Brainstorm a Feature or Improvement

Note: The current year is 2026. Use this when dating brainstorm documents.

Brainstorming helps answer WHAT to build through collaborative dialogue. It precedes /ce:plan, which answers HOW to build it.

Process knowledge: Load the brainstorming skill for detailed question techniques, approach exploration patterns, and YAGNI principles.

Feature Description

<feature_description> #$ARGUMENTS </feature_description>

If the feature description above is empty, ask the user: "What would you like to explore? Please describe the feature, problem, or improvement you're thinking about."

Do not proceed until you have a feature description from the user.

Execution Flow

Phase 0: Assess Requirements Clarity

Evaluate whether brainstorming is needed based on the feature description.

Clear requirements indicators:

• Specific acceptance criteria provided
• Referenced existing patterns to follow
• Described exact expected behavior
• Constrained, well-defined scope

If requirements are already clear: Use AskUserQuestion tool to suggest: "Your requirements seem detailed enough to proceed directly to planning. Should I run /ce:plan instead, or would you like to explore the idea further?"

Phase 1: Understand the Idea

1.1 Repository Research (Lightweight)

Run a quick repo scan to understand existing patterns:

• Task compound-engineering:research:repo-research-analyst("Understand existing patterns related to: <feature_description>")

Focus on: similar features, established patterns, CLAUDE.md guidance.

1.2 Collaborative Dialogue

Use the AskUserQuestion tool to ask questions one at a time.

Guidelines (see brainstorming skill for detailed techniques):

• Prefer multiple choice when natural options exist
• Start broad (purpose, users) then narrow (constraints, edge cases)
• Validate assumptions explicitly
• Ask about success criteria

Exit condition: Continue until the idea is clear OR user says "proceed"

Phase 2: Explore Approaches

Propose 2-3 concrete approaches based on research and conversation.

For each approach, provide:

• Brief description (2-3 sentences)
• Pros and cons
• When it's best suited

Lead with your recommendation and explain why. Apply YAGNI—prefer simpler solutions.

Use AskUserQuestion tool to ask which approach the user prefers.

Phase 3: Capture the Design

Write a brainstorm document to docs/brainstorms/YYYY-MM-DD-<topic>-brainstorm.md.

Document structure: See the brainstorming skill for the template format. Key sections: What We're Building, Why This Approach, Key Decisions, Open Questions.

Ensure docs/brainstorms/ directory exists before writing.

IMPORTANT: Before proceeding to Phase 4, check if there are any Open Questions listed in the brainstorm document. If there are open questions, YOU MUST ask the user about each one using AskUserQuestion before offering to proceed to planning. Move resolved questions to a "Resolved Questions" section.

Phase 4: Handoff

Use AskUserQuestion tool to present next steps:

Question: "Brainstorm captured. What would you like to do next?"

Options:

1. Review and refine - Improve the document through structured self-review
2. Proceed to planning - Run /ce:plan (will auto-detect this brainstorm)
3. Share to Proof - Upload to Proof for collaborative review and sharing
4. Ask more questions - I have more questions to clarify before moving on
5. Done for now - Return later

If user selects "Share to Proof":

CONTENT=$(cat docs/brainstorms/YYYY-MM-DD-<topic>-brainstorm.md)
TITLE="Brainstorm: <topic title>"
RESPONSE=$(curl -s -X POST https://www.proofeditor.ai/share/markdown \
  -H "Content-Type: application/json" \
  -d "$(jq -n --arg title "$TITLE" --arg markdown "$CONTENT" --arg by "ai:compound" '{title: $title, markdown: $markdown, by: $by}')")
PROOF_URL=$(echo "$RESPONSE" | jq -r '.tokenUrl')

Display the URL prominently: View & collaborate in Proof: <PROOF_URL>

If the curl fails, skip silently. Then return to the Phase 4 options.

If user selects "Ask more questions": YOU (Claude) return to Phase 1.2 (Collaborative Dialogue) and continue asking the USER questions one at a time to further refine the design. The user wants YOU to probe deeper - ask about edge cases, constraints, preferences, or areas not yet explored. Continue until the user is satisfied, then return to Phase 4.

If user selects "Review and refine":

Load the document-review skill and apply it to the brainstorm document.

When document-review returns "Review complete", present next steps:

1. Move to planning - Continue to /ce:plan with this document
2. Done for now - Brainstorming complete. To start planning later: /ce:plan [document-path]

Output Summary

When complete, display:

Brainstorm complete!

Document: docs/brainstorms/YYYY-MM-DD-<topic>-brainstorm.md

Key decisions:
- [Decision 1]
- [Decision 2]

Next: Run `/ce:plan` when ready to implement.

Important Guidelines

• Stay focused on WHAT, not HOW - Implementation details belong in the plan
• Ask one question at a time - Don't overwhelm
• Apply YAGNI - Prefer simpler approaches
• Keep outputs concise - 200-300 words per section max

NEVER CODE! Just explore and document decisions.