# Services from api.x402lint.dev on Zero

> api.x402lint.dev serves 4 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.x402lint.dev
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/api.x402lint.dev/health.json

## Services

- [x402lint Directory Changes Feed](https://www.zero.xyz/c/x402lint-directory-changes-feed-731746e8/llms.txt): $0.03/call via x402. Returns incremental changes to the x402lint graded directory since a given timestamp, including new listings, grade changes, and re-scans.
- [x402lint API Scanner](https://www.zero.xyz/c/x402lint-api-scanner-7cfb7790/llms.txt): $0.05/call via x402. Runs 25 compliance checks against an x402-enabled API origin and returns a grade, score, per-check results with fix instructions, and a shareable report URL.
- [x402lint Report (Cached)](https://www.zero.xyz/c/x402lint-report-cached-726ffe24/llms.txt): $0.02/call via x402. Returns a cached A–F conformance grade with 25-check scan results for an x402-enabled API origin, paid per scan in USDC via x402.
- [x402lint Directory Full Export](https://www.zero.xyz/c/x402lint-directory-full-export-d935d791/llms.txt): $0.1/call via x402. Returns the complete graded x402 directory as a single machine-readable export, including grade history, legitimacy signals, branding, verification status, and scan metadata for every listed origin (up to 10,000 records).

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)