How-to Guides

Short, task-focused recipes. Each guide solves one concrete job with a minimal snippet taken from a real example app, and assumes you already have an app skeleton building — if you don’t, start with the Quickstart.

I want to…	Guide
Pick the right table or collection and read/write it	Tables & Collections
Notify clients that something changed	Emit events
Tell or ask another app	Cross-app calls
Store a large binary and read it back	Files and blobs
Find records by the words in them	Search your app’s data
Check a captcha or a payment with an outside service, using a secret the app never sees	Call an external service
Run long work over private files outside the log	Compute actions
Restrict who may call a method or write a record	Access control
Let several people edit one text at once	Collaborative text

Browse the example appsEvery snippet here is lifted from a runnable app under apps/.

Collection referenceTables, collections, pages, costs and limits.