Builders · Free Developer API

Get your free developer key

For builders integrating Check Write™. Enterprise teams evaluating AI action assurance should request invite-only Live Lab Access instead.

Request Live Lab Access →

BUILD → FIRST CHECK WRITE
  1. Enter email
  2. Verify OTP
  3. Generate key
  4. Copy key
  5. Run first request

We email a one-time code. Personal or work email is fine. If it does not arrive within a minute, check spam or promotions.

Free · 1,000 checks/month · tc_dev_ keys. Builder sandbox at /check-write needs no key. Enterprise path: Live Assurance Lab.

Install @tekcapitol/tc-protect-sdk from npm. Same key works with the SDK and direct API calls. View examples →