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AgentDiet Paywall Check — HTTP 402 & MCP SLA Compliance Auditor
x402
AgentDiet Paywall Check — HTTP 402 & MCP SLA Compliance Auditor is a paid API for AI agents from agentdiet.dev, paid per call via x402 or MPP, $0.01/call, status unknown (last checked 2026-10-20).
Audits a remote agent, MCP, or HTTP endpoint for JSON-RPC compliance, latency SLA, OpenAPI schema validity, and HTTP 402 payment header conformance.
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://agentdiet.dev/v1/paywall-check)
Output
Returns an audit report covering: JSON-RPC protocol compliance status, measured latency against SLA thresholds, OpenAPI schema validity, and correctness of HTTP 402 payment/settlement headers for the target URL.
Example use cases
Pre-integration A2A endpoint compliance check
“Before I wire this new A2A agent into my swarm, can you audit https://partner-agent.xyz/v1/execute via GET and tell me if it's properly handling HTTP 402 settlement headers and JSON-RPC?”
MCP server SLA verification
“I need to verify that the MCP server at https://mcp.mytoolserver.com/rpc meets latency SLA standards and has a valid OpenAPI schema — can you run a compliance check on it?”
x402 paywall conformance testing
“Can you check if https://api.agentmarket.io/v1/search correctly implements the x402 payment protocol, including the right response headers for HTTP 402 and proper settlement flow?”
Technical details
Endpoint
GEThttps://agentdiet.dev/v1/paywall-check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to programmatically verify that a remote agent, MCP server, or HTTP API correctly implements the HTTP 402 (x402) payment protocol, JSON-RPC spec, and latency SLAs — especially before integrating it into an agent swarm or marketplace listing. Prefer this over manual curl-based testing or generic HTTP monitoring tools when you specifically need structured compliance output against A2A/MCP/x402 standards.
Side effects
- Target URL is unreachable or times out — audit fails with connectivity error
- Target URL does not return any recognizable agent/MCP response — partial or inconclusive audit
- Invalid or missing URL query parameter — request rejected with validation error
- Target URL blocks probing requests (e.g. IP allowlist) — false negative compliance result
- Malformed JSON-RPC response at target — compliance check flags as non-compliant even if intentional
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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