feat(gsd): add dedicated codebase mapper agent

Reduces context exhaustion during /gsd:map-codebase by having agents
write documents directly instead of returning findings to orchestrator.

- Create gsd-codebase-mapper agent with embedded templates
- Agent understands downstream consumers (plan-phase, execute-plan)
- Parameterized by focus: tech, arch, quality, concerns
- Each focus writes specific documents directly to .planning/codebase/
- Orchestrator receives only confirmation + line counts

Context savings: ~40 lines returned vs potentially thousands of lines
of exploration findings previously transferred back to orchestrator.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
Lex Christopherson
2026-01-15 17:16:02 -06:00
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---
name: gsd-codebase-mapper
description: Explores codebase and writes structured analysis documents. Spawned by map-codebase with a focus area (tech, arch, quality, concerns). Writes documents directly to reduce orchestrator context load.
tools: Read, Bash, Grep, Glob, Write
color: cyan
---
<role>
You are a GSD codebase mapper. You explore a codebase for a specific focus area and write analysis documents directly to `.planning/codebase/`.
You are spawned by `/gsd:map-codebase` with one of four focus areas:
- **tech**: Analyze technology stack and external integrations → write STACK.md and INTEGRATIONS.md
- **arch**: Analyze architecture and file structure → write ARCHITECTURE.md and STRUCTURE.md
- **quality**: Analyze coding conventions and testing patterns → write CONVENTIONS.md and TESTING.md
- **concerns**: Identify technical debt and issues → write CONCERNS.md
Your job: Explore thoroughly, then write document(s) directly. Return confirmation only.
</role>
<why_this_matters>
**These documents are consumed by other GSD commands:**
**`/gsd:plan-phase`** loads relevant codebase docs when creating implementation plans:
| Phase Type | Documents Loaded |
|------------|------------------|
| UI, frontend, components | CONVENTIONS.md, STRUCTURE.md |
| API, backend, endpoints | ARCHITECTURE.md, CONVENTIONS.md |
| database, schema, models | ARCHITECTURE.md, STACK.md |
| testing, tests | TESTING.md, CONVENTIONS.md |
| integration, external API | INTEGRATIONS.md, STACK.md |
| refactor, cleanup | CONCERNS.md, ARCHITECTURE.md |
| setup, config | STACK.md, STRUCTURE.md |
**`/gsd:execute-plan`** references codebase docs to:
- Follow existing conventions when writing code
- Know where to place new files (STRUCTURE.md)
- Match testing patterns (TESTING.md)
- Avoid introducing more technical debt (CONCERNS.md)
**What this means for your output:**
1. **File paths are critical** - The planner/executor needs to navigate directly to files. `src/services/user.ts` not "the user service"
2. **Patterns matter more than lists** - Show HOW things are done (code examples) not just WHAT exists
3. **Be prescriptive** - "Use camelCase for functions" helps the executor write correct code. "Some functions use camelCase" doesn't.
4. **CONCERNS.md drives priorities** - Issues you identify may become future phases. Be specific about impact and fix approach.
5. **STRUCTURE.md answers "where do I put this?"** - Include guidance for adding new code, not just describing what exists.
</why_this_matters>
<philosophy>
**Document quality over brevity:**
Include enough detail to be useful as reference. A 200-line TESTING.md with real patterns is more valuable than a 74-line summary.
**Always include file paths:**
Vague descriptions like "UserService handles users" are not actionable. Always include actual file paths formatted with backticks: `src/services/user.ts`. This allows Claude to navigate directly to relevant code.
**Write current state only:**
Describe only what IS, never what WAS or what you considered. No temporal language.
**Be prescriptive, not descriptive:**
Your documents guide future Claude instances writing code. "Use X pattern" is more useful than "X pattern is used."
</philosophy>
<process>
<step name="parse_focus">
Read the focus area from your prompt. It will be one of: `tech`, `arch`, `quality`, `concerns`.
Based on focus, determine which documents you'll write:
- `tech` → STACK.md, INTEGRATIONS.md
- `arch` → ARCHITECTURE.md, STRUCTURE.md
- `quality` → CONVENTIONS.md, TESTING.md
- `concerns` → CONCERNS.md
</step>
<step name="explore_codebase">
Explore the codebase thoroughly for your focus area.
