> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.shimi.cash/api-reference/shimi-api/authentication/refresh-access-token/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.shimi.cash/_mcp/server.

# Refresh Access Token

POST https://shimi-waas-api-9493532b9281.herokuapp.com/api/v1/auth/refresh-access-token/
Content-Type: application/json

Exchange a valid refresh token for a new access token, without re-sending your API key. Call this whenever a request fails with `403 Invalid or expired access token`.

**Errors:** `400` refresh token missing · `403` invalid company or invalid/expired refresh token.

**Body (JSON)**
| Field | Type | Required | Notes |
|---|---|---|---|
| `refreshToken` | string (JWT) | yes | The most recent `refreshToken` from Generate Access Token. |

**Behaviour notes**
- Returns only a new `accessToken`; the refresh token is not rotated here.
- No `Authorization` header is needed for this call.
- The KYB gate is checked live (no cache), so the same `403 KYB_REQUIRED` / `ACCOUNT_DEACTIVATED` bodies as Generate Access Token can come back.
- A well-formed but superseded refresh token (one replaced by a later Generate Access Token call) returns `401 Unauthorized: Invalid API key`; the message wrongly says "API key".
- A malformed or expired refresh token returns `403 Invalid or expired refresh token`.

Reference: https://docs.shimi.cash/api-reference/shimi-api/authentication/refresh-access-token

## Request

### Body (application/json)

This endpoint expects an object.

- `refreshToken` (string, optional)

## Response

### 200

OK

- `accessToken` (string, optional)

## Errors

### 400 Bad Request Error

Bad Request

- `message` (string, optional)

### 401 Unauthorized Error

Unauthorized

- `message` (string, optional)

### 403 Forbidden Error

Invalid or expired refresh token / Invalid company

- `message` (string, optional)

## Examples

### 200 Success

**Response**

```json
{
  "accessToken": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJyZWZlcmVuY2UiOiJjbWcxYTdyMmswMDAwYWIxMmNkMzRlZjU2IiwiaWF0IjoxNzkxMTE1MjAwLCJleHAiOjE3OTExMTg4MDB9.4fT0nR8qWz3m1Xk7pLcV2bH9yJdE6sGuA5oYtKiN0Qw"
}
```

**SDK Code**

```python 200 Success
import requests

url = "https://shimi-waas-api-9493532b9281.herokuapp.com/api/v1/auth/refresh-access-token/"

response = requests.post(url)

print(response.json())
```

```javascript 200 Success
const url = 'https://shimi-waas-api-9493532b9281.herokuapp.com/api/v1/auth/refresh-access-token/';
const options = {method: 'POST'};

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

```go 200 Success
package main

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

func main() {

	url := "https://shimi-waas-api-9493532b9281.herokuapp.com/api/v1/auth/refresh-access-token/"

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

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

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

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

}
```

```ruby 200 Success
require 'uri'
require 'net/http'

url = URI("https://shimi-waas-api-9493532b9281.herokuapp.com/api/v1/auth/refresh-access-token/")

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

request = Net::HTTP::Post.new(url)

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

```java 200 Success
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.post("https://shimi-waas-api-9493532b9281.herokuapp.com/api/v1/auth/refresh-access-token/")
  .asString();
```

```php 200 Success
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://shimi-waas-api-9493532b9281.herokuapp.com/api/v1/auth/refresh-access-token/');

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

```csharp 200 Success
using RestSharp;

var client = new RestClient("https://shimi-waas-api-9493532b9281.herokuapp.com/api/v1/auth/refresh-access-token/");
var request = new RestRequest(Method.POST);
IRestResponse response = client.Execute(request);
```

```swift 200 Success
import Foundation

let request = NSMutableURLRequest(url: NSURL(string: "https://shimi-waas-api-9493532b9281.herokuapp.com/api/v1/auth/refresh-access-token/")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "POST"

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()
```

### Authentication_refreshAccessToken_example

**Request**

```json
{
  "refreshToken": "{{refresh_token}}"
}
```

**Response**

```json
{
  "accessToken": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJyZWZlcmVuY2UiOiJjbWcxYTdyMmswMDAwYWIxMmNkMzRlZjU2IiwiaWF0IjoxNzkxMTE1MjAwLCJleHAiOjE3OTExMTg4MDB9.4fT0nR8qWz3m1Xk7pLcV2bH9yJdE6sGuA5oYtKiN0Qw"
}
```

**SDK Code**

```python Authentication_refreshAccessToken_example
import requests

url = "https://shimi-waas-api-9493532b9281.herokuapp.com/api/v1/auth/refresh-access-token/"

payload = { "refreshToken": "{{refresh_token}}" }
headers = {"Content-Type": "application/json"}

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

print(response.json())
```

```javascript Authentication_refreshAccessToken_example
const url = 'https://shimi-waas-api-9493532b9281.herokuapp.com/api/v1/auth/refresh-access-token/';
const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: '{"refreshToken":"{{refresh_token}}"}'
};

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

```go Authentication_refreshAccessToken_example
package main

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

func main() {

	url := "https://shimi-waas-api-9493532b9281.herokuapp.com/api/v1/auth/refresh-access-token/"

	payload := strings.NewReader("{\n  \"refreshToken\": \"{{refresh_token}}\"\n}")

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

	req.Header.Add("Content-Type", "application/json")

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

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

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

}
```

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

url = URI("https://shimi-waas-api-9493532b9281.herokuapp.com/api/v1/auth/refresh-access-token/")

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

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"refreshToken\": \"{{refresh_token}}\"\n}"

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

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

HttpResponse<String> response = Unirest.post("https://shimi-waas-api-9493532b9281.herokuapp.com/api/v1/auth/refresh-access-token/")
  .header("Content-Type", "application/json")
  .body("{\n  \"refreshToken\": \"{{refresh_token}}\"\n}")
  .asString();
```

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

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://shimi-waas-api-9493532b9281.herokuapp.com/api/v1/auth/refresh-access-token/', [
  'body' => '{
  "refreshToken": "{{refresh_token}}"
}',
  'headers' => [
    'Content-Type' => 'application/json',
  ],
]);

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

```csharp Authentication_refreshAccessToken_example
using RestSharp;

var client = new RestClient("https://shimi-waas-api-9493532b9281.herokuapp.com/api/v1/auth/refresh-access-token/");
var request = new RestRequest(Method.POST);
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{\n  \"refreshToken\": \"{{refresh_token}}\"\n}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift Authentication_refreshAccessToken_example
import Foundation

let headers = ["Content-Type": "application/json"]
let parameters = ["refreshToken": "{{refresh_token}}"] as [String : Any]

let postData = JSONSerialization.data(withJSONObject: parameters, options: [])

let request = NSMutableURLRequest(url: NSURL(string: "https://shimi-waas-api-9493532b9281.herokuapp.com/api/v1/auth/refresh-access-token/")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "POST"
request.allHTTPHeaderFields = headers
request.httpBody = postData as Data

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()
```