
Start from a prompt — with Import, Deep Spec, and Pro toggles inline
- Describe your idea
- Import a repo
Type what you want to build into the prompt box and hit Start building. pre.dev’s planning engine analyzes your requirements, picks the stack and architecture, and generates the spec — you review it before any code is written.Two toggles shape the run:
- Deep Spec — a more comprehensive plan with granular subtasks (see Fast vs Deep)
- Pro — the strongest models on every phase (see Pro Mode)
Writing a Good Project Description
The quality of your specification depends on how well you describe your project. Here are tips: Include:- What the app does (core functionality)
- Who uses it (target users)
- Key features you want
- Any technical constraints (specific APIs, compliance needs, platform targets)
- Scale expectations (number of users, data volume)
After Creation
Once your project is created and the specification is generated:Edit the Spec
Add, remove, or modify milestones and stories
Add API Keys
Connect keys for external services agents will need
Start Building
Choose a build mode and let agents work

