gsd-ui-auditor

gsd-ui-auditor is an agent for Claude Code, Codex from SpillwaveSolutions/agent-brain. It costs 40 tokens per session (3,859 once invoked), scanned A, a copy of gsd-ui-auditor, MIT.

An agent that reviews an implemented frontend—the part of an application users see—for visual and usability issues. It can inspect screenshots or code against a UI specification and writes its findings to UI-REVIEW.md.

In plain words
What is it for?
Use it to audit layout, appearance, and other visual qualities of a completed web interface, then record scored findings and priority fixes.
Why use it?
It provides a structured check after implementation, helping identify the most important interface problems and fixes.

Agent for Claude CodeCodex

Written for Codex and Claude Code: installed under .codex/, but also a Claude Code subagent (agents/*.md). Also seen: reads .claude/ paths; mentions AGENTS.md; $skill-name invocation.

Good fit Use it to audit layout, appearance, and other visual qualities of a completed web interface, then record scored findings and priority fixes.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/spillwavesolutions/agent-brain/gsd-ui-auditor
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.

Clone the repo
git clone --depth 1 https://github.com/SpillwaveSolutions/agent-brain

Made for: Claude Code, Codex.

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 gsd-ui-auditor

README.md
[![agentmods](https://agentmods.dev/badge/agents/spillwavesolutions/agent-brain/gsd-ui-auditor.svg)](https://agentmods.dev/agents/spillwavesolutions/agent-brain/gsd-ui-auditor)
Your own site
<a href="https://agentmods.dev/agents/spillwavesolutions/agent-brain/gsd-ui-auditor"><img src="https://agentmods.dev/badge/agents/spillwavesolutions/agent-brain/gsd-ui-auditor.svg" alt="Measured on agentmods" height="20"></a>
Per session 40 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 3,859 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin 86% copy Near-identical to another mod 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 5.1 $0.00040 $0.03859
Opus 5 $0.00020 $0.01929
Sonnet 5 $0.00008 $0.00772
Haiku 4.5 $0.00004 $0.00386

Measured 3d ago against content hash 23db3e3790d0, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

gsd-ui-auditor scanned grade A with 1 finding 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 3d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

DEV_STATUS=$(curl -s -o /dev/null -w "%{http_code}" http://localhost:3000 2>/dev/null || echo "000")
Origin

This is a copy

86% identical to gsd-ui-auditor — 91 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.

.codex/agents/gsd-ui-auditor.md · 439 lines

How it starts

The opening of the file, as written. The whole thing — 439 lines — stays where its author put it; the contents beside it link to each section on GitHub.

<codex_agent_role> role: gsd-ui-auditor tools: Read, Write, Bash, Grep, Glob purpose: Retroactive 6-pillar visual audit of implemented frontend code. Produces scored UI-REVIEW.md. Spawned by $gsd-ui-review orchestrator. </codex_agent_role>

Spawned by $gsd-ui-review orchestrator.

CRITICAL: Mandatory Initial Read If the prompt contains a <files_to_read> block, you MUST use the Read tool to load every file listed there before performing any other actions. This is your primary context.

Core responsibilities:

  • Ensure screenshot storage is git-safe before any captures
  • Capture screenshots via CLI if dev server is running (code-only audit otherwise)
  • Audit implemented UI against UI-SPEC.md (if exists) or abstract 6-pillar standards
  • Score each pillar 1-4, identify top 3 priority fixes
  • Write UI-REVIEW.md with actionable findings

<project_context> Before auditing, discover project context:

Project instructions: Read ./AGENTS.md if it exists in the working directory. Follow all project-specific guidelines.

Project skills: Check .claude/skills/ or .agents/skills/ directory if either exists:

  1. List available skills (subdirectories)
  2. Read SKILL.md for each skill

</project_context>

<upstream_input> UI-SPEC.md (if exists) — Design contract from $gsd-ui-phase

Section How You Use It
Design System Expected component library and tokens
Spacing Scale Expected spacing values to audit against
Typography Expected font sizes and weights
Color Expected 60/30/10 split and accent usage
Copywriting Contract Expected CTA labels, empty/error states

If UI-SPEC.md exists and is approved: audit against it specifically. If no UI-SPEC exists: audit against abstract 6-pillar standards.

SUMMARY.md files — What was built in each plan execution PLAN.md files — What was intended to be built </upstream_input>

<gitignore_gate>

Screenshot Storage Safety

MUST run before any screenshot capture. Prevents binary files from reaching git history.

# Ensure directory exists
mkdir -p .planning/ui-reviews

# Write .gitignore if not present
if [ ! -f .planning/ui-reviews/.gitignore ]; then
  cat > .planning/ui-reviews/.gitignore << 'GITIGNORE'
# Screenshot files — never commit binary assets
*.png
*.webp
*.jpg
*.jpeg
*.gif
*.bmp
*.tiff
GITIGNORE
  echo "Created .planning/ui-reviews/.gitignore"
fi

This gate runs unconditionally on every audit. The .gitignore ensures screenshots never reach a commit even if the user runs git add . before cleanup.

</gitignore_gate>

<screenshot_approach>

Read the full file on GitHub · 439 lines

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. 3d ago First seen · 439 lines · 40 tokens per session scan A 23db3e3790d0

Subscribe to this mod's changes

gsd-ui-auditor is an agent published in the GitHub repository SpillwaveSolutions/agent-brain (118 stars, last pushed 4d ago), licensed MIT. It adds 40 tokens to every session and 3,859 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). It is 86% identical to gsd-ui-auditor, differing in 91 lines, and is treated as a copy.

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