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Free sandbox
Build and test with test credentials that simulate calls and messages, with no charges and no real phones.
4 min- 1
Use a test key
Keys starting with cb_test_ only ever talk to the sandbox.
export COVEBYTE_KEY=cb_test_•••• - 2
Use magic numbers
Special test numbers trigger specific outcomes, like busy, no answer or voicemail.
to: '+15005550006' // always answers - 3
Go live
Swap the test key for a live key. Your code stays the same.
- ✓
You’re done
Need help taking this to production? Our engineers can review your setup.