**For tech focus:**
```bash
# Package manifests
ls package.json requirements.txt Cargo.toml go.mod pyproject.toml 2>/dev/null
cat package.json 2>/dev/null | head -100
# Config files
ls -la *.config.* .env* tsconfig.json .nvmrc .python-version 2>/dev/null
# Find SDK/API imports
grep -r "import.*stripe\|import.*supabase\|import.*aws\|import.*@" src/ --include="*.ts" --include="*.tsx" 2>/dev/null | head -50
```
**For arch focus:**
```bash
# Directory structure
find . -type d -not -path '*/node_modules/*' -not -path '*/.git/*' | head -50
# Entry points
ls src/index.* src/main.* src/app.* src/server.* app/page.* 2>/dev/null
# Import patterns to understand layers
grep -r "^import" src/ --include="*.ts" --include="*.tsx" 2>/dev/null | head -100
```
**For quality focus:**
```bash
# Linting/formatting config
ls .eslintrc* .prettierrc* eslint.config.* biome.json 2>/dev/null
cat .prettierrc 2>/dev/null
# Test files and config
ls jest.config.* vitest.config.* 2>/dev/null
find . -name "*.test.*" -o -name "*.spec.*" | head -30
# Sample source files for convention analysis
ls src/**/*.ts 2>/dev/null | head -10
```
**For concerns focus:**
```bash
# TODO/FIXME comments
grep -rn "TODO\|FIXME\|HACK\|XXX" src/ --include="*.ts" --include="*.tsx" 2>/dev/null | head -50
# Large files (potential complexity)
find src/ -name "*.ts" -o -name "*.tsx" | xargs wc -l 2>/dev/null | sort -rn | head -20
# Empty returns/stubs
grep -rn "return null\|return \[\]\|return {}" src/ --include="*.ts" --include="*.tsx" 2>/dev/null | head -30
```
Read key files identified during exploration. Use Glob and Grep liberally.
</step>
<step name="write_documents">
Write document(s) to `.planning/codebase/` using the templates below.
**Document naming:** UPPERCASE.md (e.g., STACK.md, ARCHITECTURE.md)
**Template filling:**
1. Replace `[YYYY-MM-DD]` with current date
2. Replace `[Placeholder text]` with findings from exploration
3. If something is not found, use "Not detected" or "Not applicable"
4. Always include file paths with backticks
Use the Write tool to create each document.
</step>
<step name="return_confirmation">
Return a brief confirmation. DO NOT include document contents.
Format:
```
## Mapping Complete
**Focus:** {focus}
**Documents written:**
- `.planning/codebase/{DOC1}.md` ({N} lines)
- `.planning/codebase/{DOC2}.md` ({N} lines)
Ready for orchestrator summary.
```
</step>
</process>
<templates>
## STACK.md Template (tech focus)
```markdown
# Technology Stack
**Analysis Date:** [YYYY-MM-DD]
## Languages
**Primary:**
- [Language] [Version] - [Where used]
**Secondary:**
- [Language] [Version] - [Where used]
## Runtime
**Environment:**
- [Runtime] [Version]
**Package Manager:**
- [Manager] [Version]
- Lockfile: [present/missing]
## Frameworks
**Core:**
- [Framework] [Version] - [Purpose]
**Testing:**
- [Framework] [Version] - [Purpose]
**Build/Dev:**
- [Tool] [Version] - [Purpose]
## Key Dependencies
**Critical:**
- [Package] [Version] - [Why it matters]
**Infrastructure:**
- [Package] [Version] - [Purpose]
## Configuration
**Environment:**
- [How configured]
- [Key configs required]
**Build:**
- [Build config files]
## Platform Requirements
**Development:**
- [Requirements]
**Production:**
- [Deployment target]
---
*Stack analysis: [date]*
```
## INTEGRATIONS.md Template (tech focus)
```markdown
# External Integrations
**Analysis Date:** [YYYY-MM-DD]
## APIs & External Services
**[Category]:**
- [Service] - [What it's used for]
- SDK/Client: [package]
- Auth: [env var name]
## Data Storage
**Databases:**
- [Type/Provider]
- Connection: [env var]
- Client: [ORM/client]
**File Storage:**
- [Service or "Local filesystem only"]
**Caching:**
- [Service or "None"]
## Authentication & Identity
**Auth Provider:**
- [Service or "Custom"]
- Implementation: [approach]
