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AgentIndex x402 Agent Health Check
x402
AgentIndex x402 Agent Health Check is a paid API for AI agents from x402.agentindex.world, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-29).
Audits a public agent, MCP, or x402 endpoint URL and returns an operational health score, discovery metadata, x402 payment config validity, and reachability verdict.
Price / call$0.001
Success—
StatusUnknown
How this service works
Fresh operational audit of any public agent or paid API: reachability, latency, HTTP status, x402 challenge, price/network/payTo, OpenAPI, agent card and MCP manifest. Returns a 0-100 score, verdict and issues. Try GET /agent-health/sample.
Output
Returns a JSON object with: operational boolean, verdict enum (operational/degraded/unreachable), integer health score (0-100), latency in milliseconds, x402 config details (network, version, price_usdc, valid flag), discovery metadata (OpenAPI path count, agent card skill count, MCP manifest status, x402 manifest status), list of issues found, and the origin URL.
Example use cases
Verify agent before integration
“Before I integrate this agent tool at https://x402.someagent.dev/tools into my workflow, can you check if it's reachable, what its health score is, and whether it has a valid x402 payment setup on Base?”
Debug a degraded MCP server
“My MCP server at https://mcp.myproject.io/mcp is acting up — can you probe it and tell me what issues are detected, what the latency looks like, and whether it's showing as operational or degraded?”
Confirm discovery metadata completeness
“Check https://x402.agentindex.world/search and tell me if its OpenAPI spec, agent card, and x402 manifest are all discoverable and returning 200, and what the overall discovery score looks like.”
Technical details
Endpoint
GEThttps://x402.agentindex.world/agent-health?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to programmatically verify that a specific agent, MCP server, or x402-enabled API endpoint is live, correctly configured for pay-per-call payments on Base, and discoverable via standard agent protocols. Prefer this over generic uptime monitors when you specifically need x402 payment config validation, agent card/OpenAPI/MCP manifest discovery checks, and an AI-agent-oriented health score in a single call.
Side effects
- Target URL is unreachable — verdict returns 'unreachable' with reachable:false and issues list
- Target lacks x402 headers — x402.valid returns false
- Discovery endpoints (OpenAPI, agent card, MCP manifest) not found — found:false in discovery object
- High latency causing degraded verdict
- Invalid or missing URL parameter causes request rejection
- Target URL returns unexpected HTTP status codes
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"url": "https://x402.agentindex.world/search",
"x402": {
"valid": true,
"network": "eip155:8453",
"version": 2,
"price_usdc": 0.0001
},
"score": 100,
"issues": [],
"origin": "https://x402.agentindex.world",
"target": {
"reachable": true,
"http_status": 402
},
"verdict": "operational",
"discovery": {
"openapi": {
"found": true,
"status": 200,
"path_count": 18
},
"agent_card": {
"found": true,
"status": 200,
"skill_count": 27
},
"mcp_manifest": {
"found": true,
"status": 200
},
"x402_manifest": {
"found": true,
"status": 200
}
},
"latency_ms": 84,
"operational": true
}
}Tags
x402
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