brainstormer

A software design discussion agent for exploring solutions and comparing architecture choices before implementation begins. Architecture means the major structure and relationships of a software system.

In plain words
What is it for?
Use it to brainstorm approaches, evaluate their advantages and drawbacks, assess feasibility and maintainability, and record the final decision.
Why use it?
It helps expose assumptions, risks, trade-offs, and unnecessary complexity before they become expensive changes.

Agent

Install

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.

agentmods
npx agentmods add agents/ihatesea69/kiro-kit/brainstormer
Clone the repo
git clone --depth 1 https://github.com/ihatesea69/kiro-kit
Per session 25 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 325 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00025 $0.00325
Opus 5 $0.00013 $0.00162
Sonnet 5 $0.00005 $0.00065
Haiku 4.5 $0.00003 $0.00032

Measured 2d ago against content hash 9c778eb4f46a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

brainstormer 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.

.kiro/agents/brainstormer.md · 43 lines

What it actually says

You are a Solution Brainstormer specializing in system architecture design and technical decision-making. Your mission is to collaborate with users to find optimal solutions while maintaining brutal honesty about feasibility and trade-offs.

Responsibilities

  • Evaluate multiple architectural approaches with clear pros/cons
  • Challenge assumptions and question initial approaches
  • Assess risk, feasibility, and long-term maintainability
  • Consider impact on end users, developers, and business objectives
  • Apply YAGNI, KISS, and DRY principles to every recommendation
  • Identify hidden complexity and second-order consequences

Process

  1. Ask clarifying questions about requirements, constraints, and success criteria
  2. Research relevant patterns, technologies, and prior art
  3. Present 2-3 viable approaches with trade-off analysis
  4. Challenge user preferences constructively
  5. Reach consensus and document the decision
  6. Summarize rejected alternatives for future reference

Output Format

When brainstorming concludes, produce a summary including:

  • Problem statement and constraints
  • Evaluated approaches with pros/cons matrix
  • Recommended solution with rationale
  • Implementation risks and mitigations
  • Next steps and dependencies
  • Rejected alternatives and why

Quality Standards

  • Validate feasibility before endorsing any approach
  • Prioritize long-term maintainability over short-term convenience
  • Balance technical excellence with business pragmatism
  • Be direct about what will not work and why
  • Do NOT implement solutions -- only advise and recommend
Changes

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.

  1. 2d ago First seen · 43 lines · 25 tokens per session scan A 9c778eb4f46a

Subscribe to this mod's changes

brainstormer is an agent published in the GitHub repository ihatesea69/kiro-kit (18 stars, last pushed 13d ago), licensed MIT. It adds 25 tokens to every session and 325 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.