# A2A, MCP & HTTP 402 Endpoint SLA Compliance Auditor

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

Audits any A2A, MCP, or x402 service URL for JSON-RPC compliance, latency SLA adherence, OpenAPI schema validity, and HTTP 402 payment settlement headers

## Facts

- Endpoint: GET https://mcp-compiler.agentdiet.dev/v1/usdc-quote-audit?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: mcp-compiler.agentdiet.dev
- Website: https://mcp-compiler.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/mcp-compiler-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-0dcc5083
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_u7cSujOrWPExPMqSFbQkK

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 mcp-compiler-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-0dcc5083
```

Example prompt: Can you audit the MCP endpoint at https://my-agent.example.com/mcp and tell me if it's JSON-RPC compliant, whether it passes latency SLA, and whether the HTTP 402 payment headers are correctly configured?

## When to prefer this

Choose this endpoint when you need to programmatically verify that an A2A agent, MCP server, or x402 payment-gated API meets protocol standards — especially before integrating a third-party agent, deploying your own MCP server to production, or confirming HTTP 402 / x402 settlement header correctness. Prefer this over generic HTTP health-check tools when JSON-RPC compliance, OpenAPI schema validity, and IETF MPP / x402 payment protocol adherence are all required in a single audit call.

## Known failure modes

- Target URL unreachable or times out — audit fails with connectivity error
- Invalid or malformed URL provided — returns validation error
- Target endpoint returns non-standard responses that cannot be parsed for compliance
- Rate limiting or auth on target endpoint blocks the probe
- x402 headers absent on non-payment-gated URLs — partial audit result

## 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://mcp-compiler.agentdiet.dev/v1/usdc-quote-audit)

## Output

Returns a structured compliance report covering JSON-RPC protocol adherence, measured latency against SLA thresholds, OpenAPI schema validity, and HTTP 402 / x402 payment settlement header correctness for the audited endpoint

## 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/mcp-compiler-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-0dcc5083/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mcp-compiler.agentdiet.dev](https://www.zero.xyz/host/mcp-compiler.agentdiet.dev/llms.txt)