Before you begin

You need four things from your fulfillmenttools onboarding email or your admin. They are not all obvious, so:

What	Looks like	Notes
Base URL	https://ocff-acme-pre.api.fulfillmenttools.com	The full host. Don't try to build it from the project id — the official docs disagree with themselves about the prefix. Copy whatever a working curl call or the onboarding email uses.
fulfillmenttools API key	AIzaSy…	A Firebase Web API key — the value in ?key= on the Google sign-in URL. Kept in the keychain, never sent to fulfillmenttools — see Authentication.
Username	jane.doe	Your login name, not an email address.
Password

Plus the project id (acme) and environment (pre or prd) — fft needs them to derive your sign-in email, which is synthetic: {username}@ocff-{projectId}-{env}.com. If you already know the full email, pass that instead and the other two become unnecessary.