# Services from http-security-headers-grade.x402supply.com on Zero

> http-security-headers-grade.x402supply.com serves 2 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/http-security-headers-grade.x402supply.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/http-security-headers-grade.x402supply.com/health.json

## Services

- [HTTP Security Headers Grade](https://www.zero.xyz/c/http-security-headers-grade-2c39501d/llms.txt): $0.01/call via x402. Fetches a public URL via GET and grades its HTTP security headers from A+ to F, returning score, present/missing headers, per-header findings with fix values, and cookie flag issues.
- [HTTP Security Headers Grader](https://www.zero.xyz/c/http-security-headers-grader-4c33da7a/llms.txt): $0.01/call via x402. Fetches a public URL and grades its HTTP security headers from A+ to F, returning a score, present/missing headers, per-header findings with fix recommendations, and cookie flag issues.

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)