# Services from x402.fuchss.app on Zero

> x402.fuchss.app serves 14 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/x402.fuchss.app
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/x402.fuchss.app/health.json

## Services

- [x402.fuchss.app — Watch/Renew x402 Endpoint Monitor](https://www.zero.xyz/c/x402-fuchss-app-watch-renew-x402-endpoint-monitor-9f830e5e/llms.txt): $0.2/call via x402. Renews or creates a 30-day monitoring subscription for a single x402 endpoint, returning poll/webhook delivery details and a one-time secret for bearer-authenticated management.
- [x402.fuchss.app Bulk x402 Trust Score (10 endpoints)](https://www.zero.xyz/c/x402-fuchss-app-bulk-x402-trust-score-10-endpoints-141d25bf/llms.txt): $0.045/call via x402. Scores up to 10 x402 endpoints in a single paid call, returning full trust reports (score, grade, breakdown, flags, on-chain stats) for each.
- [x402.fuchss.app Bulk x402 Trust Score (500-endpoint tier)](https://www.zero.xyz/c/x402-fuchss-app-bulk-x402-trust-score-500-endpoint-tier-15440c66/llms.txt): $0.5/call via x402. Batch-scores up to 500 x402 endpoint URLs in a single paid call, returning full trust reports (score, grade, breakdown, flags, on-chain stats) for each found resource.
- [x402.fuchss.app — x402 Endpoint History & Trust Scores](https://www.zero.xyz/c/x402-fuchss-app-x402-endpoint-history-trust-scores-db5a925f/llms.txt): $0.02/call via x402. Returns historical uptime, 402-compliance, price history, and on-chain USDC settlement data for a specific x402 resource URL over a configurable lookback window
- [x402.fuchss.app Similar Endpoints Finder](https://www.zero.xyz/c/x402-fuchss-app-similar-endpoints-finder-35f2dc1f/llms.txt): $0.005/call via x402. Given an x402 resource URL, returns semantically similar endpoints that have a higher trust score than the subject, helping agents avoid mediocre services
- [x402.fuchss.app Bulk Trust Score (200-endpoint tier)](https://www.zero.xyz/c/x402-fuchss-app-bulk-trust-score-200-endpoint-tier-e25a586f/llms.txt): $0.4/call via x402. Returns full x402 trust reports for up to 200 endpoint URLs in a single paid batch call, using cached or freshly recomputed scores.
- [x402.fuchss.app Bulk x402 Trust Score (50 endpoints)](https://www.zero.xyz/c/x402-fuchss-app-bulk-x402-trust-score-50-endpoints-2db19731/llms.txt): $0.2/call via x402. Batch-scores up to 50 x402 endpoints in a single paid call, returning full trust reports including score, grade, component breakdowns, flags, and 30-day on-chain stats for each.
- [x402.fuchss.app Trust Score API](https://www.zero.xyz/c/x402-fuchss-app-trust-score-api-0bebcc7e/llms.txt): $0.005/call via x402. Returns a 0-100 trust and reliability score for any x402 pay-per-call endpoint, based on 30-day uptime, compliance, latency, and on-chain settlement volume.
- [x402.fuchss.app x402 Quote Audit — Comparative Trust Score](https://www.zero.xyz/c/x402-fuchss-app-x402-quote-audit-comparative-trust-score-d5ef6f82/llms.txt): $0.017624/call via x402. Probes and compares two x402 resource URLs, returning trust and reliability scores covering uptime, 402-envelope compliance, price history, and on-chain USDC settlement volume.
- [x402.fuchss.app Watch Subscription Renewal](https://www.zero.xyz/c/x402-fuchss-app-watch-subscription-renewal-85245bb1/llms.txt): $0.2/call via x402. Renews an existing endpoint watch subscription, refreshing its expiry and optionally updating delivery targets and event filters for continuous x402 trust monitoring.
- [x402.fuchss.app — x402 Payment Trace](https://www.zero.xyz/c/x402-fuchss-app-x402-payment-trace-37edc2f0/llms.txt): $0.011673/call via x402. Traces and decodes an on-chain USDC payment transaction to verify it was a valid x402 protocol settlement, returning compliance and settlement details.
- [x402.fuchss.app — Bulk Trust Scores for 100 x402 Endpoints](https://www.zero.xyz/c/x402-fuchss-app-bulk-trust-scores-for-100-x402-endpoints-ddd9a4c4/llms.txt): $0.325/call via x402. Returns trust scores, grades, uptime data, and reliability metrics for up to 100 x402 endpoints in a single paid call
- [x402.fuchss.app — Watch Endpoint 30-Day Monitoring](https://www.zero.xyz/c/x402-fuchss-app-watch-endpoint-30-day-monitoring-f198c45b/llms.txt): $0.2/call via x402. Registers a 30-day continuous monitoring watch on a specified x402 endpoint, delivering uptime, compliance, and settlement alerts via webhook or Slack.
- [x402 Trust Semantic Search](https://www.zero.xyz/c/x402-trust-semantic-search-2a0f68e3/llms.txt): $0.001/call via x402. Search the x402 endpoint catalog by natural language query and receive ranked matches with trust grades and similarity scores

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)