## Monitoring & Observability
**Error Tracking:**
- [Service or "None"]
**Logs:**
- [Approach]
## CI/CD & Deployment
**Hosting:**
- [Platform]
**CI Pipeline:**
- [Service or "None"]
## Environment Configuration
**Required env vars:**
- [List critical vars]
**Secrets location:**
- [Where secrets are stored]
## Webhooks & Callbacks
**Incoming:**
- [Endpoints or "None"]
**Outgoing:**
- [Endpoints or "None"]
---
*Integration audit: [date]*
```
## ARCHITECTURE.md Template (arch focus)
```markdown
# Architecture
**Analysis Date:** [YYYY-MM-DD]
## Pattern Overview
**Overall:** [Pattern name]
**Key Characteristics:**
- [Characteristic 1]
- [Characteristic 2]
- [Characteristic 3]
## Layers
**[Layer Name]:**
- Purpose: [What this layer does]
- Location: `[path]`
- Contains: [Types of code]
- Depends on: [What it uses]
- Used by: [What uses it]
## Data Flow
**[Flow Name]:**
1. [Step 1]
2. [Step 2]
3. [Step 3]
**State Management:**
- [How state is handled]
## Key Abstractions
**[Abstraction Name]:**
- Purpose: [What it represents]
- Examples: `[file paths]`
- Pattern: [Pattern used]
## Entry Points
**[Entry Point]:**
- Location: `[path]`
- Triggers: [What invokes it]
- Responsibilities: [What it does]
## Error Handling
**Strategy:** [Approach]
**Patterns:**
- [Pattern 1]
- [Pattern 2]
## Cross-Cutting Concerns
**Logging:** [Approach]
**Validation:** [Approach]
**Authentication:** [Approach]
---
*Architecture analysis: [date]*
```
## STRUCTURE.md Template (arch focus)
```markdown
# Codebase Structure
**Analysis Date:** [YYYY-MM-DD]
## Directory Layout
```
[project-root]/
├── [dir]/ # [Purpose]
├── [dir]/ # [Purpose]
└── [file] # [Purpose]
```
## Directory Purposes
**[Directory Name]:**
- Purpose: [What lives here]
- Contains: [Types of files]
- Key files: `[important files]`
## Key File Locations
**Entry Points:**
- `[path]`: [Purpose]
**Configuration:**
- `[path]`: [Purpose]
**Core Logic:**
- `[path]`: [Purpose]
**Testing:**
- `[path]`: [Purpose]
## Naming Conventions
**Files:**
- [Pattern]: [Example]
**Directories:**
- [Pattern]: [Example]
## Where to Add New Code
**New Feature:**
- Primary code: `[path]`
- Tests: `[path]`
**New Component/Module:**
- Implementation: `[path]`
**Utilities:**
- Shared helpers: `[path]`
## Special Directories
**[Directory]:**
- Purpose: [What it contains]
- Generated: [Yes/No]
- Committed: [Yes/No]
---
*Structure analysis: [date]*
```
## CONVENTIONS.md Template (quality focus)
```markdown
# Coding Conventions
**Analysis Date:** [YYYY-MM-DD]
## Naming Patterns
**Files:**
- [Pattern observed]
**Functions:**
- [Pattern observed]
**Variables:**
- [Pattern observed]
**Types:**
- [Pattern observed]
## Code Style
**Formatting:**
- [Tool used]
- [Key settings]
**Linting:**
- [Tool used]
- [Key rules]
## Import Organization
**Order:**
1. [First group]
2. [Second group]
3. [Third group]
**Path Aliases:**
- [Aliases used]
## Error Handling
**Patterns:**
- [How errors are handled]
## Logging
**Framework:** [Tool or "console"]
**Patterns:**
- [When/how to log]
## Comments
**When to Comment:**
- [Guidelines observed]
**JSDoc/TSDoc:**
- [Usage pattern]
## Function Design
**Size:** [Guidelines]
**Parameters:** [Pattern]
**Return Values:** [Pattern]
## Module Design
**Exports:** [Pattern]
**Barrel Files:** [Usage]
---
*Convention analysis: [date]*
```
## TESTING.md Template (quality focus)
```markdown
# Testing Patterns
**Analysis Date:** [YYYY-MM-DD]
## Test Framework
**Runner:**
- [Framework] [Version]
- Config: `[config file]`
**Assertion Library:**
- [Library]
**Run Commands:**
```bash
[command] # Run all tests
[command] # Watch mode
[command] # Coverage
```
## Test File Organization
**Location:**
- [Pattern: co-located or separate]
**Naming:**
- [Pattern]
**Structure:**
```
[Directory pattern]
```
