# Slidingbox.ai x402 Resource Verifier

> Slidingbox.ai x402 Resource Verifier is a paid API for AI agents from slidingbox.ai, paid per call via x402, $0.01/call, status down (last checked 2026-10-02).

Checks whether a given HTTP URL is a live, payable x402 resource and returns its payment details and catalog metadata

## Facts

- Endpoint: GET https://slidingbox.ai/v1/verify?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: down
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/slidingbox-ai-x402-resource-verifier-962fd782
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Ujvbdt4qrbuXCp576BVhq

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 slidingbox-ai-x402-resource-verifier-962fd782
```

Example prompt: Can you check if https://api.onesource.io/api/chain/block-number is a live x402-payable endpoint and tell me its current price and the wallet address I'd need to pay?

## When to prefer this

Use this endpoint when you need to confirm that a specific URL is correctly configured as an x402 payable resource before attempting payment, when auditing whether catalog metadata is consistent with live endpoint behavior, or when discovering whether a new API endpoint supports the x402 payment protocol. Prefer this over manual inspection or generic HTTP probing tools when you need structured, machine-readable payment metadata in a single call.

## Known failure modes

- Resource URL is not a valid absolute http/https URI — returns validation error
- Target URL does not return a 402 status — payable field is false, challenge_shape may be null
- Network timeout or unreachable host — check may fail with connection error
- URL is a template/pattern URL rather than a concrete resource — flagged via reason_codes template_url
- Price or pay-to address mismatch between live response and catalog — flagged via price_matches_catalog or pay_to_matches_catalog false

## How this service works

Slidingbox.ai is a studio that builds and operates micro-SaaS APIs for machine-to-machine and agent-to-agent transactions, priced per call.

## Output

Returns a JSON object indicating whether the URL is payable via x402, the live payment address and price in USD, the catalog record (method, pay-to, price, last seen timestamp), HTTP status code, challenge shape, reason codes, whether price and pay-to match the catalog, and the timestamp of the check.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "live": {
   "pay_to": "0xfb745c37586da6a02f96c19ef0124a38a36f1606",
   "price_usd": 0.02
  },
  "catalog": {
   "method": "GET",
   "pay_to": "0xfb745c37586da6a02f96c19ef0124a38a36f1606",
   "seen_at": "2026-09-08T06:15:00.000Z",
   "price_usd": 0.02
  },
  "payable": true,
  "resource": "https://api.onesource.io/api/chain/block-number",
  "checked_at": "2026-09-08T12:00:00.000Z",
  "http_status": 402,
  "reason_codes": [
   "template_url"
  ],
  "challenge_shape": "PAYABLE",
  "last_changed_at": null,
  "price_matches_catalog": true,
  "pay_to_matches_catalog": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/slidingbox-ai-x402-resource-verifier-962fd782/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from slidingbox.ai](https://www.zero.xyz/host/slidingbox.ai/llms.txt)