# A2A, MCP & HTTP 402 Endpoint SLA Compliance Auditor

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

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

## Facts

- Endpoint: GET https://agentdiet.dev/v1/mcp-security-scan?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: agentdiet.dev
- Website: https://agentdiet.dev
- Canonical page: https://www.zero.xyz/c/agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-auditor-740c7236
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_G5s0jYG-BOT_iz_GVzq-h

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 agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-auditor-740c7236
```

Example prompt: Can you audit https://myagent.example.com/mcp for JSON-RPC compliance, latency SLA, and HTTP 402 payment header correctness?

## When to prefer this

Choose this endpoint when you need to programmatically verify that a specific A2A agent, MCP server, or x402-gated API URL is correctly implementing JSON-RPC, OpenAPI schema, latency SLAs, and HTTP 402 payment headers — especially before integrating a third-party agent or shipping your own to production. Prefer it over generic uptime monitors or HTTP health checkers when agent protocol compliance (MCP, A2A, x402, IETF MPP) is specifically what matters.

## Known failure modes

- Target URL unreachable or times out — audit fails with connection error
- Malformed or non-HTTP URL input — validation error returned
- Target endpoint returns unexpected content type — partial compliance results
- HTTP 402 headers absent or malformed — flagged as non-compliant
- Rate limit exceeded — error response if too many audits requested in short window

## 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/mcp-security-scan)

## Output

Returns a structured compliance report covering JSON-RPC conformance, measured latency against SLA thresholds, OpenAPI schema validity, and HTTP 402 payment settlement header presence and correctness for the submitted 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/agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-auditor-740c7236/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentdiet.dev](https://www.zero.xyz/host/agentdiet.dev/llms.txt)