agentmods.dev

ui-test

An automated way to test a web interface by using a command-line browsing tool. It checks behavior, accessibility, mobile and desktop layouts, and common usability problems.

In plain words
What is it for?
Testing pull requests and UI changes, checking accessibility, and finding functional, responsive-layout, or user-experience issues.
Why use it?
It helps find bugs in changed code or across an entire app without relying only on manual checks.

Skill for Claude CodeCodex

3.7k +2 today A scan 87 tokens no licence
View the source file browserbase/skills
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 skills/browserbase/skills/ui-test
Any agent
npx skills add browserbase/skills --skill ui-test
Clone the repo
git clone --depth 1 https://github.com/browserbase/skills

Made for: Claude Code, Codex.

Per session 87 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 6,972 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 2 findings. Scan, not verified.
Origin unknown 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 $0.00087 $0.06972
Opus 5 $0.00044 $0.03486
Sonnet 5 $0.00017 $0.01394
Haiku 4.5 $0.00009 $0.00697

Measured 2d ago against content hash a47b912bb9dc, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

ui-test scanned grade A with 2 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.

Reads agent configuration directorieslowAgent snooping

.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.

Add both patterns to `.claude/settings.json` (project-level) or `~/.claude/settings.json` (user-level):

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Makes network callslowCapability

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

s=$(curl -s -o /dev/null -w "%{http_code}" "http://localhost:$port" 2>/dev/null)
skills/ui-test/SKILL.md · 605 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

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.

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 · 605 lines · 87 tokens per session scan A a47b912bb9dc

Subscribe to this mod's changes

ui-test is a skill published in the GitHub repository browserbase/skills (3,706 stars, last pushed today), with no licence file. It adds 87 tokens to every session and 6,972 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 2 findings (reads agent configuration directories, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Browser automationE2E testingTesting
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