rubiks-cube-mcp: Skill for Claude Code

.claude/skills/fix-ui-bug/SKILL.md

fix-ui-bug is a skill for Claude Code from adam-s/rubiks-cube-mcp. It costs 77 tokens per session (3,840 once invoked), scanned C, original, no licence file.

A workflow for finding and fixing interface bugs in a running web dashboard with Playwright, a tool for controlling browsers in tests. It combines program and browser logs into one timeline and repeats the fix-and-check cycle.

In plain words
What is it for?
It is for issues such as dialogs that do not open, flickering visuals while scrubbing, or tag inputs losing focus. It drives the dashboard, applies a patch, and checks the reproducer again.
Why use it?
It helps connect what the browser displays with what the program records, making interactive bugs easier to reproduce and diagnose.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

This is adam-s/rubiks-cube-mcp's own configuration. It tells Claude Code how to work on rubiks-cube-mcp itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything rubiks-cube-mcp configures →

Reuse

Borrowing it

Nothing to install: this file belongs to adam-s/rubiks-cube-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/adam-s/rubiks-cube-mcp/main/.claude/skills/fix-ui-bug/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/adam-s/rubiks-cube-mcp

Made for: Claude Code.

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 fix-ui-bug

README.md
[![agentmods](https://agentmods.dev/badge/skills/adam-s/rubiks-cube-mcp/fix-ui-bug/github.svg)](https://agentmods.dev/skills/adam-s/rubiks-cube-mcp/fix-ui-bug)
Your own site
<a href="https://agentmods.dev/skills/adam-s/rubiks-cube-mcp/fix-ui-bug"><img src="https://agentmods.dev/badge/skills/adam-s/rubiks-cube-mcp/fix-ui-bug/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for fix-ui-bug

Your own site · 80×15
<a href="https://agentmods.dev/skills/adam-s/rubiks-cube-mcp/fix-ui-bug"><img src="https://agentmods.dev/badge/skills/adam-s/rubiks-cube-mcp/fix-ui-bug.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 77 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,840 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 1 finding. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00077 $0.03840
Opus 5 $0.00039 $0.01920
Sonnet 5 $0.00015 $0.00768
Haiku 4.5 $0.00008 $0.00384

Measured 9d ago against content hash 8cbd4bd20109, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade C, and why

fix-ui-bug scanned grade C 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 9d 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.

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

terminate that pid, run `rm -rf web/node_modules/.vite
.claude/skills/fix-ui-bug/SKILL.md · 319 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

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. 9d ago First seen · 319 lines · 77 tokens per session scan C 8cbd4bd20109

Subscribe to this mod's changes

fix-ui-bug is a skill published in the GitHub repository adam-s/rubiks-cube-mcp (0 stars, last pushed 2mo ago), with no licence file. It adds 77 tokens to every session and 3,840 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Related

Other skills, from other repositories

chrome-devtools-cli

Use this skill to write shell scripts or run shell commands to automate tasks in the browser or otherwise use Chrome DevTools via CLI.

ChromeDevTools/chrome-devtools-mcp · 31 tokens

a11y-debugging

Uses Chrome DevTools MCP for accessibility (a11y) debugging and auditing based on web.dev guidelines. Use when testing semantic HTML, ARIA labels, focus states, keyboard navigation, tap targets, and color contrast.

ChromeDevTools/chrome-devtools-mcp · 50 tokens

chrome-devtools

Uses Chrome DevTools via MCP for efficient debugging, troubleshooting and browser automation. Use when debugging web pages, automating browser interactions, analyzing performance, or inspecting network requests. This skill does not apply to --slim mode (MCP configuration).

ChromeDevTools/chrome-devtools-mcp · 55 tokens

chrome-performance-optimizer

Autonomous multi-agent performance optimization loop for Chromium and V8. Supports profile-seeded mode (analyzing Speedometer 3 / JetStream profiles via pprof or Sagacity MCP) and pattern-driven discovery mode (fan-out exploration of Blink and V8 macro-patterns grounded in historical wins and past rejected CLs).…

chromium/chromium · 119 tokens

nullaway

Guide for resolving NullAway static analysis errors. Best practices for: Passing ObservableSupplier/Supplier Dereferencing potentially @Nullable values Adding @NullMarked to Java code.

chromium/chromium · 43 tokens

bisect

Bisect regressions or broken builds in the Chromium repository using deterministic binary search, checking out midpoint commits, syncing dependencies with gclient sync, compiling the target with autoninja, and querying the user for test results until the culprit commit is isolated.

chromium/chromium · 52 tokens