This skill is self-contained — follow the steps below instead of delegating to external planning skills (superpowers, etc.).
Research the codebase and create a spec + phased implementation plan. Zero interactive questions — explores the code instead.
Creates a track for any feature, bug fix, or refactor with a concrete, file-level implementation plan. Works with or without /setup.
If MCP tools are not available, fall back to Glob + Grep + Read.
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Parse task description from $ARGUMENTS.
- If empty, ask via AskUserQuestion: "What feature, bug, or refactor do you want to plan?"
- This is the ONE question maximum.
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Detect context — determine where plan files should be stored:
Project context (normal project with code):
- Detected by:
package.json, pyproject.toml, Cargo.toml, *.xcodeproj, or build.gradle.kts exists in working directory
- Plan path:
docs/plan/{trackId}/
Knowledge base context (documentation-centric project):
- Detected by: NO package manifest found, BUT directories like
docs/, notes/, or structured numbered directories exist
- Plan path:
docs/plan/{shortname}/
- Note: the shortname is derived from the task (kebab-case, no date suffix for the directory)
Set $PLAN_ROOT based on detected context. All subsequent file paths use $PLAN_ROOT.
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Load project context (parallel reads):
CLAUDE.md — architecture, constraints, Do/Don't
docs/prd.md — what the product does (if exists)
docs/workflow.md — TDD policy, commit strategy (if exists)
package.json or pyproject.toml — stack, versions, deps
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Auto-classify track type from keywords in task description:
- Contains "fix", "bug", "broken", "error", "crash" →
bug
- Contains "refactor", "cleanup", "reorganize", "migrate" →
refactor
- Contains "update", "upgrade", "bump" →
chore
- Default →
feature
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Research phase — explore the codebase to understand what needs to change:
a. Get architecture overview (if MCP available — do this FIRST):
codegraph_explain(project="{project name from CLAUDE.md or directory name}")
Gives you: stack, languages, directory layers, key patterns, top dependencies, hub files.
b. Get RepoMap (if MCP available):
codegraph_repomap(project="{project name from CLAUDE.md or directory name}")
Gives you a YAML map of the most important files and their exported symbols (classes/functions).
c. Find relevant files — Glob + Grep for patterns related to the task:
- Search for keywords from the task description
- Look at directory structure to understand architecture
- Identify files that will need modification
d. Precedent retrieval (context graph pattern — search past solutions BEFORE planning):
e. Search code across projects (if MCP available):
project_code_search(query="{relevant pattern}")
f. Check dependencies of affected files (if MCP available):
codegraph_query(query="MATCH (f:File {path: '{file}'})-[:IMPORTS]->(dep) RETURN dep.path")
g. Read existing tests in the affected area — understand testing patterns used.
h. Read CLAUDE.md architecture constraints — understand boundaries and conventions.
- Check for harness section: module boundaries, data validation rules, lint configs.
- Read
docs/ARCHITECTURE.md and docs/QUALITY_SCORE.md if they exist.
i. Detect deploy infrastructure — search for deploy scripts/configs to include deploy phase in plan:
find . -maxdepth 3 \( -name 'deploy.sh' -o -name 'Dockerfile' -o -name 'docker-compose.yml' -o -name 'wrangler.toml' -o -name 'sst.config.ts' \) -type f 2>/dev/null
If found, read them to understand deploy targets. Include a deploy phase in the plan with concrete commands.
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Detect overlapping plans — before creating a new track, check for existing plans that cover similar scope:
ls docs/plan/*/plan.md docs/plan/*/spec.md 2>/dev/null
For each existing plan found:
- Read its
spec.md Summary and Acceptance Criteria
- Compare scope with the new task description
- Check if tasks overlap (>50% of files or acceptance criteria in common)
If overlap detected:
- If existing plan is incomplete (
[ ] tasks remain): recommend extending it instead of creating a new track. Show the user: "Existing track {trackId} covers similar scope ({overlap description}). Extend it or create a separate track?"
- If existing plan is complete (
[x] all tasks): proceed with new track but reference the prior track in spec.md Dependencies
- If multiple existing plans overlap with each other: recommend consolidating them into one track before proceeding
If no overlap: proceed normally.
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Generate track ID:
- Extract a short name (2-3 words, kebab-case) from task description.
- Format:
{shortname}_{YYYYMMDD} (e.g., user-auth_20260209).