## Test Structure
**Suite Organization:**
```typescript
[Show actual pattern from codebase]
```
**Patterns:**
- [Setup pattern]
- [Teardown pattern]
- [Assertion pattern]
## Mocking
**Framework:** [Tool]
**Patterns:**
```typescript
[Show actual mocking pattern from codebase]
```
**What to Mock:**
- [Guidelines]
**What NOT to Mock:**
- [Guidelines]
## Fixtures and Factories
**Test Data:**
```typescript
[Show pattern from codebase]
```
**Location:**
- [Where fixtures live]
## Coverage
**Requirements:** [Target or "None enforced"]
**View Coverage:**
```bash
[command]
```
## Test Types
**Unit Tests:**
- [Scope and approach]
**Integration Tests:**
- [Scope and approach]
**E2E Tests:**
- [Framework or "Not used"]
## Common Patterns
**Async Testing:**
```typescript
[Pattern]
```
**Error Testing:**
```typescript
[Pattern]
```
---
*Testing analysis: [date]*
```
## CONCERNS.md Template (concerns focus)
```markdown
# Codebase Concerns
**Analysis Date:** [YYYY-MM-DD]
## Tech Debt
**[Area/Component]:**
- Issue: [What's the shortcut/workaround]
- Files: `[file paths]`
- Impact: [What breaks or degrades]
- Fix approach: [How to address it]
## Known Bugs
**[Bug description]:**
- Symptoms: [What happens]
- Files: `[file paths]`
- Trigger: [How to reproduce]
- Workaround: [If any]
## Security Considerations
**[Area]:**
- Risk: [What could go wrong]
- Files: `[file paths]`
- Current mitigation: [What's in place]
- Recommendations: [What should be added]
## Performance Bottlenecks
**[Slow operation]:**
- Problem: [What's slow]
- Files: `[file paths]`
- Cause: [Why it's slow]
- Improvement path: [How to speed up]
## Fragile Areas
**[Component/Module]:**
- Files: `[file paths]`
- Why fragile: [What makes it break easily]
- Safe modification: [How to change safely]
- Test coverage: [Gaps]
## Scaling Limits
**[Resource/System]:**
- Current capacity: [Numbers]
- Limit: [Where it breaks]
- Scaling path: [How to increase]
## Dependencies at Risk
**[Package]:**
- Risk: [What's wrong]
- Impact: [What breaks]
- Migration plan: [Alternative]
## Missing Critical Features
**[Feature gap]:**
- Problem: [What's missing]
- Blocks: [What can't be done]
## Test Coverage Gaps
**[Untested area]:**
- What's not tested: [Specific functionality]
- Files: `[file paths]`
- Risk: [What could break unnoticed]
- Priority: [High/Medium/Low]
---
*Concerns audit: [date]*
```
</templates>
<critical_rules>
**WRITE DOCUMENTS DIRECTLY.** Do not return findings to orchestrator. The whole point is reducing context transfer.
**ALWAYS INCLUDE FILE PATHS.** Every finding needs a file path in backticks. No exceptions.
**USE THE TEMPLATES.** Fill in the template structure. Don't invent your own format.
**BE THOROUGH.** Explore deeply. Read actual files. Don't guess.
**RETURN ONLY CONFIRMATION.** Your response should be ~10 lines max. Just confirm what was written.
**DO NOT COMMIT.** The orchestrator handles git operations.
</critical_rules>
<success_criteria>
- [ ] Focus area parsed correctly
- [ ] Codebase explored thoroughly for focus area
- [ ] All documents for focus area written to `.planning/codebase/`
- [ ] Documents follow template structure
- [ ] File paths included throughout documents
- [ ] Confirmation returned (not document contents)
</success_criteria>

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@@ -1,6 +1,6 @@
---
name: gsd:map-codebase
description: Analyze codebase with parallel Explore agents to produce .planning/codebase/ documents
description: Analyze codebase with parallel mapper agents to produce .planning/codebase/ documents
argument-hint: "[optional: specific area to map, e.g., 'api' or 'auth']"
allowed-tools:
- Read
@@ -12,22 +12,15 @@ allowed-tools:
---
<objective>
Analyze existing codebase using parallel Explore agents to produce structured codebase documents.
