# Services from x402-api-catalog.onrender.com on Zero

> x402-api-catalog.onrender.com serves 6 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-api-catalog.onrender.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/x402-api-catalog.onrender.com/health.json

## Services

- [PreFlight Checker – EVM Token Contract Safety Check](https://www.zero.xyz/c/preflight-checker-evm-token-contract-safety-check-fcd48b1f/llms.txt): $0.05/call via x402. Analyzes an EVM token contract address for honeypot risks, dangerous capabilities, impersonation of major tokens, and transfer taxes, returning a safety score and verdict.
- [PreFlight Checker – x402 Service Auditor](https://www.zero.xyz/c/preflight-checker-x402-service-auditor-18c96b70/llms.txt): $1/call via x402. Audits an x402-enabled API endpoint for the specific failure modes that cause aggregators to mark it as down or its 402 challenge as unreadable, returning concrete diagnoses and fixes.
- [PreFlight Checker – GitHub Repo Health](https://www.zero.xyz/c/preflight-checker-github-repo-health-63911285/llms.txt): $0.02/call via x402. Audits a GitHub repository and returns a health score with verdict, covering stars, forks, open issues, last commit age, archived status, and license.
- [PreFlight Checker — MCP Server Safety Audit](https://www.zero.xyz/c/preflight-checker-mcp-server-safety-audit-0a894951/llms.txt): $0.06/call via x402. Performs a live MCP handshake plus static analysis of every tool's name, description, and schema to detect tool-poisoning, prompt injection, and dangerous capability combinations, with optional GitHub supply-chain signal.
- [PreFlight Checker – Domain Liveness & DNS Audit](https://www.zero.xyz/c/preflight-checker-domain-liveness-dns-audit-b668c3eb/llms.txt): $0.02/call via x402. Checks whether a domain is live by resolving its DNS records (A, MX, NS, TXT), verifying mail routing, and testing HTTP reachability.
- [npm Trust Check](https://www.zero.xyz/c/npm-trust-check-1585d274/llms.txt): $0.02/call via x402. Returns a trust/risk score for an npm package based on registry age, weekly downloads, GitHub org/stars, and OSV.dev vulnerability data.

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)