Hal-9000 magi
Use when brainstorming ideas, features, or directions for a project where independent perspectives from different model families (Claude/Codex/Gemini) would surface blind spots and spark creative options the user hasn't considered — especially "what cool things can I add", "what should I build next", "give me ideas for X"
git clone https://github.com/vinta/hal-9000
T=$(mktemp -d) && git clone --depth=1 https://github.com/vinta/hal-9000 "$T" && mkdir -p ~/.claude/skills && cp -r "$T/plugins/hal-skills/skills/magi" ~/.claude/skills/vinta-hal-9000-magi && rm -rf "$T"
plugins/hal-skills/skills/magi/SKILL.mdMAGI
Multi-model brainstorming panel. Three teammates explore a question in parallel, each backed by a different model family, then the lead consolidates their proposals for the user.
- Scientist: reasons directly as Claude Opus (no external dispatch)
- Mother: delegates to OpenAI Codex via
MCP toolmcp__codex__codex - Woman: delegates to Google Gemini via
CLIgemini
Process
1. Clarify
If the question is underspecified, use
AskUserQuestion to nail down purpose, constraints, and success criteria. Skip if already clear and actionable.
- Ask questions one at a time to refine the idea
- Prefer multiple choice questions when possible, but open-ended is fine too
- Only one question per message
2. Setup
Read the personality and reference files, then spawn all teammates in parallel.
Files to read:
Create team with
TeamCreate using name magi-{topic} (e.g., magi-auth-strategy).
Spawn all 3 teammates in a single message (3 parallel
Agent calls with team_name set):
| Teammate | | | Prompt includes |
|---|---|---|---|
| Scientist | | | MAGI-1.md personality + question (reasons directly as Opus) |
| Mother | | | MAGI-2.md personality + codex.md (dispatches to Codex MCP) + question |
| Woman | | | MAGI-3.md personality + gemini.md (dispatches to Gemini CLI) + question |
Include all clarified context in each spawn prompt: teammates have no conversation history.
3. Parallel Exploration
The lead's role is coordination only:
- Wait for teammates to send proposals via
SendMessage - Forward any teammate clarifying questions to the user via
, noting which teammate (and model) asked. Never answer on the user's behalf: only the user answers.AskUserQuestion
4. Consolidate + Present
Collect all proposals, then:
- Deduplicate similar proposals (attribute to all teammates/models that proposed it)
- Group by theme if many proposals
- Present each option with:
- Which teammate(s) and model(s) proposed it (e.g., "Scientist [Opus]", "Mother [Codex]")
- Trade-off analysis from each perspective
- Who tagged it as their top pick and why
- Ask the user to select an option via
AskUserQuestion - Ask via
what to do next:AskUserQuestion- Write a plan: teardown, then handoff to
writing-plans - Debate: another round of critique (see below)
- Done: teardown, no further action
- Write a plan: teardown, then handoff to
5. Debate (optional, user-triggered)
Only runs if the user requests it. Can be repeated.
- Broadcast the consolidated option list to all 3 teammates via
SendMessage - Each teammate critiques the proposals through their model (Scientist reasons directly; Mother and Woman follow Debate Mode in their reference files)
- Collect updated stances and re-present to the user (back to step 4)
6. Teardown
Tear down only when the user selects Write a plan or Done.
to each teammateshutdown_request- Wait for all shutdown approvals
TeamDelete
7. Handoff (write a plan path only)
After teardown, invoke
writing-plans skill with the chosen option(s) as context.
Gotchas
- Teammates have no conversation history. Everything they need must be in the spawn prompt — the user's question, clarified context, CLAUDE.md, and their personality/reference files. If you forget context from the Clarify step, the teammate works blind.
fails if teammates are still active. Always sendTeamDelete
to all three and wait for approvals before callingshutdown_request
.TeamDelete- Save the Codex
. Mother's firstthreadId
call returns amcp__codex__codex
needed for debate follow-ups viathreadId
. If lost, the debate round must re-send full context.mcp__codex__codex-reply - Gemini has no persistent thread. Unlike Codex, each Gemini call is stateless. For debate rounds, the full proposal list and persona must be re-sent every time.
- Teammates may not report back. If a teammate goes silent, send a
nudge. After 2 minutes of silence, collect what you have and present partial results.SendMessage