# Services from robots-check.quietworklabs.workers.dev on Zero

> robots-check.quietworklabs.workers.dev serves 3 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/robots-check.quietworklabs.workers.dev
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/robots-check.quietworklabs.workers.dev/health.json

## Services

- [Robots.txt & AI Crawler Checker](https://www.zero.xyz/c/robots-txt-ai-crawler-checker-8cfae3a4/llms.txt): $0.001/call via x402. Checks whether a URL is crawlable by a given user-agent under robots.txt rules, identifies which AI crawlers (GPTBot, ClaudeBot, etc.) are blocked, and reads noindex/noai directives and sitemaps
- [Robots.txt & AI Crawler Checker](https://www.zero.xyz/c/robots-txt-ai-crawler-checker-6cb4e172/llms.txt): $0.002/call via x402. Checks which AI crawlers (GPTBot, ClaudeBot, PerplexityBot, Google-Extended, etc.) are blocked by a URL's robots.txt, page-level directives, and llms.txt
- [XML Sitemap Validator](https://www.zero.xyz/c/xml-sitemap-validator-3fc01b2e/llms.txt): $0.002/call via x402. Validates an XML sitemap for a given URL, checking structure, duplicate entries, HTTP status, and loc count

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)