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# List a customer's routable models

GET https://api-gateway.merge.dev/v1/customers/{customer_id}/models

The models this customer can actually route to: the active catalog filtered by the customer's effective controls (its own vendor, region and ZDR overrides over your organization's), its key-usage mode (under `BYOK_ONLY` / `CUSTOMER_ONLY` a vendor needs a usable provider key), and your organization's vendor access. Render a per-customer model picker from this instead of re-deriving the rules. A customer-scoped API key may read its own list.

Reference: https://docs.merge.dev/merge-gateway/embedded-routing/customers/list-customer-models

## Authentication

- `Authorization` header (bearer token, required) — Your production key sent as a bearer token.

## Request

### Path parameters

- `customer_id` (string, required)

## Response

### 200

Successful Response

- `scope` (string, optional)
- `scope_id` (string, optional)
- `restrictions_active` (boolean, optional) — False when the effective controls restrict nothing; `models` is then the whole active catalog.
- `models` (list of ScopeRoutableModel, optional) — Models the customer can route to, sorted by id.
- `gated_model_ids` (list of string, optional) — Models the controls allow but whose vendor your organization has not been granted access to. Routing refuses them today; access can be requested.
- `key_usage_mode` (enum, optional, nullable) — The key-usage mode the data plane enforces for this customer: its own, else your organization's default for customers, else null (the organization's own BYOK preferences apply).
  - Allowed values: `use_any`, `prefer_byok`, `byok_only`, `customer_only`

## Types

### ScopeRoutableModel

- `model` (string, optional) — Canonical model id, `provider/model`
- `provider` (string, optional) — The model's author (provider slug)
- `vendors` (list of string, optional) — Execution hosts that can serve this model for the scope after its vendor, region and ZDR controls and its key-usage mode. Sorted.

## Examples

**Response**

```json
{
  "scope": "customer",
  "scope_id": "string",
  "restrictions_active": true,
  "models": [
    {
      "model": "openai/gpt-5.6-sol",
      "provider": "openai",
      "vendors": [
        "bedrock",
        "openai"
      ]
    }
  ],
  "gated_model_ids": [],
  "key_usage_mode": "byok_only"
}
```

**SDK Code**

```python
import requests

url = "https://api-gateway.merge.dev/v1/customers/customer_id/models"

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

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

print(response.json())
```

```javascript
const url = 'https://api-gateway.merge.dev/v1/customers/customer_id/models';
const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};

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://api-gateway.merge.dev/v1/customers/customer_id/models"

	req, _ := http.NewRequest("GET", 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-gateway.merge.dev/v1/customers/customer_id/models")

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

request = Net::HTTP::Get.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.get("https://api-gateway.merge.dev/v1/customers/customer_id/models")
  .header("Authorization", "Bearer <token>")
  .asString();
```

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

$client = new \GuzzleHttp\Client();

$response = $client->request('GET', 'https://api-gateway.merge.dev/v1/customers/customer_id/models', [
  'headers' => [
    'Authorization' => 'Bearer <token>',
  ],
]);

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

```csharp
using RestSharp;

var client = new RestClient("https://api-gateway.merge.dev/v1/customers/customer_id/models");
var request = new RestRequest(Method.GET);
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-gateway.merge.dev/v1/customers/customer_id/models")! 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()
```