> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.trygrant.com/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.trygrant.com/_mcp/server.

# Create a customer portal link

POST https://api.trygrant.com/v1/customers/{id}/portal-link

Generates a new customer portal link. The link allows the customer to manage their subscriptions and payment methods.

Reference: https://docs.trygrant.com/api-reference/grant-events-api/customers/create-portal-link

## Authentication

- `Authorization` header (bearer token, required) — API key obtained from the Grant dashboard

## Servers

- `https://api.trygrant.com` (Production, default)
- `http://localhost:8787` (Local development)

## Request

### Path parameters

- `id` (string, required)

## Response

### 200

Portal link created

- `success` (boolean, required)
- `url` (string, required) — Customer portal URL
- `expires_at` (string, required) — ISO 8601 expiration timestamp for the token
- `request_id` (string, required)

## Examples

**Response**

```json
{
  "success": true,
  "url": "https://www.trygrant.com/customer-portal/cm5x9z8nv0000h85r7l9p2k1m/abc123token",
  "expires_at": "2024-03-01T10:30:00.000Z",
  "request_id": "req_abc123"
}
```

**SDK Code**

```typescript
import { AfternoonClient } from "grant-sdk";

async function main() {
    const client = new AfternoonClient({
        token: "YOUR_TOKEN_HERE",
    });
    await client.customers.createPortalLink("cm5x9z8nv0000h85r7l9p2k1m");
}
main();

```

```python
import requests

url = "https://api.trygrant.com/v1/customers/cm5x9z8nv0000h85r7l9p2k1m/portal-link"

headers = {"Authorization": "Bearer <token>"}

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

print(response.json())
```

```go
package main

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

func main() {

	url := "https://api.trygrant.com/v1/customers/cm5x9z8nv0000h85r7l9p2k1m/portal-link"

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

	req.Header.Add("Authorization", "Bearer <token>")

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

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

	fmt.Println(res)
	fmt.Println(string(body))

}
```

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

url = URI("https://api.trygrant.com/v1/customers/cm5x9z8nv0000h85r7l9p2k1m/portal-link")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'

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

```java
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.post("https://api.trygrant.com/v1/customers/cm5x9z8nv0000h85r7l9p2k1m/portal-link")
  .header("Authorization", "Bearer <token>")
  .asString();
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://api.trygrant.com/v1/customers/cm5x9z8nv0000h85r7l9p2k1m/portal-link', [
  'headers' => [
    'Authorization' => 'Bearer <token>',
  ],
]);

echo $response->getBody();
```

```csharp
using RestSharp;

var client = new RestClient("https://api.trygrant.com/v1/customers/cm5x9z8nv0000h85r7l9p2k1m/portal-link");
var request = new RestRequest(Method.POST);
request.AddHeader("Authorization", "Bearer <token>");
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = ["Authorization": "Bearer <token>"]

let request = NSMutableURLRequest(url: NSURL(string: "https://api.trygrant.com/v1/customers/cm5x9z8nv0000h85r7l9p2k1m/portal-link")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "POST"
request.allHTTPHeaderFields = headers

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```