# A2A, MCP & HTTP 402 Endpoint SLA Compliance Auditor

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

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

## Facts

- Endpoint: GET https://alpha-stream.agentdiet.dev/v1/preflight?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: alpha-stream.agentdiet.dev
- Website: https://alpha-stream.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/alpha-stream-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-bb48af8d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WmJG6dslo24U-89idyH2M

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 alpha-stream-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-bb48af8d
```

Example prompt: Can you run a compliance audit on https://my-agent.example.com/mcp — I need to know if it passes JSON-RPC checks, meets latency SLA, has valid OpenAPI schema, and has the right HTTP 402 settlement headers?

## When to prefer this

Use this endpoint when you need a single-call preflight compliance check of any A2A, MCP, or x402-enabled service URL, covering JSON-RPC spec conformance, SLA latency benchmarking, OpenAPI schema presence, and HTTP 402 settlement header correctness in one pass — especially useful before integrating a third-party agent or deploying your own MCP/A2A service to production

## Known failure modes

- Target URL is unreachable or returns a network error — audit fails with connectivity error
- Target URL does not expose an A2A, MCP, or x402 interface — partial or empty compliance report
- Malformed or missing URL parameter — 400 Bad Request
- Target service responds too slowly — latency SLA marked as failed
- Target returns non-standard HTTP responses that cannot be parsed — incomplete audit results

## 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://alpha-stream.agentdiet.dev/v1/preflight)

## Output

Returns a structured compliance report covering JSON-RPC protocol conformance, measured latency against SLA thresholds, OpenAPI schema validation results, and HTTP 402 / x402 v2 settlement header inspection for the provided 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/alpha-stream-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-bb48af8d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from alpha-stream.agentdiet.dev](https://www.zero.xyz/host/alpha-stream.agentdiet.dev/llms.txt)