This environment lets you get started with our API before even creating an account. Head to our Demo Environment. Go to settings and grab the API Key/Secret to try a cURL post or use the following.

curl --request GET \ 
--url 'https://demo.checkbook.io/v3/check' \
--header "Accept: application/json" \
--header 'Authorization: d6aa2703655f4ba2af2a56202961ca86:dXbCgzYBMibj8ZwuQMd2NXr6rtvjZ8

🚧

Demo Keys

Use the following Authorization value for the "Header Auth" in the interactive docs to test the requests:

d6aa2703655f4ba2af2a56202961ca86:dXbCgzYBMibj8ZwuQMd2NXr6rtvjZ8

You can also click on this link to refresh the API reference and have the Demo Keys pre-populated.