More than a box with a name.
Keep the full prompt and the input/output contract on the agent node. Read the contract on the canvas; open the prompt when you need the detail.
For the solo AI builder
Turn your prompt chain into a design you can implement.
Give every agent a prompt, clear inputs and an expected output. Connect the pieces. Work out what depends on what—before you write the code.
A visual design tool. No model execution. No API keys.
THE UNIT OF DESIGN
Brief agentAgent
IN
source_notesOUT
evidence_briefPROMPT
Read {{source_notes}}. Write an evidence brief with observations, source labels, and unresolved questions.
One node. One responsibility.
A contract the next node can depend on.
From a prompt to a system
Think in nodes. See the whole chain.
One fictional workflow, four design decisions.
Explore the example steps, then try your own blank canvas.
01 / DEFINE
Read the agent’s input and output, then open its prompt.
Opening the demo workspace…
Temporary workspace. Reload resets it. Export to keep your edits.No prompts are sent to a model.
01 / DEFINE
Steps load example snapshots. Edits are temporary.
- Inputs
- Expected output
Read the full prompt
A place to work out the architecture
The decisions belong beside the diagram.
Make the dependency visible.
Label what passes between nodes. Reconnect an input and rearrange the cards as your understanding of the system changes.
Carry the design into the build.
Export Markdown to brief yourself or a coding agent. Keep JSON for a portable backup of the prompts, connections and layout.
Deliberately focused
Design here.
Build and run elsewhere.
For the moment when a prompt chain has become too much to hold in your head—and you want to reason about it one node at a time.
In the app today
Visual authoring, node prompts and contracts, labeled connections, account saving, browser-only storage, JSON backups and Markdown handoffs.
Outside this version
Model execution, prompt evaluation, generated code, real-time collaboration and live vault sync.
About this preview
This demo is disposable and resets on reload. Sign in to the full app to save diagrams and folders to your account and open them on another device. Browser-only mode is also available.
Start smaller than the system
What does your first agent need?
Add one node. Write its input, prompt and expected output.
Then decide what comes next.
No signup in this demo. Export anything you want to keep.