## Documentation Index

Fetch the complete documentation index at: [/llms.txt](https://docs.walletconnect.com/llms.txt)

Use this file to discover all available pages before exploring further.

### cURL

```bash
curl --request POST \
  --url https://api.pay.walletconnect.com/v1/gateway/payment/{id}/cancel \
  --header 'Api-Key: <api-key>'
```

```python
import requests

url = "https://api.pay.walletconnect.com/v1/gateway/payment/{id}/cancel"

headers = {"Api-Key": "<api-key>"}

response = requests.post(url, headers=headers)

print(response.text)
```

```javascript
const options = {method: 'POST', headers: {'Api-Key': '<api-key>'}};

fetch('https://api.pay.walletconnect.com/v1/gateway/payment/{id}/cancel', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));
```

```php
<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.pay.walletconnect.com/v1/gateway/payment/{id}/cancel",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_HTTPHEADER => [
    "Api-Key: <api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}
```

```go
package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

url := "https://api.pay.walletconnect.com/v1/gateway/payment/{id}/cancel"

req, _ := http.NewRequest("POST", url, nil)

req.Header.Add("Api-Key", "<api-key>")

res, _ := http.DefaultClient.Do(req)

defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

fmt.Println(string(body))
}
```

```java
HttpResponse<String> response = Unirest.post("https://api.pay.walletconnect.com/v1/gateway/payment/{id}/cancel")
  .header("Api-Key", "<api-key>")
  .asString();
```

```ruby
require 'uri'
require 'net/http'

url = URI("https://api.pay.walletconnect.com/v1/gateway/payment/{id}/cancel")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Api-Key"] = '<api-key>'

response = http.request(request)
puts response.read_body
```

### Responses

- **200**  
  Payment cancelled successfully
  ```json
  {
    "cancelledAt": "2025-01-14T10:30:00Z",
    "cancelledReason": "cancelled_by_user",
    "paymentId": "pay_c4a2ecc101KQFN7X7RZACHTYV7JX5C4QET",
    "status": "cancelled"
  }
  ```

- **400**  
  ```json
  {
    "message": "<string>"
  }
  ```

- **401**  
  ```json
  {
    "message": "<string>"
  }
  ```

- **404**  
  ```json
  {
    "message": "<string>"
  }
  ```

- **500**  
  ```json
  {
    "message": "<string>"
  }
  ```

### Authorizations

#### API Key
- **Api-Key**  
  - Type: string  
  - Required: yes

### Headers

| Name | Type | Required |
|------|------|----------|
| Api-Key | string | yes |
| App-Id | string | no  |
| Client-Id | string | no  |
| WCP-Version | string | no  |
| Sdk-Name | string | no  |
| Sdk-Version | string | no  |
| Sdk-Platform | string | no  |

### Path Parameters

| Name | Type | Required | Description |
|------|------|----------|-------------|
| id | string | yes | Payment ID (e.g., "pay_7fa2ecc101ARZ3NDEKTSV4RRFFQ69G5FAV") |