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 skills add ashaykubal/essential-agents-skills --skill brainstormgit clone --depth 1 https://github.com/ashaykubal/essential-agents-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/ashaykubal/essential-agents-skills/brainstorm)<a href="https://agentmods.dev/skills/ashaykubal/essential-agents-skills/brainstorm"><img src="https://agentmods.dev/badge/skills/ashaykubal/essential-agents-skills/brainstorm/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/ashaykubal/essential-agents-skills/brainstorm"><img src="https://agentmods.dev/badge/skills/ashaykubal/essential-agents-skills/brainstorm.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What 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 5.1 | $0.00046 | $0.07032 |
| Opus 5 | $0.00023 | $0.03516 |
| Sonnet 5 | $0.00009 | $0.01406 |
| Haiku 4.5 | $0.00005 | $0.00703 |
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 12d 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.
This is a copy
97% identical to bulwark-brainstorm — 1,137 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 564 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Brainstorm
Role-based brainstorming on a given topic with two execution modes:
--scoped(default): Sequential Task tool pipeline — Project SME first, 3 role agents in parallel, Critical Analyst last. Best when the problem statement is well understood and you need focused implementation brainstorming.--exploratory: Agent Teams peer debate — Project SME first, then 3 AT teammates (Product & Delivery Lead, Architect, Critical Analyst) debating collaboratively. Best when validating whether an idea has merit and the problem framing is uncertain.
Both modes synthesize into a single brainstorm document with actionable recommendations.
Invocation arguments: $ARGUMENTS
When to Use This Skill
Load this skill when the user request matches ANY of these patterns:
| Trigger Pattern | Example User Request |
|---|---|
| Implementation evaluation | "Should we build X?", "Evaluate this approach" |
| Feasibility assessment | "Is this feasible?", "How would we implement X?" |
| Architecture brainstorm | "Design the approach for X", "How should X fit into our system?" |
| Post-research planning | "We've researched X, now plan the implementation" |
| Role-based analysis | "Get PM/architect/dev perspectives on X" |
DO NOT use for:
- Initial topic research (use
researchfirst) - Quick technical questions (ask directly)
- Code review (use
code-review) - Debugging (use
issue-debugging)
Dependencies
| Category | Files | Requirement | When to Load |
|---|---|---|---|
| Role definitions | references/role-*.md |
REQUIRED | Load each before spawning its agent |
| Role output template | templates/role-output.md |
REQUIRED | Include in PM, Architect, Dev Lead prompts |
| Critic output template | templates/critic-output.md |
REQUIRED | Include in Critical Analyst prompt |
| Synthesis template | templates/synthesis-output.md |
REQUIRED | Use when writing synthesis |
| Subagent prompting | subagent-prompting skill |
REQUIRED | Load at Stage 1 for 4-part prompt template |
| AT teammate prompts | references/at-teammate-prompts.md |
REQUIRED (--exploratory only) | Load at Stage 3B for AT prompt structure |
| Research synthesis | --research <file> |
OPTIONAL | If provided, include in all agent prompts |
What ships with it
11 files 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.
- references/at-teammate-prompts.md 3.3 KB
- references/role-critical-analyst.md 3.5 KB
- references/role-development-lead.md 2.8 KB
- references/role-product-delivery-lead.md 3.7 KB
- references/role-product-manager.md 2.4 KB
- references/role-project-sme.md 2.4 KB
- references/role-technical-architect.md 2.7 KB
- templates/critic-output.md 1.2 KB
- templates/diagnostic-output.yaml 3.1 KB
- templates/role-output.md 563 B
- templates/synthesis-output.md 2.0 KB
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.
- 12d ago First seen · 564 lines · 46 tokens per session scan A cea3a5b938d8
brainstorm is a skill published in the GitHub repository ashaykubal/essential-agents-skills (2 stars, last pushed 1mo ago), licensed MIT. It adds 46 tokens to every session and 7,032 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 97% identical to bulwark-brainstorm, differing in 1,137 lines, and is treated as a copy.
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