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A2A, MCP & HTTP 402 Endpoint SLA Compliance Auditor
A2A, MCP & HTTP 402 Endpoint SLA Compliance Auditor is a paid API for AI agents from preflight.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).
Audits a remote A2A, MCP, or x402 service 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://preflight.agentdiet.dev/v1/x402-mpp-paywall-verifier)
Output
Returns a structured compliance report covering JSON-RPC protocol correctness, measured latency against SLA thresholds, OpenAPI schema validation findings, and HTTP 402 / x402 v2 settlement header presence and correctness for the target URL.
Example use cases
Pre-integration MCP tool compliance check
“Before I wire in this third-party MCP tool, can you check https://tools.example.com/v1/mcp for JSON-RPC compliance, latency SLA, and whether it has proper OpenAPI schema — I want to know if it meets protocol standards?”
x402 paywall header verification
“I set up an x402 paywall at https://myservice.agentapi.io/v1/endpoint — can you audit it to make sure the HTTP 402 settlement headers are correctly configured and it passes x402 v2 compliance?”
Agent fleet endpoint health audit
“I'm running a fleet of autonomous agents and I need to audit https://agent-hub.internal.io/a2a for SLA latency compliance and JSON-RPC correctness — can you run a full protocol compliance check on it?”
Technical details
Endpoint
GEThttps://preflight.agentdiet.dev/v1/x402-mpp-paywall-verifier?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to verify that a remote A2A agent, MCP tool, or x402-enabled service URL meets protocol compliance standards before integration or deployment — specifically when you need simultaneous checks across JSON-RPC correctness, latency SLA, OpenAPI schema, and HTTP 402 settlement headers in a single call. Prefer it over manual curl-based probing or generic uptime monitors when agent protocol compliance (MCP, x402 v2, IETF MPP) is the primary concern.
Side effects
- Target URL is unreachable or times out — audit fails with connectivity error
- Target URL does not respond with expected protocol (not A2A/MCP/x402) — compliance checks return unsupported protocol
- Malformed or missing OpenAPI schema at target — schema validation section returns error or skipped
- HTTP 402 headers absent or malformed — header audit reports non-compliant with x402 v2 spec
- Invalid or empty url parameter supplied — returns validation error
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"
}Reviews
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