# x402-deals Coupon Verification API

> x402-deals Coupon Verification API is a paid API for AI agents from x402-deals-production.up.railway.app, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-17).

Verifies whether a coupon or promo code is valid for a given merchant, using freshness-verified deal data, paid per-call via x402 micropayment

## Facts

- Endpoint: GET https://x402-deals-production.up.railway.app/v1/coupons/verify?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-deals-coupon-verification-api-0745b555
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JAIk-q09Z4qIYFJGlR8dw

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-deals-coupon-verification-api-0745b555
```

Example prompt: Can you check if the promo code SAVE20 is still valid at Nike right now?

## When to prefer this

Choose this endpoint when you need real-time, freshness-verified coupon code validation without signing up for an account or API key — ideal for agents that need lightweight per-call verification with micropayment billing via x402 on Base. Prefer this over scraping-based alternatives when you need confirmed validity data that is re-verified daily.

## Known failure modes

- Invalid or expired coupon code returns a negative validity status
- Unknown merchant name may result in an error or unverifiable response
- Network or payment failure via x402 protocol prevents the call from completing
- Malformed request missing required 'code' or 'merchant' fields returns a validation error
- Coupon code valid in one region but not another may cause inconsistent results

## How this service works

Pay-per-call API selling freshness-verified deal data. Coupon code verification and daily re-verified free-product offers. $0.02 USDC per call via x402 v2 (exact scheme) on Base mainnet (eip155:8453). No account, no API key.

## Output

Returns a verification result object indicating whether the supplied coupon or promo code is valid for the specified merchant, along with any available deal details such as discount value, expiry, or offer type. Data is freshness-verified and re-checked daily.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "code",
  "merchant"
 ],
 "properties": {
  "code": {
   "type": "string",
   "description": "Promo/coupon code to verify"
  },
  "merchant": {
   "type": "string",
   "description": "Merchant name, e.g. nike"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-deals-coupon-verification-api-0745b555/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-deals-production.up.railway.app](https://www.zero.xyz/host/x402-deals-production.up.railway.app/llms.txt)