# KEVAREMESH x402 Endpoint Verification

> KEVAREMESH x402 Endpoint Verification is a paid API for AI agents from kevaremesh-web.vercel.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-02).

Verifies the metadata, OpenAPI documentation, and safety posture of a public x402-payment endpoint without signing or submitting any payment.

## Facts

- Endpoint: POST https://kevaremesh-web.vercel.app/api/x402/x402-endpoint-verification-cdp-x402-endpoint-verification?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/kevaremesh-x402-endpoint-verification-a8e5304e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4nKt-x3WTlV7tW7yHNUKb

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 kevaremesh-x402-endpoint-verification-a8e5304e -d '<json body>'
```

Example prompt: Can you verify whether https://merchant.example/api is a properly set up x402 endpoint — check its metadata, OpenAPI docs, and confirm it won't move any funds or sign any payments during the check?

## When to prefer this

Use this endpoint when you need to pre-screen or audit any x402-protocol endpoint before your agent integrates or pays for it. It is the right choice when you want a zero-risk safety check (no payment signed, no funds moved) that validates OpenAPI compliance, payment metadata, and endpoint liveness. Prefer it over manual inspection when building agent marketplaces, automated capability registries, or CI pipelines that gatekeep x402 endpoints.

## Known failure modes

- Unreachable URL returns failed metadata check with no score
- Endpoint missing x-payment-info header causes openapi.has_x_payment_info=false
- Non-x402 endpoints may return low scores or invalid verdict
- Private/local network URLs are blocked by safety rules
- Malformed OpenAPI docs result in openapi.valid=false
- Probe GET disabled by default; endpoints requiring it for full verification may show incomplete results

## How this service works

Buyer-first MCP procurement gateway that discovers, compares and routes live x402 APIs without making the buyer choose a provider.

## Output

Returns a structured JSON result containing: a numeric score (0-100) for the endpoint's x402 readiness, individual check results for OpenAPI validity, HTTP status, x-payment-info headers, and live GET probe (if requested), a safety summary confirming no funds were moved and no payment was signed, and a human-readable verdict such as 'metadata_ready'. Also includes timestamps and product/service attribution.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string",
   "format": "uri"
  },
  "probe_get": {
   "type": "boolean",
   "default": false
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {
   "url": "https://merchant.example/api",
   "score": 75,
   "checks": {
    "openapi": {
     "valid": true,
     "status": 200,
     "documents_402": true,
     "has_x_payment_info": true
    },
    "live_get": {
     "reason": "safe_default_metadata_only",
     "attempted": false
    },
    "metadata": {
     "valid": true,
     "status": 200
    }
   },
   "safety": {
    "funds_moved": false,
    "payment_signed": false,
    "post_request_sent": false,
    "private_network_blocked": true
   },
   "verdict": "metadata_ready",
   "generated_at": "2026-09-18T00:00:00.000Z"
  },
  "product": "kevaremesh_x402_endpoint_verification_cdp_x402_endpoint_verification_v2",
  "service": "KEVAREMESH",
  "tool_name": "kevaremesh_verify_x402",
  "limitations": [
   "No payment is signed or submitted"
  ],
  "generated_at": "2026-09-18T00:00:00.000Z"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/kevaremesh-x402-endpoint-verification-a8e5304e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from kevaremesh-web.vercel.app](https://www.zero.xyz/host/kevaremesh-web.vercel.app/llms.txt)