majiayu000 Doc Navigator
Navigate codebase documentation efficiently by checking known doc locations first, before resorting to grep/glob searches.
When to Use
- Finding architectural decisions (ADRs)
- Locating feature specs or API docs
- Researching codebase before implementation
- Suggesting documentation structure for new projects
- Alternative to grep/glob for doc discovery
Quick Start
- Check for docs directory at project root
- Scan for common doc file patterns
- If docs exist → map topics to locations
- If no docs → suggest documentation structure (see
references/doc-patterns.md)
Common Documentation Locations
Check these locations in order:
project-root/
├── docs/ # Primary documentation
│ ├── architecture/ # System design, ADRs
│ ├── features/ # Feature specs
│ ├── api/ # API documentation
│ └── guides/ # How-to guides
├── .github/ # GitHub-specific docs
│ └── docs/
├── README.md # Project overview
├── ARCHITECTURE.md # High-level architecture
├── CONTRIBUTING.md # Contribution guidelines
└── doc/ or documentation/ # Alternative doc folders
Topic-to-Location Mapping
| Looking for... | Check first |
|---|---|
| Project overview | README.md |
| Architecture/design | docs/architecture/, ARCHITECTURE.md, docs/adr/ |
| Feature specs | docs/features/, docs/specs/ |
| API reference | docs/api/, api-docs/, OpenAPI/Swagger files |
| Setup/installation | docs/guides/setup.md, INSTALL.md |
| Database schema | docs/database/, docs/schema/, prisma/schema.prisma |
| Data types/models | docs/types/, docs/models/, src/types/, src/models/ |
| Style guide | docs/style-guide.md, docs/conventions.md, .eslintrc, STYLE.md |
| Environment config | docs/config/, .env.example, docs/environment.md |
| Testing strategy | docs/testing/, tests/README.md |
| Deployment | docs/deployment/, docs/infrastructure/ |
| ADRs (decisions) | docs/adr/, docs/decisions/, architecture/decisions/ |
| ADRs (fallback) | CHANGELOG.md, git log, PR descriptions, code comments |
Discovery Workflow
1. ls docs/ (or doc/, documentation/)
↓ exists?
YES → scan structure, build topic map
NO → check for standalone doc files (*.md in root)
↓ found?
YES → use available docs
NO → suggest creating docs structure
(see references/doc-patterns.md)
Automated Discovery
Run the scanner script to map available documentation:
python3 scripts/scan_docs.py [project-path]
Output: JSON map of topics → file locations
When Docs Don't Exist
If the codebase lacks documentation:
- Inform user: "No documentation structure found"
- Offer to create starter docs:
view references/doc-patterns.md - Suggest minimal viable structure based on project type
Finding Decisions Without ADRs
If no formal ADRs exist, extract architectural context from:
CHANGELOG.md → Breaking changes, migration rationale
git log → Commits w/ "migrate", "refactor", "replace"
PR/MR descriptions → Discussion threads on major changes
Issue tracker → Closed RFCs, architecture proposals
Code comments → // DECISION:, // WHY:, // HACK:
See references/doc-patterns.md → "Fallback: When No ADRs Exist" for git commands & reconstruction templates.
Integration with Research Phase
Use doc-navigator BEFORE grep/glob when:
- Starting work on unfamiliar codebase
- Looking for architectural context
- Understanding feature implementations
- Finding API contracts or schemas
Fall back to grep/glob when:
- Docs don't cover the specific topic
- Need to find implementation details in code
- Searching for specific function/class usage
Ref: references/doc-patterns.md for documentation templates when establishing new docs.