# A2A, MCP & HTTP 402 Endpoint SLA Compliance Auditor

> A2A, MCP & HTTP 402 Endpoint SLA Compliance Auditor is a paid API for AI agents from polymarket-odds.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 adherence, OpenAPI schema validity, and HTTP 402 payment settlement headers.

## Facts

- Endpoint: GET https://polymarket-odds.agentdiet.dev/v1/x402-verifier?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: polymarket-odds.agentdiet.dev
- Website: https://polymarket-odds.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/polymarket-odds-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-6fdeedda
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_IrhKYCoUBQco0r6XCNjUk

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 polymarket-odds-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-6fdeedda
```

Example prompt: Can you audit https://myagent.example.com/mcp for JSON-RPC compliance, latency SLA, and HTTP 402 payment headers and tell me if it passes?

## When to prefer this

Use this endpoint when you need to programmatically verify that an A2A, MCP, or x402 agent endpoint meets protocol standards before integration, deployment, or marketplace listing — especially when HTTP 402 payment header compliance and JSON-RPC correctness both need to be checked in a single call.

## Known failure modes

- Target URL is unreachable or times out — audit fails with connection error
- Invalid or malformed URL submitted — returns validation error
- Target endpoint does not expose JSON-RPC or OpenAPI — partial compliance report with missing fields
- HTTP 402 headers absent on target — flagged as non-compliant in settlement section
- Rate limiting or authentication on target URL blocks audit — incomplete results returned

## 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://polymarket-odds.agentdiet.dev/v1/x402-verifier)

## Output

Returns a compliance report object covering JSON-RPC protocol conformance, measured latency against SLA thresholds, OpenAPI schema validation results, and HTTP 402/x402 settlement header inspection for the submitted 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/polymarket-odds-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-6fdeedda/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from polymarket-odds.agentdiet.dev](https://www.zero.xyz/host/polymarket-odds.agentdiet.dev/llms.txt)