To begin using the Callr API

1. Create your Callr account

Account registrations are reviewed - please provide your professional details.

2. Start building (free trial)

Your account begins in Build Mode, so take your time to explore and test the platform.

3. Create an API key

Generate an API key and send your first request!

First steps

Once your Callr account is approved, you can log in the Callr Portal. You'll be greeted with this screen:

Build mode & Testing Numbers

While your account is in Build Mode, you can only make Outbound Calls to your Testing Numbers - phone numbers you personally own and can receive calls or SMS on.

If you don’t add one during setup, don’t worry — you can register a Testing Number later.

The next screen will outline some basic rules for using your free trial.
Make sure to read them carefully so you know what’s allowed while in Build Mode.

Dashboard

Once setup is complete, you'll land on your Dashboard.

Click CREATE API KEY, then give your key a name:

The API Key will be shown only once - right after you click CREATE. Make sure to copy and store it securely.

We store one-way hashes of API keys and have no way to display them again.

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Make sure you follow all the Best Practices to store and manage API Keys!

Send your first request!

Once you have your API Key, you are ready to make your first request.

curl --request GET \
     --url https://api.callr.com/v2.0/ping \
     --header 'accept: application/json'
     --header 'x-api-key: <your-callr-api-key>'

We may also send your first request online.