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BMAD-METHOD/docs/_basement/how-to/brownfield/add-feature-to-existing.md
Alex Verkhovsky 91f6c41be1 docs: radical reduction of documentation scope for v6 beta (#1406)
* docs: radical reduction of documentation scope for v6 beta

Archive and basement unreviewed content to ship a focused, minimal doc set.

Changes:
- Archive stale how-to workflow guides (will rewrite for v6)
- Archive outdated explanation and reference content
- Move unreviewed content to basement for later review
- Reorganize TEA docs into dedicated /tea/ section
- Add workflow-map visual reference page
- Simplify getting-started tutorial and sidebar navigation
- Add explanation pages: brainstorming, adversarial-review, party-mode,
  quick-flow, advanced-elicitation
- Fix base URL handling for subdirectory deployments (GitHub Pages forks)

The goal is a minimal, accurate doc set for beta rather than
comprehensive but potentially misleading content.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* refactor: restructure BMM and agents documentation by consolidating and flattening index files.

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Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-25 14:00:26 -06:00

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Markdown

---
title: "How to Add a Feature to an Existing Project"
description: How to add new features to an existing brownfield project
---
Use the `workflow-init` workflow to add new functionality to your brownfield codebase while respecting existing patterns and architecture.
## When to Use This
- Adding a new feature to an existing codebase
- Major enhancements that need proper planning
- Features that touch multiple parts of the system
:::note[Prerequisites]
- BMad Method installed
- Existing project documentation (run `document-project` first if needed)
- Clear understanding of what you want to build
:::
## Steps
### 1. Run workflow-init
```
Run workflow-init
```
The workflow should recognize you're in an existing project. If not, explicitly clarify that this is brownfield development.
### 2. Choose Your Approach
| Feature Scope | Recommended Approach |
|---------------|---------------------|
| Small (1-5 stories) | Quick Flow with tech-spec |
| Medium (5-15 stories) | BMad Method with PRD |
| Large (15+ stories) | Full BMad Method with architecture |
### 3. Create Planning Documents
**For Quick Flow:**
- Load PM agent
- Run tech-spec workflow
- The agent will analyze your existing codebase and create a context-aware spec
**For BMad Method:**
- Load PM agent
- Run PRD workflow
- Ensure the agent reads your existing documentation
- Review that integration points are clearly identified
### 4. Consider Architecture Impact
If your feature affects system architecture:
- Load Architect agent
- Run architecture workflow
- Ensure alignment with existing patterns
- Document any new ADRs (Architecture Decision Records)
### 5. Implement
Follow the standard Phase 4 implementation workflows:
1. `sprint-planning` - Organize your work
2. `create-story` - Prepare each story
3. `dev-story` - Implement with tests
4. `code-review` - Quality assurance
## Tips
- Always ensure agents read your existing documentation
- Pay attention to integration points with existing code
- Follow existing conventions unless deliberately changing them
- Document why you're adding new patterns (if any)