Plan & Act
Plan & Act modes embody Sypha's methodology for structured AI development, prioritizing thoughtful planning prior to implementation. This dual-mode framework assists developers in creating more maintainable, accurate code while minimizing iteration time.
Plan Mode: Think First
Plan mode serves as the space where you and Sypha determine what you're attempting to construct and your construction methodology. Within this mode, Sypha:
- Possesses the ability to read your complete codebase to comprehend the context
- Will not implement any modifications to your files
- Concentrates on comprehending requirements and developing a strategy
- Assists in identifying potential issues prior to writing a single line of code
Attempt Dictation in Plan mode - rather than typing out complex requirements, you can articulate naturally and share your complete thought process. It's ideal for rapid back-and-forth planning discussions.
Act Mode: Build It
After establishing a plan, you transition to Act mode. Now Sypha:
- Possesses all the building capabilities at its disposal
- Can implement changes to your codebase
- Retains everything from your planning session
- Executes the strategy you developed together
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Workflow Guide
When I'm developing a new feature or resolving a complex bug, here's my effective approach:
- I begin in Plan mode and communicate to Sypha what I want to construct
- Sypha assists me in exploring the codebase, examining relevant files
- Together we determine the optimal approach, considering edge cases and potential issues
- When I'm confident in our plan, I transition to Act mode
- Sypha implements the solution according to our planning
1. Start with Plan Mode
Initiate every significant development task in Plan mode:
Within this mode:
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- Communicate your requirements
- Allow Sypha to analyze relevant files
- Participate in dialogue to clarify objectives
- Develop implementation strategy
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2. Switch to Act Mode
After establishing a clear plan, transition to Act mode:

Act mode enables Sypha to:
- Execute according to the agreed plan
- Implement changes to your codebase
- Preserve context from planning phase
3. Iterate as Needed
Complex projects frequently require multiple plan-act cycles:
- Return to Plan mode when encountering unexpected complexity
- Utilize Act mode for implementing solutions
- Maintain development momentum while guaranteeing quality
Best Practices
Planning Phase
- Be comprehensive with requirements
- Communicate relevant context upfront
- Direct Sypha to relevant files if he hasn't examined them
- Validate approach prior to implementation
Implementation Phase
- Follow the established plan
- Monitor progress according to objectives
- Track modifications and their impact
- Document significant decisions
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Power User Tips
Enhancing Planning
- Utilize Plan mode to explore edge cases prior to implementation
- Transition back to Plan when encountering unexpected complexity
- Leverage file reading to validate assumptions early
- Have Sypha create markdown files of the plan for future reference
Common Patterns
When to Use Each Mode
I've discovered Plan mode performs optimally when:
- Initiating something new where the approach isn't evident
- Debugging a complex issue where I'm uncertain what's wrong
- Making architectural decisions that will impact multiple parts of the codebase
- Attempting to comprehend a complex workflow or feature
And Act mode is ideal for:
- Implementing a solution we've already planned out
- Making routine modifications where the approach is clear
- Following established patterns in the codebase
- Running tests and making minor adjustments
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Contributing
Share your experiences and improvements:
- Join our Discord community
- Participate in discussions
- Submit feature requests
- Report issues
Remember: The time invested in planning yields dividends in implementation quality and maintenance efficiency.