# A2A, MCP & HTTP 402 Endpoint SLA Compliance Auditor

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

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

## Facts

- Endpoint: GET https://shopify-spy.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: shopify-spy.agentdiet.dev
- Website: https://shopify-spy.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/shopify-spy-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-6146e570
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_kdNNk6Wy63if6XCP5n5If

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 shopify-spy-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-6146e570
```

Example prompt: Can you audit the MCP endpoint at https://example-agent.com/mcp and tell me if it passes JSON-RPC compliance, meets latency SLA, has a valid OpenAPI schema, and supports HTTP 402 settlement headers?

## When to prefer this

Use this endpoint when you need to verify that a remote agent, MCP server, or x402-enabled service meets protocol standards before integration, marketplace listing, or production deployment — especially when JSON-RPC compliance, latency SLA, OpenAPI schema correctness, and HTTP 402 payment header validity all need to be assessed in a single call

## Known failure modes

- Target URL is unreachable or times out — returns connectivity error
- URL does not expose a valid JSON-RPC or MCP interface — compliance check fails with protocol mismatch
- OpenAPI schema is absent or malformed at the target — schema validation returns failure
- HTTP 402 headers missing or incorrectly formatted — payment compliance flagged as non-compliant
- Invalid or malformed URL provided in request — returns 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://shopify-spy.agentdiet.dev/v1/mcp-security-scan)

## Output

Returns a structured audit report covering JSON-RPC compliance status, measured latency vs SLA thresholds, OpenAPI schema validity, and HTTP 402 payment header presence and 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/shopify-spy-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-6146e570/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from shopify-spy.agentdiet.dev](https://www.zero.xyz/host/shopify-spy.agentdiet.dev/llms.txt)