Prerequisites
Before you begin, you’ll need:- An API key from Modulus Labs (contact support@moduluslabs.io)
- curl or any HTTP client (Postman, HTTPie, etc.)
Step 1: Verify Your Key
Test that your API key works by listing your merchants:Save one of the
id values — you’ll use it to filter transactions in the next step.Step 2: List Transactions
Fetch the latest transactions for a merchant:Step 3: Filter by Payment Method
Get only QR transactions:Step 4: Filter by Status and Date
Get captured transactions for a specific month:Step 5: Get Transaction Detail
Retrieve full detail for a specific transaction:Step 6: Paginate Through Results
Whenhas_more is true, use the next_cursor to get the next page:
has_more is false.
What’s Next?
Authentication
Understand API keys and entity scoping
Filtering & Sorting
Learn all available filters and sort options