Get a key
You do not need one to start: the gateway works anonymously at a low rate limit. A key gives you your own limit and receipts. Email address only, no password.
What a key is for
It is a bearer token. Send it as Authorization: Bearer <key>. Every call is
logged against it, which is what lets us connect a booking back to the quote your agent found.
We store only a hash of it, so we cannot show it to you again. Rate limit is 120 calls a minute by default. Ask if you need more.
Why not OAuth
Because a key works in every client that can set a header, and can be issued and
rotated in a minute. The cost is that the Claude and ChatGPT connector directories require OAuth,
so listing there waits. A 401 means the key you sent was not recognised; no header at
all is simply anonymous.