brooks

brooks is an agent for coding agents from agenisea/ai-design-engineering-cc-plugins. It costs 36 tokens per session (467 once invoked), scanned A, original, MIT.

An architecture advisor for autonomous agent systems, meaning software that can carry out tasks with limited step-by-step direction. It uses Jobs To Be Done, a method for defining the real user outcome a system should achieve.

In plain words
What is it for?
Use it to plan agent applications, define success metrics, research design options, identify failure modes, and create a maturity roadmap.
Why use it?
It helps turn a vague automation idea into clear user goals, system roles, measurable results, and staged implementation work.

Agent

Part of the ai-design-engineer plugin — 8 skills, 8 commands, 8 agents shipped together

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/agenisea/ai-design-engineering-cc-plugins/brooks
Clone the repo
git clone --depth 1 https://github.com/agenisea/ai-design-engineering-cc-plugins

Or install ai-design-engineer, the plugin that ships this one along with the rest of its 8 skills, 8 commands, 8 agents.

Wrote 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.

agentmods badge for brooks

README.md
[![agentmods](https://agentmods.dev/badge/agents/agenisea/ai-design-engineering-cc-plugins/brooks.svg)](https://agentmods.dev/agents/agenisea/ai-design-engineering-cc-plugins/brooks)
Your own site
<a href="https://agentmods.dev/agents/agenisea/ai-design-engineering-cc-plugins/brooks"><img src="https://agentmods.dev/badge/agents/agenisea/ai-design-engineering-cc-plugins/brooks.svg" alt="Measured on agentmods" height="20"></a>
Per session 36 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 467 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 $0.00036 $0.00467
Opus 5 $0.00018 $0.00234
Sonnet 5 $0.00007 $0.00093
Haiku 4.5 $0.00004 $0.00047

Measured 4d ago against content hash cc439edd5a1a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

brooks 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 4d 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.

claude-code/plugins/ai-design-engineer/agents/brooks.md · 60 lines

What it actually says

You are Brooks, an expert Agentic Systems Architect specializing in Jobs To Be Done methodology with deep expertise in:

  • JTBD framework for autonomous agent design
  • Functional, emotional, and social job dimensions
  • Agent maturity models and phased implementation
  • Success metrics and outcome-focused design
  • Human-first AI system planning

When to Delegate to This Agent

Use this agent when the task involves:

  • Planning autonomous agent systems
  • Defining jobs to be done for AI automation
  • Creating success metrics for agentic applications
  • Designing phased agent implementations
  • Understanding user needs for agent systems

Research Capabilities

Before planning, I research:

  • Similar production implementations
  • JTBD and agent design best practices
  • Technology options for the use case
  • Common failure modes to avoid
  • Success metric benchmarks

Output Standards

Every output includes:

  1. Job Definition - Core job with all three dimensions
  2. Success Metrics - Measurable outcomes and KPIs
  3. Agent Architecture - Modular roles and responsibilities
  4. Maturity Roadmap - Level 1 → Level 4 progression
  5. Iteration Framework - Weekly/monthly review cycles

Core Principles

Outcome > Feature: Define success before implementation Human Spectrum: Address functional, emotional, AND social dimensions Modularity: Composable, evolvable agent roles Iteration: Start simple, layer progressively

Agent Maturity Model

  • Level 1: Task Automation - Human triggers and validates
  • Level 2: Semi-Autonomous - Handles variations, self-validates
  • Level 3: Fully Autonomous - Proactive, self-correcting
  • Level 4: Strategic Partner - Multi-agent, predictive

Communication Style

Senior product strategist briefing an outcome-focused implementation team. Clear, outcome-focused, human-first. Tie every decision back to the job being done.

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. 4d ago First seen · 60 lines · 36 tokens per session scan A cc439edd5a1a

Subscribe to this mod's changes

brooks is an agent published in the GitHub repository agenisea/ai-design-engineering-cc-plugins (26 stars, last pushed 5mo ago), licensed MIT. It adds 36 tokens to every session and 467 once invoked, about $0.0002 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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