read and write any record as JSON
Your key, for auth=:
It works for an hour; reload the page for a new one. Anyone with it can act as you for that hour, so keep it to yourself.
Every record is JSON at its path in the database, so a signed-in user can read or write one with a single request: PUT https://firerpapp-default-rtdb.firebaseio.com/companies/<business>/kids/<list>/kids/<record>.json?auth=<Firebase ID token> with {"v": {"field": "value"}} (GET reads it, DELETE removes it). The same rules apply as in the app: a private business is its owner's alone, the shared demos are open to everyone. The caller is responsible for valid values: the form's checks (required, unique, ranges, patterns, rules) and auto numbers run in the page.