The Playground is the fastest way to try something on nostackai without writing a client first. It's a real app-tier client — every call it makes is a genuine, authenticated request against your org, exactly like a real app would send.
What you can test
| Feature | What it covers |
|---|---|
| Auth & Account | Register, login, profile, change/forgot/reset password. |
| Tenancy | List, create, and join tenants; switch tenant from the top bar. |
| Entities (CRUD) | Generic list, get, count, create, update, delete against any entity you've defined. |
| Public Access | The no-login create + read flow for entities that opt into it. |
| Field Upload | Presign → upload → save on a record → render, via the data CDN. |
| Content | Free-form file upload, list, share, publish, and delete. |
| Logic Blocks | Run any custom API endpoint you've built. |
| Agents | Invoke an agent crew. |
| AI Chat (WebSocket) | Run a Logic Block over the WebSocket gateway — ai_call tokens stream back live, exactly like a real chat UI would see them. |
| Connectors | Browse every connector your org can adopt, see what an org admin and tenant admin each need to configure, then test any action using only that action's own fields. |
Setting it up — in this order
Each step below fixes a specific, otherwise-confusing failure if skipped — worth doing in order rather than guessing where a broken call is coming from.
Two different-looking failures, two different causes
A CORS error in DevTools means step 2 (Allowed Domains) is missing. A plain 403 "Forbidden" on login or register means your API key is wrong — don't chase the wrong one when troubleshooting.
Scenario packs — a guided shortcut
A handful of prebuilt demo scenarios (an e-commerce flow, a car-buying flow, an AI-chat-over-WebSocket flow) each ship a step-by-step playbook with real, pre-filled example payloads. Once a pack's prerequisite entities exist in API Studio, you can click through a realistic, working multi-step flow instead of constructing every request from scratch — a good starting point before building your own test scenario by hand.