| name | gsd-map-codebase |
| description | Analyze codebase with parallel mapper agents to produce .planning/codebase/ documents |
| argument-hint | [--fast [--focus tech|arch|quality|concerns]] [--query <term>|status|diff|refresh] [area] |
| allowed-tools | ["Read","Bash","Glob","Grep","Write","Agent"] |
Analyze existing codebase using parallel gsd-codebase-mapper agents to produce structured codebase documents.
Each mapper agent explores a focus area and writes documents directly to .planning/codebase/. The orchestrator only receives confirmations, keeping context usage minimal.
Output: .planning/codebase/ folder with 7 structured documents about the codebase state.
<execution_context>
@~/.claude/gsd-core/workflows/map-codebase.md
</execution_context>
- **--fast**: Lightweight scan mode — spawns one mapper agent instead of four. Accepts an optional `--focus` value: `tech`, `arch`, `quality`, `concerns`, or `tech+arch` (default). Faster and lower-context than the full map.
- **--query**: Codebase intelligence query mode. Sub-commands: `query `, `status`, `diff`, `refresh`. Requires intel to be enabled in config (`intel.enabled: true`). Runs inline for query/status/diff; spawns an agent for refresh.
- **(no flag)**: Full parallel map — spawns 4 mapper agents to produce all 7 codebase documents.
Arguments: $ARGUMENTS
Parse the first token of $ARGUMENTS:
- If it is
--fast: strip the flag, then read and execute ~/.claude/gsd-core/workflows/scan.md (passing remaining args including optional --focus). Load it on demand here — it is deliberately not in <execution_context>, so the common full-map path does not pay for it.
- If it is
--query: strip the flag, run the intel workflow (passing remaining args as the subcommand).
- Otherwise: pass all of $ARGUMENTS as focus area to the map-codebase workflow.
Load project state if exists:
Check for .planning/STATE.md - loads context if project already initialized
This command can run:
- Via /gsd-onboard for first-time brownfield setup - creates codebase map first
- After /gsd-new-project (greenfield codebases) - updates codebase map as code evolves
- Anytime to refresh codebase understanding
<when_to_use>
Use map-codebase for:
- Brownfield projects before initialization (understand existing code first)
- Refreshing codebase map after significant changes
- Refreshing or deepening an onboarded codebase map
- Before major refactoring (understand current state)
- When STATE.md references outdated codebase info
Skip map-codebase for:
- Greenfield projects with no code yet (nothing to map)
- Trivial codebases (<5 files)
</when_to_use>
1. Check if .planning/codebase/ already exists (offer to refresh or skip)
2. Create .planning/codebase/ directory structure
3. Spawn 4 parallel gsd-codebase-mapper agents:
- Agent 1: tech focus → writes STACK.md, INTEGRATIONS.md
- Agent 2: arch focus → writes ARCHITECTURE.md, STRUCTURE.md
- Agent 3: quality focus → writes CONVENTIONS.md, TESTING.md
- Agent 4: concerns focus → writes CONCERNS.md
4. Wait for agents to complete, collect confirmations (NOT document contents)
5. Verify all 7 documents exist with line counts
6. Commit codebase map
7. Offer next steps (typically: /gsd-onboard, /gsd-new-project, or /gsd-plan-phase)
<success_criteria>
