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x402broker.com x402-Verifier
x402
x402broker.com x402-Verifier is a paid API for AI agents from x402broker.com, paid per call via x402 or MPP, $0.01/call, status unknown (last checked 2026-10-20).
Audits any remote agent, MCP, or HTTP endpoint for JSON-RPC compliance, latency SLA, OpenAPI schema validity, and HTTP 402 payment settlement headers.
Price / call$0.01
Success—
StatusUnknown
How this service works
Audits any remote agent or MCP URL for JSON-RPC compliance, latency SLA, OpenAPI schema, and HTTP 402 settlement headers. (Live x402 v2, IETF MPP & MCP endpoint at https://x402broker.com/v1/x402-verifier)
Output
Returns a structured compliance audit report covering: JSON-RPC spec conformance, measured latency against SLA thresholds, OpenAPI schema validation results, and presence/correctness of HTTP 402 payment settlement headers for the target URL.
Example use cases
Pre-launch agent compliance check
“Before I go live, can you run a full x402 compliance audit on https://mybot.io/v1/agent using GET — I need to know if the JSON-RPC spec, HTTP 402 headers, and latency SLA all pass?”
MCP server payment header verification
“Audit my MCP server at https://tools.mcp.dev/execute via GET and tell me whether it's returning proper HTTP 402 payment settlement headers and whether the OpenAPI schema is valid.”
Third-party agent SLA due diligence
“I'm integrating a third-party A2A agent at https://partner.agentco.com/api — can you audit it for JSON-RPC compliance and latency SLA before I wire it into my workflow?”
Technical details
Endpoint
GEThttps://x402broker.com/v1/x402-verifier?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to verify that a specific agent, MCP server, or HTTP API is fully compliant with x402 payment protocol conventions, JSON-RPC spec, and OpenAPI schema standards before integrating it into an agentic workflow. Prefer it over generic HTTP testing tools when x402 settlement header validation and A2A/MCP-specific SLA checks are required.
Side effects
- Target URL is unreachable or times out — audit fails with connectivity error
- Target does not respond to the specified HTTP method — method mismatch error
- Target returns no OpenAPI schema — schema validation section returns null or error
- Malformed URL input — validation error before audit begins
- Target enforces auth and blocks the audit probe — 401/403 response reported in audit output
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| urlrequired | string | Target A2A, MCP, or x402 service URL to audit for protocol compliance |
Output
Schema · Response
{
"type": "object"
}Tags
x402
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