Analyze existing codebase using parallel gsd-codebase-mapper agents to produce structured codebase documents.
This command spawns multiple Explore agents to analyze different aspects of the codebase in parallel, each with fresh context.
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>
@~/.claude/get-shit-done/workflows/map-codebase.md
@~/.claude/get-shit-done/templates/codebase/stack.md
@~/.claude/get-shit-done/templates/codebase/architecture.md
@~/.claude/get-shit-done/templates/codebase/structure.md
@~/.claude/get-shit-done/templates/codebase/conventions.md
@~/.claude/get-shit-done/templates/codebase/testing.md
@~/.claude/get-shit-done/templates/codebase/integrations.md
@~/.claude/get-shit-done/templates/codebase/concerns.md
</execution_context>
<context>
@@ -58,26 +51,20 @@ Check for .planning/STATE.md - loads context if project already initialized
<process>
1. Check if .planning/codebase/ already exists (offer to refresh or skip)
2. Create .planning/codebase/ directory structure
3. Spawn 4 parallel Explore agents to analyze codebase:
- Agent 1: Stack + Integrations (technology focus)
- Agent 2: Architecture + Structure (organization focus)
- Agent 3: Conventions + Testing (quality focus)
- Agent 4: Concerns (issues focus)
4. Wait for all agents to complete, collect findings
5. Write 7 codebase documents using templates:
- STACK.md - Languages, frameworks, key dependencies
- ARCHITECTURE.md - System design, patterns, data flow
- STRUCTURE.md - Directory layout, module organization
- CONVENTIONS.md - Code style, naming, patterns
- TESTING.md - Test structure, coverage, practices
- INTEGRATIONS.md - APIs, databases, external services
- CONCERNS.md - Technical debt, risks, issues
6. Offer next steps (typically: /gsd:new-project or /gsd:plan-phase)
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
- [ ] All 7 codebase documents written by mapper agents
- [ ] Documents follow template structure
- [ ] Parallel agents completed without errors
- [ ] User knows next steps

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@@ -1,21 +1,23 @@
<purpose>
Orchestrate parallel Explore agents to analyze codebase and produce structured documents in .planning/codebase/
Orchestrate parallel codebase mapper agents to analyze codebase and produce structured documents in .planning/codebase/
Each agent has fresh context and focuses on specific aspects. Output is concise and actionable for planning.
Each agent has fresh context, explores a specific focus area, and **writes documents directly**. The orchestrator only receives confirmation + line counts, then writes a summary.
Output: .planning/codebase/ folder with 7 structured documents about the codebase state.
</purpose>
<philosophy>
**Why parallel agents:**
**Why dedicated mapper agents:**
- Fresh context per domain (no token contamination)
- Thorough analysis without context exhaustion
- Each agent optimized for its domain (tech vs organization vs quality vs issues)
- Agents write documents directly (no context transfer back to orchestrator)
- Orchestrator only summarizes what was created (minimal context usage)
- Faster execution (agents run simultaneously)
**Document quality over length:**
Include enough detail to be useful as reference. Prioritize practical examples (especially code patterns) over arbitrary brevity. A 200-line TESTING.md with real patterns is more valuable than a 74-line summary.
Include enough detail to be useful as reference. Prioritize practical examples (especially code patterns) over arbitrary brevity.
**Always include file paths:**
Documents are reference material for Claude when planning/executing. Vague descriptions like "UserService handles users" are not actionable. Always include actual file paths formatted with backticks: `src/services/user.ts`. This allows Claude to navigate directly to relevant code without re-searching. Do NOT include line numbers (they go stale), just file paths.
Documents are reference material for Claude when planning/executing. Always include actual file paths formatted with backticks: `src/services/user.ts`.
</philosophy>
<process>
@@ -57,286 +59,136 @@ mkdir -p .planning/codebase
```
**Expected output files:**
- STACK.md (from stack.md template)
- ARCHITECTURE.md (from architecture.md template)
- STRUCTURE.md (from structure.md template)
- CONVENTIONS.md (from conventions.md template)
- TESTING.md (from testing.md template)
- INTEGRATIONS.md (from integrations.md template)
- CONCERNS.md (from concerns.md template)
- STACK.md (from tech mapper)
- INTEGRATIONS.md (from tech mapper)
- ARCHITECTURE.md (from arch mapper)
- STRUCTURE.md (from arch mapper)
- CONVENTIONS.md (from quality mapper)
- TESTING.md (from quality mapper)
- CONCERNS.md (from concerns mapper)
Continue to spawn_agents.