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Create track directory:
mkdir -p $PLAN_ROOT
- Project context:
docs/plan/{trackId}/
- KB context:
docs/plan/{shortname}/
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Generate $PLAN_ROOT/spec.md:
Based on research findings, NOT generic questions.
# Specification: {Title}
**Track ID:** {trackId}
**Type:** {Feature|Bug|Refactor|Chore}
**Created:** {YYYY-MM-DD}
**Status:** Draft
## Summary
{1-2 paragraph description based on research}
## Acceptance Criteria
- [ ] {concrete, testable criterion}
- [ ] {concrete, testable criterion}
{3-8 criteria based on research findings}
## Dependencies
- {external deps, packages, other tracks}
## Out of Scope
- {what this track does NOT cover}
## Technical Notes
- {architecture decisions from research}
- {relevant patterns found in codebase}
- {reusable code from other projects}
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Generate $PLAN_ROOT/plan.md:
Concrete, file-level plan from research. Keep it tight: 2-4 phases, 5-15 tasks total.
Critical format rules (parsed by /build):
- Phase headers:
## Phase N: Name
- Tasks:
- [ ] Task N.Y: Description (with period or detailed text)
- Subtasks: indented
- [ ] Subtask description
- All tasks use
[ ] (unchecked), [~] (in progress), [x] (done)
# Implementation Plan: {Title}
**Track ID:** {trackId}
**Spec:** [spec.md](./spec.md)
**Created:** {YYYY-MM-DD}
**Status:** [ ] Not Started
## Overview
{1-2 sentences on approach}
## Phase 1: {Name}
{brief description of phase goal}
### Tasks
- [ ] Task 1.1: {description with concrete file paths}
- [ ] Task 1.2: {description}
### Verification
- [ ] {what to check after this phase}
## Phase 2: {Name}
### Tasks
- [ ] Task 2.1: {description}
- [ ] Task 2.2: {description}
### Verification
- [ ] {verification steps}
{2-4 phases total}
## Phase {N-1}: Deploy (if deploy infrastructure exists)
_Include this phase ONLY if the project has deploy scripts/configs (deploy.sh, Dockerfile, docker-compose.yml, wrangler.toml, sst.config.ts, vercel.json). Skip if no deploy infra found._
### Tasks
- [ ] Task {N-1}.1: {concrete deploy step — e.g. "Run python/deploy.sh to push Docker image to VPS", "wrangler deploy", etc.}
- [ ] Task {N-1}.2: Verify deployment — health check, logs, HTTP status
### Verification
- [ ] Service is live and healthy
- [ ] No runtime errors in production logs
## Phase {N}: Docs & Cleanup
### Tasks
- [ ] Task {N}.1: Update CLAUDE.md with any new commands, architecture changes, or key files
- [ ] Task {N}.2: Update README.md if public API or setup steps changed
- [ ] Task {N}.3: Remove dead code — unused imports, orphaned files, stale exports
### Verification
- [ ] CLAUDE.md reflects current project state
- [ ] Linter clean, tests pass
## Final Verification
- [ ] All acceptance criteria from spec met
- [ ] Tests pass
- [ ] Linter clean
- [ ] Build succeeds
- [ ] Documentation up to date
## Context Handoff
_Summary for /build to load at session start — keeps context compact._
### Session Intent
{1 sentence: what this track accomplishes}
### Key Files
{list of files that will be modified, from research}
### Decisions Made
{key architecture decisions from research phase — why X over Y}
### Risks
{known risks or edge cases discovered during research}
---
_Generated by /plan. Tasks marked [~] in progress and [x] complete by /build._
Plan quality rules:
- Every task mentions specific file paths (from research).
- Tasks are atomic — one commit each.
- Phases are independently verifiable.
- Total: 5-15 tasks (not 70).
- Last phase is always "Docs & Cleanup".
- Criteria-task coverage: every acceptance criterion in spec.md MUST map to at least one task in plan.md. After generating both files, cross-check: list each criterion and verify a task addresses it. If a criterion has no corresponding task — add one. Uncovered criteria are the #1 cause of "plan complete but spec not met" failures.
- Harness-aware: if the task introduces new patterns, include a task to update lint rules or CLAUDE.md constraints. If it touches module boundaries, include verification of dependency direction. Think: "what harness change prevents future agents from breaking this?"
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Create progress task list for pipeline visibility: