# A2A, MCP & HTTP 402 Endpoint SLA Compliance Auditor

> A2A, MCP & HTTP 402 Endpoint SLA Compliance Auditor is a paid API for AI agents from domain-osint.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://domain-osint.agentdiet.dev/v1/bazaar-verifier?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: domain-osint.agentdiet.dev
- Website: https://domain-osint.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/domain-osint-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-cb010cf8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dzIhzVvZ4-x2Vx3A4cSxP

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 domain-osint-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-cb010cf8
```

Example prompt: Can you audit https://myagent.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 a remote A2A agent, MCP server, or x402-enabled service meets protocol compliance standards — specifically JSON-RPC correctness, latency SLA, OpenAPI schema validity, and HTTP 402 settlement header conformance. Prefer it over generic HTTP health checkers when the target is an agent or MCP endpoint and you need structured compliance output rather than a simple ping.

## Known failure modes

- Target URL is unreachable or times out — returns error indicating connection failure
- Target URL returns an unexpected protocol or malformed response — compliance checks fail with details
- Invalid or missing URL parameter — returns 400-level validation error
- Target service blocks probes or returns firewall/403 responses — audit results may be incomplete
- x402 headers absent on a non-payment endpoint — 402 check returns not applicable

## 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://domain-osint.agentdiet.dev/v1/bazaar-verifier)

## Output

Returns a compliance report object including JSON-RPC spec adherence, measured latency against SLA thresholds, OpenAPI schema validation results, and HTTP 402 / x402 settlement header inspection findings 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/domain-osint-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-cb010cf8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from domain-osint.agentdiet.dev](https://www.zero.xyz/host/domain-osint.agentdiet.dev/llms.txt)