# 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-security.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-23).

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

## Facts

- Endpoint: POST https://mcp-security.agentdiet.dev/v1/bazaar-verifier?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Provider: mcp-security.agentdiet.dev
- Website: https://mcp-security.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/mcp-security-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-28b34e3c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_vALJiWs4s_Z07eGSBvXD0

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-security-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-28b34e3c -d '<json body>'
```

Example prompt: Can you audit https://my-agent.example.com/mcp for JSON-RPC compliance, latency SLA, and HTTP 402 settlement headers and tell me if it passes?

## When to prefer this

Choose this endpoint when you need to programmatically verify that an A2A, MCP, or x402 service URL meets protocol standards before listing it on a marketplace, integrating it into an agent pipeline, or troubleshooting payment or compliance issues. It is specifically suited for JSON-RPC, OpenAPI, and HTTP 402 settlement header checks in a single call, rather than a generic uptime monitor or a manual curl test.

## Known failure modes

- Target URL unreachable or returns non-2xx — audit fails with connectivity error
- Target does not respond to JSON-RPC probes — compliance check returns non-conformant
- Malformed or missing OpenAPI schema at target — schema section reports validation failure
- HTTP 402 headers absent or malformed — payment compliance flagged as failing
- Latency exceeds SLA threshold — SLA check marked as failed
- Invalid or non-URL input — 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://mcp-security.agentdiet.dev/v1/bazaar-verifier)

## Output

Returns a structured audit report covering JSON-RPC protocol conformance, measured latency against SLA thresholds, OpenAPI schema validity findings, and HTTP 402/x402 payment settlement header inspection results 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/mcp-security-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-28b34e3c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mcp-security.agentdiet.dev](https://www.zero.xyz/host/mcp-security.agentdiet.dev/llms.txt)