Trial data is rate-limited and automatically deleted after 30 days. When your trial key is issued, Zamp automatically configures the test environment to include all 47 remote seller state registrations.
Request your API key
Fill out the form below with your business email. Once you submit, we’ll email your trial API key to that address.Check your email
Your trial API key arrives by email at the address you provided.- The key is valid for 30 days.
- All test-environment data is automatically deleted after 30 days.
- Keep your key safe, and request a new one if you suspect it has been compromised.
Authenticate and start testing
Add your key to theAuthorization header to authenticate requests — see Authentication for details.
Once you’re authenticated, follow the Quickstart to run your first tax calculation and post a transaction.