# Services from ontarioprotocol.com on Zero

> ontarioprotocol.com serves 8 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/ontarioprotocol.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/ontarioprotocol.com/health.json

## Services

- [Ontario Protocol x402 Implementation Audit](https://www.zero.xyz/c/ontario-protocol-x402-implementation-audit-4bd841a0/llms.txt): $0.01/call via x402. Audits an x402 endpoint or repository for HTTP 402 compliance, manifest correctness, pricing configuration, and payment readiness before an agent or developer pays or deploys.
- [Ontario Protocol x402 Pre-Payment Decision Check](https://www.zero.xyz/c/ontario-protocol-x402-pre-payment-decision-check-5d8a9d25/llms.txt): $0.002/call via x402. Probes a live x402 endpoint and returns an allow/deny payment decision with readiness evidence, price verification, and policy compliance before an AI agent pays.
- [Ontario Protocol x402 Service Listing API](https://www.zero.xyz/c/ontario-protocol-x402-service-listing-api-3d24ef4b/llms.txt): $0.5/call via x402. Registers and lists a paid x402 HTTP endpoint on the Ontario Protocol directory so AI agents and buyers can discover, audit, and pay for it
- [Ontario Protocol x402 Demand Authenticity Report](https://www.zero.xyz/c/ontario-protocol-x402-demand-authenticity-report-93c8615a/llms.txt): $0.02/call via x402. Analyzes blockchain transaction hashes and addresses to verify the authenticity and independence of x402 payment demand events before an agent pays
- [Ontario Protocol x402 Agent Trust Scanner](https://www.zero.xyz/c/ontario-protocol-x402-agent-trust-scanner-57ec71d0/llms.txt): $0.01/call via x402. Scans an x402-enabled endpoint and returns a trust report with signals and score covering HTTP 402 compliance, manifest presence, pricing, and public readiness
- [Ontario Protocol x402 Agent Reputation Checker](https://www.zero.xyz/c/ontario-protocol-x402-agent-reputation-checker-0fdee5e4/llms.txt): $0.001/call via x402. Retrieves reputation and readiness data for a given agent ID against the x402 payment protocol, helping builders verify agent compliance before payments are made.
- [Ontario Protocol x402 Endpoint Checker](https://www.zero.xyz/c/ontario-protocol-x402-endpoint-checker-3e0a8565/llms.txt): $0.1/call via x402. Tests and validates x402-compliant API endpoints for HTTP 402 responses, manifests, pricing, and public readiness before an agent pays
- [Ontario Protocol x402 Listing Refresh](https://www.zero.xyz/c/ontario-protocol-x402-listing-refresh-362540c2/llms.txt): $0.1/call via x402. Refreshes an existing Ontario provider listing profile, re-running HTTP 402 readiness checks, Coinbase Bazaar retrieval, and agent-payment-policy validation to diagnose why agents aren't buying a given x402 API.

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)