# A2A, MCP & HTTP 402 Endpoint SLA Compliance Auditor

> A2A, MCP & HTTP 402 Endpoint SLA Compliance Auditor is a paid API for AI agents from github-audit.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).

Audits a remote A2A agent, MCP server, or x402 service URL for JSON-RPC compliance, latency SLA, OpenAPI schema validity, and HTTP 402 payment settlement headers.

## Facts

- Endpoint: GET https://github-audit.agentdiet.dev/v1/mpp-verifier?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: github-audit.agentdiet.dev
- Website: https://github-audit.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/github-audit-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-3afff66a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2UobVHz-Rq7NDzM2eu2z9

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability github-audit-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-3afff66a
```

Example prompt: Can you audit https://my-agent.example.com/api/v1 to check if it's properly JSON-RPC compliant, meets latency SLA, and has correct HTTP 402 settlement headers set up?

## When to prefer this

Use this endpoint when you need to verify that a specific A2A agent, MCP server, or x402-gated service URL is correctly implementing the relevant protocols (JSON-RPC, IETF MPP, OpenAPI, HTTP 402) before integrating with it or deploying it in production. Prefer this over generic HTTP health checks or ping tools when protocol-level compliance — especially x402 payment headers and MCP/A2A spec conformance — is what matters.

## Known failure modes

- Target URL is unreachable or times out — audit cannot complete
- Target URL returns non-JSON or malformed responses — JSON-RPC compliance check fails
- Missing or invalid HTTP 402 headers — reported as non-compliant
- OpenAPI schema absent or malformed at target — schema validation skipped or flagged
- URL parameter missing or empty — request rejected with validation error

## 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://github-audit.agentdiet.dev/v1/mpp-verifier)

## Output

Returns a structured compliance audit report covering JSON-RPC protocol conformance, measured latency against SLA thresholds, OpenAPI schema validity, and HTTP 402/x402 payment settlement header correctness for the target URL.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "url"
 ],
 "properties": {
  "url": {
   "type": "string",
   "minLength": 1,
   "description": "Target A2A, MCP, or x402 service URL to audit for protocol compliance"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/github-audit-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-3afff66a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from github-audit.agentdiet.dev](https://www.zero.xyz/host/github-audit.agentdiet.dev/llms.txt)