Craton is self-service: no form, no email, no payment details, nobody to ask. The first time you open this page it creates one free sandbox account for you and keeps its key in this browser; it never creates a second one, however often you reload. Start over clears the key from this browser and lets the page create a fresh account next time.

There is one exception, and it is the only one. If the server answers 401 to the key this browser is holding — the account is not one it knows, which is what a key kept from a sandbox that has since been rebuilt looks like — then that record is unusable by any route and nothing exists under it. On the walk's first call the page replaces it once: it forgets the record, creates a fresh sandbox account and sends your file again. Once per visit, never in a loop, and never after the walk has made something the old account owns — in that case the screen says what happened and start over is right there on it.

Nothing you choose leaves this browser except as the body of one request to Craton. The sample is the same two-row schedule the quickstart uses: ordinary spreadsheet columns, money written with currency symbols and thousands separators, a peril spelled the way a person spells it.

A trigger-based structure pays on a measurement, not on a loss adjuster's report: something measurable happens inside a stated region, and a fixed fraction of the limit is due. Nothing about your buildings decides the payout — only the measurement the index names.