> 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/login.md).

# Login

Authenticates a user and returns access/refresh tokens for API authorization. Supports optional 2FA verification.

**Endpoint**

 `POST/v2/auth/login`

**Link**

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

### **Request**

#### **Headers**

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

#### **Request Body (JSON)**

| Field          | Type     | Description            | Required | Example              |
| -------------- | -------- | ---------------------- | -------- | -------------------- |
| **`login`**    | `string` | Email                  | Yes      | `"user@example.com"` |
| **`password`** | `string` | Password               | Yes      | `"SecurePass123!"`   |
| **`code`**     | `string` | 2FA code (if enabled). | No       | `"123456"`           |

Credentials are provided by our team when you start testing (test version, stage) and finish testing (production environment).&#x20;

**Example Request Body:**

json

```
{
  "login": "user@example.com",
  "password": "SecurePass123!",
  "code": "123456"
}
```

***

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

Returns authentication tokens and their expiration times.

#### **Response Fields**

| Field              | Type      | Description                                                         | Example                                  |
| ------------------ | --------- | ------------------------------------------------------------------- | ---------------------------------------- |
| **`accessToken`**  | `string`  | **JWT token** for API authorization. Valid for `accessTtl` seconds. | `"eyJhbGci...xyz"`                       |
| **`refreshToken`** | `string`  | **Long-lived token** to renew `accessToken` when expired.           | `"eyJhbGci...abc"`                       |
| **`UserId`**       | `string`  | Unique user identifier.                                             | `"5ff73da8-224e-44de-a235-2d7a76c3144c"` |
| **`accessTtl`**    | `integer` | **Access token lifetime** (seconds).                                | `3600` (1 hour)                          |
| **`refreshTtl`**   | `integer` | **Refresh token lifetime** (seconds).                               | `2592000` (30 days)                      |

**Example Response:**

```
{
  "accessToken": "eyJhbGci...xyz",
  "refreshToken": "eyJhbGci...abc",
  "guid": "usr_5f3d8e2a",
  "accessTtl": 3600,
  "refreshTtl": 2592000
}
```

### **Error Cases**

1. **Invalid Credentials**:

   ```
   { "error": "Invalid login or password" }
   ```
2. **Missing 2FA Code**:

   ```
   { "error": "2FA code required", "requires2fa": true }
   ```
3. **Expired/Invalid 2FA Code**:

   ```
   { "error": "Invalid or expired 2FA code" }
   ```
4. **Account Locked**:

   ```
   { "error": "Account locked after 5 failed attempts" }
   ```

***

### **Notes**

* **Token Usage**:
  * Include `accessToken` in the `Authorization: Bearer <token>` header for authenticated requests.
  * Use `refreshToken` to call `/v2/auth/refresh` when `accessToken` expires.
* **Security**:
  * Passwords are case-sensitive.
  * `refreshToken` should be stored securely (e.g., HTTP-only cookie).
* **2FA**:
  * The `code` field is optional unless 2FA is enabled for the account.
  * If 2FA is required but not provided, the response will include `"requires2fa": true`.

### Examples

**Real request**&#x20;

```postman_json
{
  "login": "test@delos.financial",
  "password": "testpassword",
  "code": "<string>"
}
```

**Real response**&#x20;

```json
{
  "accessToken": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOjE2NCwiZXhwIjoxNzYzNTQ5NTU1LCJrZXkiOiI1Y2ZiOGZjN2RmYjk4ZjVkYmIyZTgwNTVkZWFhN2U2Zjk4MzEyYmE3Iiwib3RwX3ZlcmlmaWVkIjpmYWxzZX0.OHY4Gtx1S9W-eOjcLUHqPd5gDB4aqVDec7q9to0L9-0",
  "refreshToken": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOjE2NCwiZXhwIjoxNzYzNTUwMTU1LCJrZXkiOiI1Y2ZiOGZjN2RmYjk4ZjVkYmIyZTgwNTVkZWFhN2U2Zjk4MzEyYmE3Iiwib3RwX3ZlcmlmaWVkIjpmYWxzZX0.7n7GBsWhqaLkBU3-exTTau2E1RmGuoUBB7rz-vXtm90",
  "userId": "5ff73da8-224e-44de-a235-2d7a76c3144c",
  "accessTtl": 299,
  "refreshTtl": 899
}
```


---

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