📐 Blueprint — describe any app, get a real system diagram you can export. Free, runs on GLM. More free tools →
Broke to Built · lab
Blueprint — AI System Diagram Generator

Describe an app in one plain sentence. The AI designs the real architecture — services, databases, queues, the lot — and the engine draws it as a clean, tiered system diagram you can export as PNG or SVG, or copy as Mermaid. Not a chat answer. An actual diagram.

describe a system above and hit Draw it.
No diagram yet
Type what you're building (or tap an example) and hit Draw it.
sync — request / response async — events / queues data — reads / writes
🔑 Unlimited diagrams — use your own free GLM key

Free tier is 40 diagrams/day on our shared key. Add your own GLM key (free to start) for unlimited on your own quota. Stored only in this browser, sent per-request — we never save it.

The "get one" link is our referral — costs you nothing extra and helps fund these free builds. 🙏

Advanced · the architecture contract (the JSON the AI emits)

Runs for $0: the AI designs the graph on GLM's free model, your browser draws it. Diagrams are deterministic — same JSON always renders the same. Better than asking a chatbot, because you get a real, editable, exportable diagram, not a wall of text. No sign-up, no catch.