Request a sandbox key.
A sandbox key runs the same clearing pipeline as production, without production clearance. Send your name, work email, and company, and we email a verification link. After you verify, we issue a gsk_sandbox_… key and an HMAC secret. Issuance follows verification and is not instant. You can read the API Documentation with no account. A live key is a separate step at Production Access.
The key goes to your verified work email, once.
We email the key one time and cannot show it again, so store it when it arrives.
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