# 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/v1/402-compliance?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-0bff7b39
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_tm-4PzGS1ipuYTGZE9aHl

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-0bff7b39
```

Example prompt: Can you audit this MCP endpoint for me — https://myagent.example.com/mcp — and tell me if it's JSON-RPC compliant, what the latency looks like, and whether it has proper HTTP 402 payment headers set up?

## When to prefer this

Choose this endpoint when you need to programmatically verify that an A2A agent endpoint, MCP server, or x402-enabled service meets protocol standards before integration or deployment. It is specifically suited for auditing JSON-RPC compliance, latency SLA, OpenAPI schema correctness, and HTTP 402 payment header configuration in a single call — covering the intersection of agent protocols and payment standards that generic uptime monitors or OpenAPI validators do not address together.

## Known failure modes

- Target URL is unreachable or times out — returns connectivity error
- Target URL does not implement any recognized protocol (A2A/MCP/x402) — returns unsupported protocol finding
- Malformed or missing URL parameter — returns validation error
- Target endpoint returns unexpected response format preventing analysis — returns parse error
- Rate limiting or access restrictions on target endpoint blocking audit probe

## 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/v1/402-compliance)

## Output

Returns a structured compliance report covering: JSON-RPC protocol conformance, measured latency against SLA thresholds, OpenAPI schema validation findings, and HTTP 402 / x402 v2 payment settlement header audit 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/domain-osint-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-0bff7b39/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)