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x402broker Paywall Check — HTTP 402 & MCP Endpoint Compliance Auditor
x402
x402broker Paywall Check — HTTP 402 & MCP Endpoint Compliance Auditor 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 a remote agent, MCP, or HTTP URL 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/paywall-check)
Output
Returns a structured compliance report covering: JSON-RPC protocol conformance, measured latency against SLA thresholds, OpenAPI schema validity, and presence/correctness of HTTP 402 payment settlement headers for the audited URL
Example use cases
Verify agent payment wall before launch
“Before I go live, can you check that https://api.mybotservice.com/v1/chat correctly returns HTTP 402 headers and is JSON-RPC compliant? Use a GET request to audit it.”
Monitor MCP server SLA compliance
“Audit my MCP server at https://mcp.myplatform.io/tools via GET — I need to know if it passes latency SLA requirements and has valid OpenAPI schema declarations.”
Debug broken x402 paywall endpoint
“Something seems off with my x402 paywall at https://broker.myapp.xyz/v1/pay — can you run a compliance audit on it via GET and tell me what's failing in the 402 headers or JSON-RPC responses?”
Technical details
Endpoint
GEThttps://x402broker.com/v1/paywall-check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to verify that a remote agent, MCP server, or HTTP API endpoint correctly implements the HTTP 402 payment protocol, JSON-RPC spec, OpenAPI schema, and latency SLAs — especially useful before deploying or integrating a new agent endpoint, debugging a broken paywall, or periodically monitoring compliance of live services
Side effects
- Target URL is unreachable or times out — returns error indicating host is unavailable
- Invalid or malformed URL provided — returns validation error
- Target returns unexpected content type — compliance check may be partial
- Rate limit exceeded — returns 429
- Payment not settled — returns HTTP 402 requiring USDC payment
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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