# 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 any remote agent, MCP, 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/preflight?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-4ee96db7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_gov0i70gSEf1jsc4AU6RW

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-4ee96db7
```

Example prompt: Run a full compliance audit on https://my-agent.example.com/mcp — I want to know if it passes JSON-RPC validation, meets latency SLA, has a valid OpenAPI schema, and correctly implements HTTP 402 payment headers.

## When to prefer this

Choose this endpoint when you need to programmatically verify that an A2A, MCP, or x402 service URL meets protocol compliance standards — particularly JSON-RPC conformance, latency SLA thresholds, OpenAPI schema validity, and HTTP 402 payment settlement headers — before integrating with or deploying an agent-facing service.

## Known failure modes

- Target URL is unreachable or times out — returns connectivity error
- Invalid or malformed URL input — returns validation error
- Target endpoint returns non-standard HTTP errors — partial compliance report with warnings
- Endpoint does not implement JSON-RPC at all — flags as non-compliant
- HTTP 402 headers absent — noted as missing in report

## 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/preflight)

## Output

Returns a structured compliance report covering: JSON-RPC validity, latency SLA measurements, OpenAPI schema conformance, and HTTP 402/x402 settlement header presence and correctness for the audited endpoint 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-4ee96db7/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)