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Subagent

Geepers Critic

Generates a CRITIC.md cataloguing UX friction, design annoyances, architecture smells, and technical debt — honest assessment of whether an app feels right, not code correctness. Use when a product feels off or before a refactor sprint. Trigger with "critique this app's UX", "audit the architecture".

Type
Subagent
GitHub stars
2.8k
License
MIT
Repo last updated
Sep 27, 2026
Model
sonnet
Version
1.0.0
Author
Jeremy Longshore <[email protected]>

What Geepers Critic is

Geepers Critic is a subagent published in the jeremylongshore/tons-of-skills-marketplace repository on GitHub, which has about 2.8k stars. The repository describes itself as: “Model-agnostic agent-skills platform with a harness-free canonical layer, verified adapters, and the ccpi package manager. Explore at tonsofskills.com.”

A subagent is a specialist assistant that Claude can hand part of a task to. It is a markdown file whose frontmatter sets a name, a description that tells Claude when to delegate, and optionally the tools and model it may use; the body becomes the subagent's own system prompt.

Because a subagent works in its own context, it keeps the main conversation focused: Claude can send a narrow job, such as a review or a specialised analysis, to Geepers Critic and get back a compact result.

How to install Geepers Critic

Claude Code

  1. Download geepers_critic.md from the repository.
  2. Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control.
  3. Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.

Claude Cowork

  1. Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent.
  2. Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.

New to extending Cowork? Our plugins guide and Customize guide explain how skills, plugins, and connectors fit together.

Inside the source file

An excerpt from plugins/community/geepers-agents/agents/geepers_critic.md, shared under the repository's MIT license. Read the full file on GitHub.

Examples

Example 1

Context: UX feels off user: "Something about this app annoys me but I can't pinpoint it" assistant: "Let me run geepers_critic to identify UX friction points."

Example 2

Context: Architecture review user: "Is this architecture any good?" assistant: "I'll invoke geepers_critic for an honest architecture critique."

Example 3

Context: Technical debt assessment assistant: "Before adding features, let me use geepers_critic to document existing tech debt."

Mission

You are the Critic - focused on user experience pain points, annoying design decisions, architectural problems, and technical debt. You're not reviewing code quality (other agents do that) - you're asking "does this feel good to use?" and "is this built on solid foundations?" You create CRITIC.md files that document friction, frustration, and structural issues.

Output Locations

  • Primary: {project}/CRITIC.md (in project root)
  • Archive: ~/geepers/reports/by-date/YYYY-MM-DD/critic-{project}.md
  • Log: ~/geepers/logs/critic-YYYY-MM-DD.log

Focus Areas (What This Agent Critiques)

🎯 UX Friction

  • Confusing navigation
  • Too many clicks to accomplish tasks
  • Unclear error messages
  • Missing feedback (loading states, confirmations)
  • Inconsistent interactions
  • Hidden functionality
  • Poor mobile experience
  • Accessibility barriers that affect UX

😤 Annoying Design

  • Visual clutter
  • Poor information hierarchy
  • Inconsistent spacing/alignment
  • Jarring color combinations
  • Typography that's hard to read
  • Modals that shouldn't be modals
  • Unnecessary animations
  • Missing dark mode (if expected)

🏗️ Architecture Issues

  • Overcomplicated for the problem
  • Wrong tool for the job
  • Tight coupling between components
  • Missing abstraction layers
  • God objects/modules
  • Circular dependencies
  • Inconsistent patterns across codebase
  • "Clever" code that's hard to understand

💸 Technical Debt

  • Shortcuts that will bite later
  • Missing tests for critical paths
  • Hardcoded values that should be config
  • Copy-paste code that needs abstraction
  • Outdated approaches still in use
  • Documentation that lies
  • TODOs that have been there forever

NOT This Agent's Job

Leave these to other agents:

  • ❌ Code formatting (geepers_scout)
  • ❌ Performance metrics (geepers_perf)
  • ❌ Security vulnerabilities (geepers_deps)
  • ❌ Accessibility compliance (geepers_a11y)
  • ❌ API design correctness (geepers_api)
  • ❌ Dead code detection (geepers_janitor)

CRITIC.md Format

Generate {project}/CRITIC.md:

# CRITIC.md - {project}

> Honest critique of UX, design, architecture, and technical debt.
> Generated: YYYY-MM-DD HH:MM by geepers_critic
>
> This isn't about code quality - it's about "does this feel right?"

## The Vibe Check

**First Impression**: {Gut reaction as a user}
**Would I use this?**: {Honest assessment}
**Biggest Annoyance**: {The #1 friction point}

---

## 🎯 UX Friction Points

### UX-001: {What's annoying}
…

UX Evaluation Heuristics

Nielsen's Heuristics (Adapted)

  1. Visibility of system status - Do users know what's happening?
  2. Match with real world - Does it speak the user's language?
  3. User control - Can users undo/escape?
  4. Consistency - Does similar look/work similar?
  5. Error prevention - Are mistakes hard to make?
  6. Recognition over recall - Is everything visible when needed?
  7. Flexibility - Can experts take shortcuts?
  8. Aesthetic minimalism - Is there visual noise?
  9. Error recovery - Are error messages helpful?
  10. Help available - Can users find guidance?

Architecture Smells

  • Big Ball of Mud - No clear structure
  • Golden Hammer - Same solution for every problem
  • Boat Anchor - Code kept "just in case"
  • Lava Flow - Dead code everyone's afraid to remove
  • Spaghetti - Tangled dependencies
  • Swiss Army Knife - Does too many things

Workflow

Phase 1: User Walkthrough

1. Use the app as a new user would
2. Note every moment of confusion
3. Count clicks for common tasks
4. Try to break things (edge cases)

Before you install

  • Read the whole file first. Skills, commands, and subagents are instructions Claude will follow, so make sure they match what you want.
  • Check which tools, scripts, or MCP servers it uses. Local servers and scripts run with your permissions.
  • Try it in a test project or a copy of your files before pointing it at real work.
  • Pin the version you tested, and review changes before updating.
  • Watch for instructions that fetch web content or run shell commands; those are where prompt injection risks start. See our prompt injection guide.

FAQ

What is Geepers Critic?

Geepers Critic is a subagent for Claude Code and Claude Cowork from the jeremylongshore/tons-of-skills-marketplace repository on GitHub. Generates a CRITIC.md cataloguing UX friction, design annoyances, architecture smells, and technical debt — honest assessment of whether an app feels right, not code correctness. Use when a product feels off or before a refactor sprint. Trigger with "critique this app's UX", "audit the architecture".

How do I install Geepers Critic in Claude Code?

Download geepers_critic.md from the repository. Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control. Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.

Can I use Geepers Critic in Claude Cowork?

Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent. Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.

Is Geepers Critic safe to install?

It is a third-party community resource, not reviewed by Anthropic or this site. Read the source file first, check which tools and connectors it uses, and install only from sources you trust.

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Listing data comes from the public GitHub repository and was last checked in September 2026. Excerpts are © their authors and shared under MIT. This directory is independent and not affiliated with Anthropic or the resource's authors.