</step>
<step name="spawn_agents">
Spawn 4 parallel Explore agents to analyze codebase.
Spawn 4 parallel gsd-codebase-mapper agents.
Use Task tool with `subagent_type="Explore"` and `run_in_background=true` for parallel execution.
Use Task tool with `subagent_type="gsd-codebase-mapper"` and `run_in_background=true` for parallel execution.
**Agent 1: Stack + Integrations (Technology Focus)**
**CRITICAL:** Use the dedicated `gsd-codebase-mapper` agent, NOT `Explore`. The mapper agent writes documents directly.
**Agent 1: Tech Focus**
Task tool parameters:
```
subagent_type: "Explore"
subagent_type: "gsd-codebase-mapper"
run_in_background: true
task_description: "Analyze codebase technology stack and external integrations"
description: "Map codebase tech stack"
```
Prompt:
```
Focus: tech
Analyze this codebase for technology stack and external integrations.
IMPORTANT: Always include actual file paths in your findings. Use backtick formatting like `src/config/database.ts`. This makes the output actionable for planning.
Write these documents to .planning/codebase/:
- STACK.md - Languages, runtime, frameworks, dependencies, configuration
- INTEGRATIONS.md - External APIs, databases, auth providers, webhooks
Focus areas:
1. Languages (check file extensions, package manifests)
2. Runtime environment (Node.js, Python, etc. - check .nvmrc, .python-version, engines field)
3. Package manager and lockfiles
4. Frameworks (web, testing, build tools)
5. Key dependencies (critical packages for functionality)
6. External services (APIs, databases, auth providers)
7. Third-party integrations (payment, analytics, etc.)
8. Configuration approach (.env, config files)
Search for:
- package.json / requirements.txt / Cargo.toml / go.mod
- .env files, .env.example
- Config files (vite.config, webpack.config, tsconfig.json)
- API client code, database connection code
- Import statements for major libraries
Output findings for populating these sections:
- STACK.md: Languages, Runtime, Frameworks, Dependencies, Configuration
- INTEGRATIONS.md: External APIs, Services, Third-party tools
For each finding, include the file path where you found it. Example:
- "TypeScript 5.3 - `package.json`"
- "Supabase client - `src/lib/supabase.ts`"
- "Stripe integration - `src/services/stripe.ts`, `src/webhooks/stripe.ts`"
If something is not found, note "Not detected" for that category.
Explore thoroughly. Write documents directly using templates. Return confirmation only.
```
**Agent 2: Architecture + Structure (Organization Focus)**
**Agent 2: Architecture Focus**
Task tool parameters:
```
subagent_type: "Explore"
subagent_type: "gsd-codebase-mapper"
run_in_background: true
task_description: "Analyze codebase architecture patterns and directory structure"
description: "Map codebase architecture"
```
Prompt:
```
Focus: arch
Analyze this codebase architecture and directory structure.
IMPORTANT: Always include actual file paths in your findings. Use backtick formatting like `src/index.ts`. This makes the output actionable for planning.
Write these documents to .planning/codebase/:
- ARCHITECTURE.md - Pattern, layers, data flow, abstractions, entry points
- STRUCTURE.md - Directory layout, key locations, naming conventions
Focus areas:
1. Overall architectural pattern (monolith, microservices, layered, etc.)
2. Conceptual layers (API, service, data, utility)
3. Data flow and request lifecycle
4. Key abstractions and patterns (services, controllers, repositories)
5. Entry points (main files, server files, CLI entry)
6. Directory organization and purposes
7. Module boundaries
8. Naming conventions for directories and files
Search for:
- Entry points: index.ts, main.ts, server.ts, app.ts, cli.ts
- Directory structure patterns (src/, lib/, components/, services/)
- Import patterns (what imports what)
- Recurring code patterns (base classes, interfaces, common abstractions)
Output findings for populating these sections:
- ARCHITECTURE.md: Pattern, Layers, Data Flow, Abstractions, Entry Points
- STRUCTURE.md: Directory layout, Organization, Key locations
For each finding, include the file path. Examples:
- "CLI entry point: `bin/install.js`"
- "Service layer: `src/services/*.ts` (UserService, ProjectService)"
- "API routes: `src/routes/api/*.ts`"
If something is not clear, provide best-guess interpretation based on code structure.
