createAccessToken Method

Overview

The createAccessToken method generates a short-lived authentication token for accessing payment processor APIs. Use this for temporary, secure access without exposing long-lived credentials.

Business Use Case: Your frontend needs to initialize a payment widget. Generate a temporary token with limited scope and short expiry for client-side use.

Purpose

Scenario	Benefit
Frontend SDKs	Secure client-side initialization
Delegated access	Scoped tokens for third parties
Session-based auth	Time-limited access

Request Fields

Field	Type	Required	Description
scope	string	No	Token scope (e.g., "payment:write")
expiresIn	number	No	Token lifetime in seconds (default: 3600)

Response Fields

Field	Type	Description
accessToken	string	The token string to use in API calls
tokenType	string	Bearer
expiresIn	number	Seconds until expiry
expiresAt	string	ISO 8601 expiry timestamp
statusCode	number	HTTP status code

Example

SDK Setup

const { MerchantAuthenticationClient } = require('hyperswitch-prism');

const authClient = new MerchantAuthenticationClient({
    connector: 'stripe',
    apiKey: 'YOUR_API_KEY',
    environment: 'SANDBOX'
});

Request

const request = {
    scope: "payment:write",
    expiresIn: 3600
};

const response = await authClient.createAccessToken(request);

Response

{
    accessToken: "sk_test_xxx",
    tokenType: "Bearer",
    expiresIn: 3600,
    expiresAt: "2024-01-15T11:30:00Z",
    statusCode: 200
}

Security Best Practices

• Use short expiry times (1 hour or less)
• Transmit only over HTTPS
• Never store tokens client-side long-term
• Implement token refresh logic

Next Steps

• createSessionToken - Create session tokens for multi-step flows
• Payment Service - Use tokens for payment operations