://www.zero.xyz/c/api-trustsource-cc-5efec1b6/llms.txt): $0.002/call via x402. Parses a domain's robots.txt file and returns AI bot crawl policies, access tiers, per-bot allow/disallow rules, and sitemap URLs
- [TrustSource SSL/TLS Certificate Intelligence](https://www.zero.xyz/c/api-trustsource-cc-e4b912b7/llms.txt): $0.002/call via x402. Analyzes a domain's SSL/TLS certificate and returns a 0–100 trust score, tier classification, chain details, expiry info, signature algorithm, TLS protocol version, and cipher quality.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)