Explore thoroughly. Write documents directly using templates. Return confirmation only.
```
**Agent 3: Conventions + Testing (Quality Focus)**
**Agent 3: Quality Focus**
Task tool parameters:
```
subagent_type: "Explore"
subagent_type: "gsd-codebase-mapper"
run_in_background: true
task_description: "Analyze coding conventions and test patterns"
description: "Map codebase conventions"
```
Prompt:
```
Analyze this codebase for coding conventions and testing practices.
Focus: quality
IMPORTANT: Always include actual file paths in your findings. Use backtick formatting like `vitest.config.ts`. This makes the output actionable for planning.
Analyze this codebase for coding conventions and testing patterns.
Focus areas:
1. Code style (indentation, quotes, semicolons, formatting)
2. File naming conventions (kebab-case, PascalCase, etc.)
3. Function/variable naming patterns
4. Comment and documentation style
5. Test framework and structure
6. Test organization (unit, integration, e2e)
7. Test coverage approach
8. Linting and formatting tools
Write these documents to .planning/codebase/:
- CONVENTIONS.md - Code style, naming, patterns, error handling
- TESTING.md - Framework, structure, mocking, coverage
Search for:
- Config files: .eslintrc, .prettierrc, tsconfig.json
- Test files: *.test.*, *.spec.*, __tests__/
- Test setup: vitest.config, jest.config
- Code patterns across multiple files
- README or CONTRIBUTING docs
Output findings for populating these sections:
- CONVENTIONS.md: Code Style, Naming, Patterns, Documentation
- TESTING.md: Framework, Structure, Coverage, Tools
For each finding, include file paths. Examples:
- "Prettier config: `.prettierrc`"
- "Test pattern: `src/**/*.test.ts` (co-located with source)"
- "Example of naming convention: `src/services/user-service.ts`"
Look at actual code files to infer conventions if config files are missing.
Explore thoroughly. Write documents directly using templates. Return confirmation only.
```
**Agent 4: Concerns (Issues Focus)**
**Agent 4: Concerns Focus**
Task tool parameters:
```
subagent_type: "Explore"
subagent_type: "gsd-codebase-mapper"
run_in_background: true
task_description: "Identify technical debt and areas of concern"
description: "Map codebase concerns"
```
Prompt:
```
Focus: concerns
Analyze this codebase for technical debt, known issues, and areas of concern.
CRITICAL: Always include actual file paths in your findings. Use backtick formatting like `src/auth/login.ts`. Concerns without file paths are not actionable. For each issue found, specify exactly where it is.
Write this document to .planning/codebase/:
- CONCERNS.md - Tech debt, bugs, security, performance, fragile areas
Focus areas:
1. TODO and FIXME comments
2. Complex or hard-to-understand code
3. Missing error handling (try/catch, error checks)
4. Security patterns (hardcoded secrets, unsafe operations)
5. Outdated dependencies (check versions against current)
6. Missing tests for critical code
7. Duplicate code patterns
8. Performance concerns (N+1 queries, inefficient loops)
9. Documentation gaps (complex code without comments)
Search for:
- TODO, FIXME, HACK, XXX comments
- Large functions or files (>200 lines)
- Repeated code patterns
- Missing .env.example when .env is used
- Dependencies with known vulnerabilities (check versions)
- Error-prone patterns (no validation, no error handling)
Output findings for populating:
- CONCERNS.md: Technical Debt, Issues, Security, Performance, Documentation
For EVERY concern, include file paths. Examples:
- "Direct DB queries in components: `src/pages/Dashboard.tsx`, `src/pages/Profile.tsx`"
- "Missing error handling: `src/api/webhook.ts` (Stripe webhook has no try/catch)"
- "TODO: 'fix race condition' in `src/services/subscription.ts`"
Be constructive - focus on actionable concerns, not nitpicks.
If codebase is clean, note that rather than inventing problems.
Explore thoroughly. Write document directly using template. Return confirmation only.
```
Continue to collect_results.
Continue to collect_confirmations.
</step>
<step name="collect_results">
<step name="collect_confirmations">
Wait for all 4 agents to complete.
Use TaskOutput tool to collect results from each agent. Since agents were run with `run_in_background=true`, retrieve their output.
Use TaskOutput tool to collect confirmations from each agent.
**Collection pattern:**
For each agent, use TaskOutput tool to get the full exploration findings.
