---
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"
---

<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 or unavailable, you MUST stop and present the questions as a plain-text numbered list, then wait for the user's reply. Do NOT pick a default and continue (#3018).
- You may only proceed without a user answer when one of these is true:
  (a) the invocation included an explicit non-interactive flag (`--auto` or `--all`),
  (b) the user has explicitly approved a specific default for this question, or
  (c) the workflow's documented contract says defaults are safe (e.g. autonomous lifecycle paths).
- Do NOT write workflow artifacts (CONTEXT.md, DISCUSSION-LOG.md, PLAN.md, checkpoint files) until the user has answered the plain-text questions or one of (a)-(c) above applies. Surfacing the questions and waiting is the correct response — silently defaulting and writing artifacts is the #3018 failure mode.

## 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. `spawn_agent` has no inline `model` parameter;
  GSD embeds the resolved per-agent model directly into each agent's `.toml`
  at install time so `model_overrides` from `.planning/config.json` and
  `~/.gsd/defaults.json` are honored automatically by Codex's agent router.
- Resolved `reasoning_effort="low|medium|high|xhigh"` (`xhigh` is a GSD/Codex tier, not a generic runtime enum) → pass `reasoning_effort`
  to `spawn_agent` when the runtime/tool supports it. Omit missing, empty,
  inherited, or unsupported values; do not invent one-off effort literals in
  workflow prose.
- `fork_context: false` by default — GSD agents load their own context via `<files_to_read>` blocks
- `Task(isolation="worktree")` / `Agent(isolation="worktree")` → no direct Codex mapping.
  Codex `spawn_agent` does not create or bind a git worktree automatically.
  Workflows that require this isolation must fail closed or use an explicit
  manual worktree protocol before spawning (#3360).

Spawn restriction:
- Codex restricts `spawn_agent` to cases where the user has explicitly
  requested sub-agents. When automatic spawning is not permitted, do the
  work inline in the current agent rather than attempting to force a spawn.

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>
@$HOME/.codex/get-shit-done/workflows/map-codebase.md
</execution_context>

<flags>
- **--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 <term>`, `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.
</flags>

<context>
Arguments: {{GSD_ARGS}}

Parse the first token of {{GSD_ARGS}}:
- If it is `--fast`: strip the flag, run the scan workflow (passing remaining args including optional --focus).
- If it is `--query`: strip the flag, run the intel workflow (passing remaining args as the subcommand).
- Otherwise: pass all of {{GSD_ARGS}} 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:**
- 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>