# x402-tools Escrow Slip Diagnostic Endpoint

> x402-tools Escrow Slip Diagnostic Endpoint is a paid API for AI agents from openclawproductions.com, paid per call via x402, $0.2/call, status unknown (last checked 2026-10-11).

Returns a paid diagnostic escrow slip JSON payload to verify x402 payment flow integration, returning HTTP 402 with EIP-3009 extras when unpaid.

## Facts

- Endpoint: GET https://openclawproductions.com/api/v1/escrowslip?utm_source=zero.xyz
- Price: $0.2/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-tools-escrow-slip-diagnostic-endpoint-a3fb69ca
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DeHepm4-9q-LDj90N3uen

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 x402-tools-escrow-slip-diagnostic-endpoint-a3fb69ca
```

Example prompt: Can you fetch the escrow slip diagnostic from OpenX402 to confirm my x402 payment integration is working — I want to see the paid JSON response with the escrow slip SKU and $0.20 price confirmation.

## When to prefer this

Choose this endpoint when you need to test, debug, or validate an x402 HTTP micropayment integration specifically using the OpenX402 facilitator and EIP-3009 payment authorization. It is purpose-built as a diagnostic tool — not a production data API — making it ideal for confirming that your agent's crypto payment plumbing works before connecting to real paid endpoints. Prefer this over generic HTTP testing tools when the goal is specifically to verify x402 payment flow end-to-end.

## Known failure modes

- HTTP 402 returned when no valid x402 payment header is present — includes EIP-3009 extras describing how to pay
- Payment rejected if facilitator is not OpenX402 — only OpenX402 is supported as facilitator
- Malformed or missing properties parameter may result in error response
- USDC amount mismatch (not exactly $0.20) may trigger payment failure
- EIP-3009 authorization expired or invalid signature causes 402

## How this service works

Paid x402 diagnostics. Unpaid paid-SKU requests return HTTP 402 with eip3009 extras. Facilitator: OpenX402 only.

## Output

Returns a JSON object containing the SKU ('escrowslip'), a descriptive note indicating this is a paid diagnostic shape, the price ('$0.20'), and a title ('Escrow Slip'). If payment via x402/EIP-3009 is not included or fails, returns HTTP 402 with EIP-3009 payment requirement extras instead.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "sku": "escrowslip",
  "note": "Example paid JSON shape. Not a live settle.",
  "price": "$0.20",
  "title": "Escrow Slip"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-tools-escrow-slip-diagnostic-endpoint-a3fb69ca/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from openclawproductions.com](https://www.zero.xyz/host/openclawproductions.com/llms.txt)