> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.tabs.com/api-reference/contracts/contracts-billing-microservice-controller-get-seat-amendments-for-billing-term/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.tabs.com/_mcp/server.

# List billing term seat amendments

GET https://integrators.prod.api.tabsplatform.com/v3/contracts/{id}/billing-terms/{billingTermId}/seat-amendments

Reference: https://docs.tabs.com/api-reference/contracts/contracts-billing-microservice-controller-get-seat-amendments-for-billing-term

## Authentication

- `Authorization` header (required) — API Key authentication via header

## Request

### Path parameters

- `id` (string, required) — Contract id
- `billingTermId` (string, required) — Billing term id

### Query parameters

- `seatAmendmentId` (string, optional) — Search for a specific seat amendment by seat amendment id (optional)
- `page` (double, optional)
- `limit` (double, optional)

## Response

### 200

Get all seat amendments for a billing term

- `payload` (V3ContractsIdBillingTermsBillingTermIdSeatAmendmentsGetResponsesContentApplicationJsonSchemaPayload, required) — Response payload, will be empty when success is false
- `success` (boolean, required) — Boolean with true=success, false=failure
- `message` (string, required) — Plain-text description of the result
- `error` (IntegratorsApiError, optional) — json element with any error messages or warnings

## Errors

### 400 Bad Request Error

Invalid request body

- `any`

### 404 Not Found Error

Billing term not found for contract

- `any`

## Types

### V3ContractsIdBillingTermsBillingTermIdSeatAmendmentsGetResponsesContentApplicationJsonSchemaPayload

Response payload, will be empty when success is false

### IntegratorsApiError

- `code` (double, required) — API response code
- `message` (string, required) — API response message
- `details` (IntegratorsApiErrorDetails, optional) — Additional details about the error

### IntegratorsApiErrorDetails

Additional details about the error

## Examples

**Response**

```json
{
  "payload": {
    "data": [
      {
        "id": "123e4567-e89b-12d3-a456-426614174000",
        "obligationId": "456e7890-e89b-12d3-a456-426614174001",
        "effectiveDate": "2026-01-01",
        "newQuantity": 150,
        "prorationPolicy": "DAY",
        "trueUpTiming": "IMMEDIATE",
        "lastUpdatedAt": "2025-09-19T00:00:00.000Z"
      }
    ],
    "limit": 1.1,
    "totalItems": 1.1,
    "currentPage": 1.1
  },
  "success": true,
  "message": "string",
  "error": {
    "code": 1.1,
    "message": "string",
    "details": {}
  }
}
```

**SDK Code**

```python
import requests

url = "https://integrators.prod.api.tabsplatform.com/v3/contracts/123e4567-e89b-12d3-a456-426614174000/billing-terms/123e4567-e89b-12d3-a456-426614174000/seat-amendments"

headers = {"Authorization": "<apiKey>"}

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

print(response.json())
```

```javascript
const url = 'https://integrators.prod.api.tabsplatform.com/v3/contracts/123e4567-e89b-12d3-a456-426614174000/billing-terms/123e4567-e89b-12d3-a456-426614174000/seat-amendments';
const options = {method: 'GET', headers: {Authorization: '<apiKey>'}};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go
package main

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

func main() {

	url := "https://integrators.prod.api.tabsplatform.com/v3/contracts/123e4567-e89b-12d3-a456-426614174000/billing-terms/123e4567-e89b-12d3-a456-426614174000/seat-amendments"

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

	req.Header.Add("Authorization", "<apiKey>")

	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://integrators.prod.api.tabsplatform.com/v3/contracts/123e4567-e89b-12d3-a456-426614174000/billing-terms/123e4567-e89b-12d3-a456-426614174000/seat-amendments")

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

request = Net::HTTP::Get.new(url)
request["Authorization"] = '<apiKey>'

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.get("https://integrators.prod.api.tabsplatform.com/v3/contracts/123e4567-e89b-12d3-a456-426614174000/billing-terms/123e4567-e89b-12d3-a456-426614174000/seat-amendments")
  .header("Authorization", "<apiKey>")
  .asString();
```

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

$client = new \GuzzleHttp\Client();

$response = $client->request('GET', 'https://integrators.prod.api.tabsplatform.com/v3/contracts/123e4567-e89b-12d3-a456-426614174000/billing-terms/123e4567-e89b-12d3-a456-426614174000/seat-amendments', [
  'headers' => [
    'Authorization' => '<apiKey>',
  ],
]);

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

```csharp
using RestSharp;

var client = new RestClient("https://integrators.prod.api.tabsplatform.com/v3/contracts/123e4567-e89b-12d3-a456-426614174000/billing-terms/123e4567-e89b-12d3-a456-426614174000/seat-amendments");
var request = new RestRequest(Method.GET);
request.AddHeader("Authorization", "<apiKey>");
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = ["Authorization": "<apiKey>"]

let request = NSMutableURLRequest(url: NSURL(string: "https://integrators.prod.api.tabsplatform.com/v3/contracts/123e4567-e89b-12d3-a456-426614174000/billing-terms/123e4567-e89b-12d3-a456-426614174000/seat-amendments")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "GET"
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()
```