> For the complete documentation index, see [llms.txt](https://docs.delos.financial/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.delos.financial/authentication/refresh-access-token.md).

# Refresh Access Token

Generates a new access token using a valid refresh token, extending the user's session without requiring reauthentication.

**Endpoint**

`GET/v2/auth/refresh/{token}`

**Link**

{% embed url="<https://stagep.tst-apidmndelss.com/openapi/v2.html#/operations/Auth_RefreshToken>" %}

### **Request**

#### **Path Parameters**

| Parameter   | Type     | Description                                    | Required | Example       |
| ----------- | -------- | ---------------------------------------------- | -------- | ------------- |
| **`token`** | `string` | **Valid refresh token** (from login/recovery). | Yes      | `"xyz789abc"` |

#### **Headers**

| Key      | Value              | Required |
| -------- | ------------------ | -------- |
| `Accept` | `application/json` | Yes      |

***

### **Response (200 OK)**

Returns new authentication tokens with updated expiration times.

#### **Response Fields**

| Field              | Type      | Description                           | Example                       |
| ------------------ | --------- | ------------------------------------- | ----------------------------- |
| **`accessToken`**  | `string`  | **New JWT** for API authorization.    | `"eyJhbGci...xyz"`            |
| **`refreshToken`** | `string`  | **New refresh token**.                | `"eyJhbGci...abc"`            |
| **`guid`**         | `string`  | User identifier.                      | `"D69Ijtr-sTPF-2FhmobKMEExA"` |
| **`accessTtl`**    | `integer` | **Access token lifetime** (seconds).  | `3600` (1 hour)               |
| **`refreshTtl`**   | `integer` | **Refresh token lifetime** (seconds). | `2592000` (30 days)           |

**Example Response:**

json

```
{
  "accessToken": "eyJhbGci...xyz",
  "refreshToken": "eyJhbGci...abc",
  "guid": "D69Ijtr-sTPF-2FhmobKMEExA",
  "accessTtl": 3600,
  "refreshTtl": 2592000
}
```

### **Error Responses**

1. **Invalid/Expired Token**:

   json

   ```
   {
     "error": "Invalid or expired refresh token"
   }
   ```
2. **Revoked Token**:

   json

   ```
   {
     "error": "Token revoked. Please log in again"
   }
   ```

***

### **Notes**

* **When to Use**:
  * When the `accessToken` expires (check `accessTtl`).
  * After password changes or security events.
* **Security**:
  * Refresh tokens are **single-use** (a new one is issued each refresh).
  * Old refresh tokens are invalidated immediately.
* **Best Practices**:
  * Store refresh tokens securely (e.g., HTTP-only cookies).
  * Rotate tokens frequently.

### Examples

**Real request**&#x20;

```postman_json
token*
:
eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOjE2NCwiZXhwIjoxNzYxMTMwODE1LCJrZXkiOiI1Y2ZiOGZjN2RmYjk4ZjVkYmIyZTgwNTVkZWFhN2U2Zjk4MzEyYmE3Iiwib3RwX3ZlcmlmaWVkIjpmYWxzZX0.CGqmWYJt6aL_Uz52qiFpmySsIGgJ4LEQ1eLmbsaBJjY

```

**Real response**&#x20;

200 OK

```postman_json
{
  "accessToken": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOjE2NCwiZXhwIjoxNzYxMTMwMjQwLCJrZXkiOiI1Y2ZiOGZjN2RmYjk4ZjVkYmIyZTgwNTVkZWFhN2U2Zjk4MzEyYmE3Iiwib3RwX3ZlcmlmaWVkIjpmYWxzZX0.fOBE0z6FIYH42Ks3qRklHA_wxK7cPC0RojmCDGGcDRA",
  "refreshToken": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOjE2NCwiZXhwIjoxNzYxMTMwODQwLCJrZXkiOiI1Y2ZiOGZjN2RmYjk4ZjVkYmIyZTgwNTVkZWFhN2U2Zjk4MzEyYmE3Iiwib3RwX3ZlcmlmaWVkIjpmYWxzZX0.qvNgNcWCmEtNqJDPx2M8Xp2bpuTRutN9zP3lvh9wcpw",
  "userId": "5ff73da8-224e-44de-a235-2d7a76c3144c",
  "accessTtl": 299,
  "refreshTtl": 899
}
```


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.delos.financial/authentication/refresh-access-token.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.