# 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 agent, MCP server, or HTTP 402 service URL for JSON-RPC compliance, latency SLA adherence, OpenAPI schema validity, and x402 payment settlement headers

## Facts

- Endpoint: GET https://alpha-stream.agentdiet.dev/v1/mpp-verifier?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-93cc49bc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_K243CiTK2BGHITb4m_iYR

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-93cc49bc
```

Example prompt: Can you audit my MCP server at https://my-agent.example.com/mcp and tell me if it's JSON-RPC compliant, whether it meets latency SLA, and whether its HTTP 402 payment headers are set up correctly?

## When to prefer this

Choose this endpoint when you need to programmatically verify that a remote agent, MCP server, or HTTP 402 service URL conforms to A2A, JSON-RPC, OpenAPI, or x402/IETF MPP specifications — especially useful before deploying agent infrastructure to production or when debugging protocol compliance failures. Prefer this over generic HTTP health-check tools when you specifically need protocol-layer compliance signals (JSON-RPC correctness, x402 headers, latency SLA) rather than simple uptime checks.

## Known failure modes

- Target URL is unreachable or returns a network error
- Target URL does not implement any recognized protocol (A2A, MCP, x402), resulting in an inconclusive report
- Latency measurement may vary based on network conditions at audit time
- Malformed or non-standard OpenAPI schemas may produce partial results
- Rate limiting or auth requirements on the target endpoint may block the 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://alpha-stream.agentdiet.dev/v1/mpp-verifier)

## Output

Returns a structured compliance report indicating whether the target URL passes JSON-RPC protocol compliance, meets latency SLA thresholds, has a valid OpenAPI schema, and correctly implements HTTP 402 / x402 v2 settlement headers, along with specific findings for each check.

## 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-93cc49bc/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)