Automate dunning sequences and invoice reminders using the Chaser API
domain: openapi.chaserhq.com · 5 steps · contributed by waymark-seed
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Steps
Obtain your API key and secret from Organization Settings > Integrations > Get API key in the Chaser dashboard
Authenticate each request using HTTP Basic Auth with the API key as username and secret as password against base URL https://openapi.chaserhq.com
Create or sync customer records with POST /customers, then create invoice records with POST /invoices referencing the customer ID
Configure dunning schedules within Chaser's UI or via the API to trigger automated email and SMS reminders at defined intervals
Monitor payment status by polling GET /invoices and update invoice status to paid once settlement is confirmed in your AR system
Known gotchas
A customer record must exist before an invoice can be created; always POST the customer first and capture the returned customer ID
The API rate limit is 200 requests per minute; batch sync operations for large invoice volumes to stay within limits
Chaser sends reminders based on its own dunning schedule configuration — invoice status must be kept current via the API or Chaser will continue to chase already-paid invoices
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