# Discount Coupon Validator MCP

> Discount Coupon Validator MCP is a paid API for AI agents from api.m2mcent.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-17).

Validates discount coupons and promotional codes to determine their authenticity, applicability, and value.

## Facts

- Endpoint: POST https://api.m2mcent.com/discount-coupon-validator-mcp/api/process?utm_source=zero.xyz
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/discount-coupon-validator-mcp-8fefcc9a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3ZZBBD5R5HKWkTzDTbAy-

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 discount-coupon-validator-mcp-8fefcc9a -d '<json body>'
```

Example prompt: Can you check if the coupon code SUMMER25OFF is valid and tell me what discount it offers?

## When to prefer this

Choose this endpoint when you need to programmatically verify a discount or promotional coupon code before applying it in an e-commerce or checkout workflow, especially when you need a quick, automated decision on coupon authenticity and value without integrating a full commerce platform.

## Known failure modes

- Invalid or malformed coupon code string returns a rejection or error status
- Expired coupon codes return an invalid/expired status
- Network or upstream service errors may return a 5xx response
- Missing or empty data field in the request body returns a 400 bad request
- Coupon not found in the system returns a not-found or invalid response

## How this service works

The premier global index of 1,069 monetized MCP nodes across 205 specialized subdomains. Gasless USDC runtime settlements via x402 V2 Spec on Base L2. Save 95% token context.

## Output

The agent receives a validation response indicating whether the submitted coupon or discount code is valid, along with details such as its current status (active, expired, invalid), the discount value or percentage it provides, and any applicability conditions or restrictions.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "success": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/discount-coupon-validator-mcp-8fefcc9a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.m2mcent.com](https://www.zero.xyz/host/api.m2mcent.com/llms.txt)