# A2A, MCP & HTTP 402 Endpoint SLA Compliance Auditor

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

Audits a 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://sec-intel.agentdiet.dev/v1/paywall-scanner?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: sec-intel.agentdiet.dev
- Website: https://sec-intel.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/sec-intel-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-15bab245
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_PLo3DQn_cgwql4r4IsE5b

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 sec-intel-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-15bab245
```

Example prompt: Can you audit the MCP endpoint at https://my-agent-service.example.com/mcp and tell me whether it's JSON-RPC compliant, what its latency looks like, and whether it has valid HTTP 402 settlement headers?

## When to prefer this

Choose this endpoint when you need to programmatically verify that a remote A2A agent, MCP server, or x402-enabled service is protocol-compliant before integration, deployment, or listing — especially when you need a single call that simultaneously checks JSON-RPC conformance, latency SLA, OpenAPI schema validity, and HTTP 402 micropayment header correctness. Prefer it over manual curl tests or generic HTTP probers when the target is specifically an agent or MCP endpoint in the A2A/x402 ecosystem.

## Known failure modes

- Target URL unreachable or returns a connection timeout — audit fails with network error
- Target URL does not expose a recognizable A2A/MCP/x402 interface — compliance results may be incomplete or indeterminate
- Malformed or missing OpenAPI spec at target — schema validation section returns null or error
- HTTP 402 headers absent — payment compliance flagged as non-conformant
- Invalid or non-URL value passed in the url parameter — 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://sec-intel.agentdiet.dev/v1/paywall-scanner)

## Output

Returns a structured compliance report covering JSON-RPC conformance, measured latency against SLA thresholds, OpenAPI schema validity, and the presence and correctness of HTTP 402 / x402 payment settlement headers 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/sec-intel-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-15bab245/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from sec-intel.agentdiet.dev](https://www.zero.xyz/host/sec-intel.agentdiet.dev/llms.txt)