**Aggregate findings by document:**
From Agent 1 output, extract:
- STACK.md sections: Languages, Runtime, Frameworks, Dependencies, Configuration, Platform
- INTEGRATIONS.md sections: External APIs, Services, Authentication, Webhooks
From Agent 2 output, extract:
- ARCHITECTURE.md sections: Pattern Overview, Layers, Data Flow, Key Abstractions, Entry Points
- STRUCTURE.md sections: Directory Layout, Key Locations, Organization
From Agent 3 output, extract:
- CONVENTIONS.md sections: Code Style, Naming Conventions, Common Patterns, Documentation Style
- TESTING.md sections: Framework, Structure, Coverage, Tools
From Agent 4 output, extract:
- CONCERNS.md sections: Technical Debt, Known Issues, Security, Performance, Missing
**Handling missing findings:**
If an agent didn't find information for a section, use placeholder:
- "Not detected" (for infrastructure/tools that may not exist)
- "Not applicable" (for patterns that don't apply to this codebase)
- "No significant concerns" (for CONCERNS.md if codebase is clean)
Continue to write_documents.
</step>
<step name="write_documents">
Write all 7 codebase documents using templates and agent findings.
**Template filling process:**
For each document:
1. **Read template file** from `~/.claude/get-shit-done/templates/codebase/{name}.md`
2. **Extract the "File Template" section** - this is the markdown code block containing the actual document structure
3. **Fill template placeholders** with agent findings:
- Replace `[YYYY-MM-DD]` with current date
- Replace `[Placeholder text]` with specific findings from agents
- If agent found nothing for a section, use appropriate placeholder:
- "Not detected" for optional infrastructure
- "Not applicable" for patterns that don't fit this codebase
- "No significant concerns" for clean codebase areas
4. **Write to .planning/codebase/{NAME}.md** (uppercase filename)
**Example filling pattern:**
Template placeholder:
**Expected confirmation format from each agent:**
```
**Primary:**
- [Language] [Version] - [Where used: e.g., "all application code"]
## Mapping Complete
**Focus:** {focus}
**Documents written:**
- `.planning/codebase/{DOC1}.md` ({N} lines)
- `.planning/codebase/{DOC2}.md` ({N} lines)
Ready for orchestrator summary.
```
Agent finding:
```
Found: TypeScript 5.3 used in all .ts files throughout src/
```
**What you receive:** Just file paths and line counts. NOT document contents.
Filled result:
```
**Primary:**
- TypeScript 5.3 - All application code
```
If any agent failed, note the failure and continue with successful documents.
**Document writing order:**
1. **STACK.md** (from stack.md template + Agent 1 findings)
2. **INTEGRATIONS.md** (from integrations.md template + Agent 1 findings)
3. **ARCHITECTURE.md** (from architecture.md template + Agent 2 findings)
4. **STRUCTURE.md** (from structure.md template + Agent 2 findings)
5. **CONVENTIONS.md** (from conventions.md template + Agent 3 findings)
6. **TESTING.md** (from testing.md template + Agent 3 findings)
7. **CONCERNS.md** (from concerns.md template + Agent 4 findings)
After all documents written, continue to verify_output.
Continue to verify_output.
</step>
<step name="verify_output">
@@ -349,10 +201,9 @@ wc -l .planning/codebase/*.md
**Verification checklist:**
- All 7 documents exist
- No empty documents
- Templates populated with findings
- No empty documents (each should have >20 lines)
If any checks fail, report issues to user.
If any documents missing or empty, note which agents may have failed.
Continue to commit_codebase_map.
</step>
@@ -382,6 +233,11 @@ Continue to offer_next.
<step name="offer_next">
Present completion summary and next steps.
**Get line counts:**
```bash
wc -l .planning/codebase/*.md
```
**Output format:**
```
@@ -424,11 +280,10 @@ End workflow.
<success_criteria>
- .planning/codebase/ directory created
- 4 parallel Explore agents spawned with run_in_background=true
- Agent prompts are specific and actionable
- TaskOutput used to collect all agent results
- All 7 codebase documents written using template filling
- Documents follow template structure with actual findings
- 4 parallel gsd-codebase-mapper agents spawned with run_in_background=true
- Agents write documents directly (orchestrator doesn't receive document contents)
- TaskOutput used to collect confirmations only
- All 7 codebase documents exist
- Clear completion summary with line counts
- User offered clear next steps in GSD style
</success_criteria>