Gsd Map Codebase

---
name: "gsd-map-codebase"
description: "Analyze codebase with parallel mapper agents to produce .planning/codebase/ documents"
metadata:
  short-description: "Analyze codebase with parallel mapper agents to produce .planning/codebase/ documents"
risk: safe
---

<codex_skill_adapter>
## A. Skill Invocation
- This skill is invoked by mentioning `$gsd-map-codebase`.
- Treat all user text after `$gsd-map-codebase` as `{{GSD_ARGS}}`.
- If no arguments are present, treat `{{GSD_ARGS}}` as empty.

## B. AskUserQuestion → request_user_input Mapping
GSD workflows use `AskUserQuestion` (Claude Code syntax). Translate to Codex `request_user_input`:

Parameter mapping:
- `header` → `header`
- `question` → `question`
- Options formatted as `"Label" — description` → `{label: "Label", description: "description"}`
- Generate `id` from header: lowercase, replace spaces with underscores

Batched calls:
- `AskUserQuestion([q1, q2])` → single `request_user_input` with multiple entries in `questions[]`

Multi-select workaround:
- Codex has no `multiSelect`. Use sequential single-selects, or present a numbered freeform list asking the user to enter comma-separated numbers.

Execute mode fallback:
- When `request_user_input` is rejected (Execute mode), present a plain-text numbered list and pick a reasonable default.

## C. Task() → spawn_agent Mapping
GSD workflows use `Task(...)` (Claude Code syntax). Translate to Codex collaboration tools:

Direct mapping:
- `Task(subagent_type="X", prompt="Y")` → `spawn_agent(agent_type="X", message="Y")`
- `Task(model="...")` → omit (Codex uses per-role config, not inline model selection)
- `fork_context: false` by default — GSD agents load their own context via `<files_to_read>` blocks

Parallel fan-out:
- Spawn multiple agents → collect agent IDs → `wait(ids)` for all to complete

Result parsing:
- Look for structured markers in agent output: `CHECKPOINT`, `PLAN COMPLETE`, `SUMMARY`, etc.
- `close_agent(id)` after collecting results from each agent
</codex_skill_adapter>

<objective>
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.
</objective>

<execution_context>
@C:/Users/nicol/.codex/get-shit-done/workflows/map-codebase.md
</execution_context>

<context>
Focus area: {{GSD_ARGS}} (optional - if provided, tells agents to focus on specific subsystem)

**Load project state if exists:**
Check for .planning/STATE.md - loads context if project already initialized

**This command can run:**
- Before $gsd-new-project (brownfield codebases) - creates codebase map first
- After $gsd-new-project (greenfield codebases) - updates codebase map as code evolves
- Anytime to refresh codebase understanding
</context>

<when_to_use>
**Use map-codebase for:**
- Brownfield projects before initialization (understand existing code first)
- Refreshing codebase map after significant changes
- Onboarding to an unfamiliar codebase
- 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>

<process>
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-new-project or $gsd-plan-phase)
</process>

<success_criteria>
- [ ] .planning/codebase/ directory created
- [ ] All 7 codebase documents written by mapper agents
- [ ] Documents follow template structure
- [ ] Parallel agents completed without errors
- [ ] User knows next steps
</success_criteria>