# A2A, MCP & HTTP 402 Endpoint SLA Compliance Auditor

> A2A, MCP & HTTP 402 Endpoint SLA Compliance Auditor is a paid API for AI agents from json-repair.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 x402 URL for JSON-RPC compliance, latency SLA, OpenAPI schema validity, and HTTP 402 payment settlement headers

## Facts

- Endpoint: GET https://json-repair.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: json-repair.agentdiet.dev
- Website: https://json-repair.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/json-repair-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-fb30bca0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_p0YhRHuSr_mW00FWIFrKr

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 json-repair-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-fb30bca0
```

Example prompt: Can you run a compliance audit on my MCP server at https://my-agent.example.com/mcp — I want to know if it's JSON-RPC compliant, hitting latency SLAs, and has proper HTTP 402 payment headers set up?

## When to prefer this

Choose this endpoint when you need a single-call compliance audit specifically targeting A2A agents, MCP servers, or x402-enabled services — covering JSON-RPC correctness, latency SLA, OpenAPI schema, and HTTP 402 payment headers simultaneously. Prefer this over generic uptime monitors or API testers when the target is an agent or MCP endpoint that must conform to IETF MPP, x402, or MCP protocol standards.

## Known failure modes

- Target URL is unreachable or returns network error — audit fails with connection error
- Target URL returns non-JSON or malformed response — JSON-RPC compliance check fails
- Missing or malformed HTTP 402 headers — reported as non-compliant for x402 settlement
- Latency exceeds measurable thresholds or times out — SLA result marked as failed
- Invalid or missing url query parameter — returns 400 bad request
- Target URL has no OpenAPI spec — schema validation portion skipped or marked absent

## 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://json-repair.agentdiet.dev/v1/preflight)

## Output

Returns a structured compliance report including JSON-RPC protocol validity, measured latency against SLA thresholds, OpenAPI schema conformance findings, and HTTP 402 / x402 payment header presence and correctness for the audited 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/json-repair-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-fb30bca0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from json-repair.agentdiet.dev](https://www.zero.xyz/host/json-repair.agentdiet.dev/llms.txt)