Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/pillip/claude-dev-kit/brainstormnpx skills add pillip/claude-dev-kit --skill brainstormgit clone --depth 1 https://github.com/pillip/claude-dev-kitWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00023 | $0.01503 |
| Opus 5 | $0.00012 | $0.00751 |
| Sonnet 5 | $0.00005 | $0.00301 |
| Haiku 4.5 | $0.00002 | $0.00150 |
Grade A, and why
brainstorm scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 83 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Kit Preamble — brainstorm
Kit Script Root
Kit root: ${CLAUDE_PLUGIN_ROOT}
- Absolute path above → plugin install (substituted at load time; no project
scripts/dir): prefix every kit script command with it, e.g.bash <kit-root>/scripts/checkpoint.sh …. Absolute paths also work from worktrees. - Literal
${…}placeholder above → standalone layout: run commands as written.
Project Context Detection
Run these checks silently at the start. Use results to adapt behavior:
[ -f issues.md ]— if true, this project uses the sprint system. Respect issue numbering and STATUS.md.[ -f docs/sprint_state.md ]— if true and Status showsrunning, a sprint is active. Be aware of parallel work in worktrees.[ -f docs/prd_digest.md ]— if true, read it for quick project context before starting.
Kit Rules
- Verify
gh auth statusbefore any GitHub operation. Steps:
- Determine the output path ($ARGUMENTS or
docs/brainstorm_notes.md). - Check if the file already exists at that path.
If the file does NOT exist (New Session):
3a) Ask the user to freely describe their idea, problem, or direction — anything goes.
4a) Discovery phase: Explore the problem space with Socratic questions:
- Who has this problem? Why does it matter?
- What does success look like? What constraints exist?
Ask 1–2 questions at a time. Do not overwhelm. Discovery is conversational and not research-grounded — keep it light.
5a) Existing Landscape research (only this section is research-grounded; per SPEC-018 platform-first delegation):
- Probe runtime: python3 scripts/has_skill.py deep-research
- Exit 0 OR 2 → primary path: invoke /deep-research with a scoped question about competing solutions / existing tools / market landscape for the user's problem. Pass the report through python3 scripts/synthesize_from_deep_research.py --mode brainstorm to render the Existing Landscape section. Then run the synthesizer-auditor: invoke Task with subagent_type: synthesizer-auditor, inputs = (rendered Existing Landscape draft, /deep-research report). Block save on claim_dropped / claim_distorted / evidence_distorted / scope_change findings.
- Exit 1 → degraded path: ask the user for 1–3 source URLs about existing solutions. For each URL: python3 scripts/capture_source.py <url>. Construct each landscape claim per templates/research_claim.md. Validate every claim with python3 scripts/validate_research_claim.py --claim-file <claim>.json; block save on non-ok verdicts. Run Task with subagent_type: research-auditor, inputs = (draft, docs/references/research/). Block save on context_contradicts / scope_change findings.
- No source available on either path → render the section as the literal line Data: not available — re-run /deep-research with a sharper question or accept "no data". Never paraphrase to fill in.
6a) Ideation phase: Once the problem is clear, propose 2–3 solution directions with brief pros/cons for each. Help the user narrow down. This step is authored opinion, not research-grounded.
7a) Synthesize findings into the brainstorm notes format (Problem Space, Existing Landscape, Idea Candidates, Decisions).
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2d ago First seen · 83 lines · 23 tokens per session scan A e5afb12a4f65
brainstorm is a skill published in the GitHub repository pillip/claude-dev-kit (11 stars, last pushed 16d ago), licensed MIT. It adds 23 tokens to every session and 1,503 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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