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POST
/
token
curl -X POST "http://localhost:8080/token?grant_type=password" \
  -H "Content-Type: application/json" \
  -d '{
    "email": "user@example.com",
    "password": "securepassword123"
  }'

{
  "access_token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJhdWQiOiJhdXRoZW50aWNhdGVkIiwiZXhwIjoxNjQwOTk1MjAwLCJpYXQiOjE2NDA5MDg4MDAsImlzcyI6Imh0dHBzOi8veW91ci1wcm9qZWN0LnN1cGFiYXNlLmNvL2F1dGgvdjEiLCJzdWIiOiIxMjNlNDU2Ny1lODliLTEyZDMtYTQ1Ni00MjY2MTQxNzQwMDAiLCJlbWFpbCI6InVzZXJAZXhhbXBsZS5jb20iLCJyb2xlIjoiYXV0aGVudGljYXRlZCJ9...",
  "token_type": "bearer",
  "expires_in": 3600,
  "expires_at": 1640995200,
  "refresh_token": "refresh_token_string_here",
  "user": {
    "id": "123e4567-e89b-12d3-a456-426614174000",
    "aud": "authenticated",
    "role": "authenticated",
    "email": "user@example.com",
    "phone": null,
    "email_confirmed_at": "2023-01-01T00:00:00Z",
    "phone_confirmed_at": null,
    "last_sign_in_at": "2023-01-01T12:00:00Z",
    "app_metadata": {
      "provider": "email",
      "providers": ["email"]
    },
    "user_metadata": {
      "first_name": "John",
      "last_name": "Doe"
    },
    "created_at": "2023-01-01T00:00:00Z",
    "updated_at": "2023-01-01T12:00:00Z"
  }
}
OAuth2 token endpoint supporting password grant (login) and refresh token grant. This endpoint authenticates users and returns access tokens for API access.

​
Password Grant (Login)

Authenticate a user with email/phone and password to receive access and refresh tokens. 
curl -X POST "http://localhost:8080/token?grant_type=password" \
  -H "Content-Type: application/json" \
  -d '{
    "email": "user@example.com",
    "password": "securepassword123"
  }'

​
Query Parameters

​
grant_type
string
required
The OAuth2 grant type. Use password for login or refresh_token for token refresh.

​
Request Body (Password Grant)

​
email
string
User’s email address. Either email or phone is required.
​
phone
string
User’s phone number in international format. Either email or phone is required.
​
password
string
required
User’s password.

​
Refresh Token Grant

Use a refresh token to obtain new access tokens without re-authentication. 
curl -X POST "http://localhost:8080/token?grant_type=refresh_token" \
  -H "Content-Type: application/json" \
  -d '{
    "refresh_token": "your_refresh_token_here"
  }'

​
Request Body (Refresh Token Grant)

​
refresh_token
string
required
The refresh token obtained from a previous authentication.

​
Response

​
access_token
string
JWT access token for authenticating API requests
​
token_type
string
Token type, always “bearer”
​
expires_in
integer
Token expiration time in seconds (typically 3600 for 1 hour)
​
expires_at
integer
Token expiration timestamp (Unix timestamp)
​
refresh_token
string
Refresh token for obtaining new access tokens
​
user
object
User information object
{
  "access_token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJhdWQiOiJhdXRoZW50aWNhdGVkIiwiZXhwIjoxNjQwOTk1MjAwLCJpYXQiOjE2NDA5MDg4MDAsImlzcyI6Imh0dHBzOi8veW91ci1wcm9qZWN0LnN1cGFiYXNlLmNvL2F1dGgvdjEiLCJzdWIiOiIxMjNlNDU2Ny1lODliLTEyZDMtYTQ1Ni00MjY2MTQxNzQwMDAiLCJlbWFpbCI6InVzZXJAZXhhbXBsZS5jb20iLCJyb2xlIjoiYXV0aGVudGljYXRlZCJ9...",
  "token_type": "bearer",
  "expires_in": 3600,
  "expires_at": 1640995200,
  "refresh_token": "refresh_token_string_here",
  "user": {
    "id": "123e4567-e89b-12d3-a456-426614174000",
    "aud": "authenticated",
    "role": "authenticated",
    "email": "user@example.com",
    "phone": null,
    "email_confirmed_at": "2023-01-01T00:00:00Z",
    "phone_confirmed_at": null,
    "last_sign_in_at": "2023-01-01T12:00:00Z",
    "app_metadata": {
      "provider": "email",
      "providers": ["email"]
    },
    "user_metadata": {
      "first_name": "John",
      "last_name": "Doe"
    },
    "created_at": "2023-01-01T00:00:00Z",
    "updated_at": "2023-01-01T12:00:00Z"
  }
}

​
Error Responses

{
  "code": 400,
  "msg": "Invalid credentials",
  "details": "Email or password is incorrect"
}

​
Using Access Tokens

Include the access token in the Authorization header for authenticated requests: 
Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...
Example authenticated request: 
curl -X GET "http://localhost:8080/user" \
  -H "Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9..." \
  -H "Content-Type: application/json"

​
Token Refresh Strategy

Implement automatic token refresh in your application: 
class AuthClient {
  constructor() {
    this.accessToken = null;
    this.refreshToken = null;
  }

  async refreshAccessToken() {
    const response = await fetch('/token?grant_type=refresh_token', {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({ refresh_token: this.refreshToken })
    });

    const data = await response.json();
    this.accessToken = data.access_token;
    this.refreshToken = data.refresh_token;
  }

  async makeRequest(url, options = {}) {
    // Add auth header
    const headers = {
      'Authorization': `Bearer ${this.accessToken}`,
      ...options.headers
    };

    let response = await fetch(url, { ...options, headers });

    // If token expired, refresh and retry
    if (response.status === 401) {
      await this.refreshAccessToken();
      headers['Authorization'] = `Bearer ${this.accessToken}`;
      response = await fetch(url, { ...options, headers });
    }

    return response;
  }
}

​
Phone Number Login

To login with a phone number instead of email: 
{
  "phone": "+1234567890",
  "password": "securepassword123"
}

​
Rate Limiting

This endpoint is rate limited to prevent brute force attacks:
  • Password Grant: 5 attempts per minute per IP address
  • Refresh Token Grant: 10 requests per minute per user

​
Security Features

  • Secure Password Hashing: Passwords are verified using bcrypt
  • Token Rotation: Refresh tokens are rotated on each use
  • Rate Limiting: Protection against brute force attacks
  • Audit Logging: All authentication attempts are logged

​
Next Steps

After successful authentication:
  1. Store tokens securely - Save access and refresh tokens
  2. Make authenticated requests - Use the access token in API calls
  3. Handle token expiration - Implement automatic refresh logic
  4. Implement logout - Use the logout endpoint