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Phion Agent Inspector
x402
Phion Agent Inspector is a paid API for AI agents from phion.systems, paid per call via x402, $0.009/call, status unknown (last checked 2026-10-30).
Runs independent due diligence on an AI-agent service endpoint, checking x402, A2A, MCP, OpenAPI, ERC-8004, reachability, and returning signed evidence
Price / call$0.009
Success—
StatusUnknown
How this service works
Independent due diligence for AI-agent services: x402, A2A, MCP, OpenAPI, ERC-8004, reachability and signed evidence
Output
A structured due diligence report covering reachability status, protocol compliance results (x402, A2A, MCP, OpenAPI, ERC-8004), and cryptographically signed evidence attesting to the inspection findings and their freshness.
Example use cases
Vetting a new agentic marketplace listing
“Before I integrate this agent service from the bazaar, can you inspect https://newagent.market/v1/service and check its x402 and OpenAPI compliance, reachability, and give me a signed evidence receipt I can rely on?”
Auditing an MCP endpoint before deployment
“I'm about to plug this MCP endpoint at https://partner.ai/mcp/tool into my workflow — can you do a full independent audit of it, covering MCP compatibility, A2A support, and reachability, and return signed proof of the results?”
Verifying ERC-8004 compliance for a payment agent
“Can you verify whether the agent at https://paymentbot.xyz/v1/agent actually complies with ERC-8004 and x402, and give me a signed report I can show my team as due diligence before we send any payments through it?”
Technical details
Endpoint
POSThttps://phion.systems/v1/paid/inspect-agent?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need independent, third-party verification of an AI-agent service before integrating or transacting with it — especially when signed, tamper-evident evidence is required for compliance or audit trails. Prefer it over self-reported documentation or generic uptime monitors when you need multi-protocol checks (x402, A2A, MCP, OpenAPI, ERC-8004) in a single signed report, and when provenance of the evidence matters.
Side effects
- Target agent URL is unreachable or returns non-200 responses — reachability check fails with error detail
- Target endpoint does not expose any recognized protocol (x402/A2A/MCP/OpenAPI/ERC-8004) — compliance results return as not-detected
- Malformed or missing input URL — request rejected with validation error
- Signing infrastructure unavailable — signed evidence cannot be produced, partial result returned
- Target URL is rate-limiting or blocking inspection probes — incomplete compliance data returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| outputrequired | object |
Output
Schema · Response
{
"type": "json"
}Tags
x402
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