Tailwindcss Development
anonaddy/anonaddy
Always invoke when the user's message includes 'tailwind' in any form.
A skill your agent uses when reviewing templates, rendered HTML, or shared components related to Ensure all IDs are unique.
Install Unique Id
$ npx skills add thedaviddias/Front-End-Checklist --skill unique-id -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install thedaviddias/Front-End-Checklist unique-id --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/unique-id .claude/skills/unique-id && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "unique-id" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/unique-id into .claude/skills/unique-id/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unique-id", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/unique-idType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add thedaviddias/Front-End-Checklist --skill unique-id -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install thedaviddias/Front-End-Checklist unique-id --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/unique-id .agents/skills/unique-id && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "unique-id" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/unique-id into .agents/skills/unique-id/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unique-id", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add thedaviddias/Front-End-Checklist --skill unique-id -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install thedaviddias/Front-End-Checklist unique-id --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/unique-id .cursor/skills/unique-id && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "unique-id" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/unique-id into .cursor/skills/unique-id/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unique-id", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/thedaviddias/Front-End-Checklist.git --path skills/unique-id--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add thedaviddias/Front-End-Checklist --skill unique-id -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install thedaviddias/Front-End-Checklist unique-id --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/unique-id .gemini/skills/unique-id && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "unique-id" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/unique-id into .gemini/skills/unique-id/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unique-id", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install thedaviddias/Front-End-Checklist unique-idInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add thedaviddias/Front-End-Checklist --skill unique-id -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/unique-id .github/skills/unique-id && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "unique-id" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/unique-id into .github/skills/unique-id/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unique-id", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add thedaviddias/Front-End-Checklist --skill unique-id -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install thedaviddias/Front-End-Checklist unique-id --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/unique-id .opencode/skills/unique-id && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "unique-id" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/unique-id into .opencode/skills/unique-id/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unique-id", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
unique-id- GitHub stars
- 74k
- Token cost
- ~423 tokens
- SKILL.md length
- 169 words
- Files
- 2 (incl. references)
- Skills in repo
- 390
- Repo updated
- First seen
- Licence
- MIT
At a glance
A skill your agent uses when reviewing templates, rendered HTML, or shared components related to Ensure all IDs are unique.
- Reviewing templates
- SKILL.md covers Quick Reference, Check, Fix and Explain, plus 1 more section
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Shared components related to Ensure all IDs are unique
What it does
Unique Id is an agent skill from thedaviddias/Front-End-Checklist. Use when reviewing templates, rendered HTML, or shared components related to Ensure all IDs are unique. Validate the final browser-facing markup, not just the source framework abstraction.
Its SKILL.md is about 420 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/rule.md`).
It sits in Frontend & Design. It works with JavaScript. The repository describes itself as: 🗂 The essential checklist for modern web development, for humans and AI agents. The licence is MIT.
When your agent uses it
- Reviewing templates
- Shared components related to Ensure all IDs are unique
Example prompts
- “/unique-id”
What it can do on your machine
Read from SKILL.md and the folder at commit e8d14d0. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
frontendchecklist.io
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Unique Id loads about 423 tokens when it runs, and up to ~3.9k if it reads all its reference files. Until then it costs about 50 tokens; SKILL.md has 169 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from thedaviddias/Front-End-Checklist at commit e8d14d0, republished under its MIT licence (© thedaviddias). 169 words, ~423 tokens.
Download SKILL.mdSave it as
.claude/skills/unique-id/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- unique-id
- description
- Use when reviewing templates, rendered HTML, or shared components related to Ensure all IDs are unique. Validate the final browser-facing markup, not just the source framework abstraction.
- metadata.category
- html
- metadata.priority
- high
- metadata.difficulty
- beginner
- metadata.estimatedTime
- 10
- metadata.source
- frontendchecklist.io
- metadata.url
- https://frontendchecklist.io/rules/html/unique-id
Ensure all IDs are unique
Duplicate IDs break form accessibility (labels don't connect), ARIA relationships fail, and JavaScript getElementById returns wrong elements—causing silent bugs.
Quick Reference
- Each ID must appear only once per HTML document
- Use classes for styling, IDs for unique anchors/references
- Check for duplicates introduced by component libraries
- Duplicate IDs break form labels, ARIA, and getElementById
Check
Scan this HTML document to ensure all ID attributes are unique across the entire page and properly reference related elements.
Fix
Remove duplicate ID values, ensure each ID is used only once per page, and update any references like labels, ARIA attributes, or JavaScript selectors.
Explain
Explain why unique IDs are essential for HTML validity, accessibility (form labels, ARIA), JavaScript functionality, and CSS styling.
Code Review
Review templates, server-rendered HTML, and shared components that output markup related to Ensure all IDs are unique. Flag exact elements, attributes, and routes where the rendered HTML violates the rule.
For full implementation details, code examples, and framework-specific guidance,
see references/rule.md.
Rule page: https://frontendchecklist.io/rules/html/unique-id
© thedaviddias, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file (references) in skills/unique-id of thedaviddias/Front-End-Checklist.
- SKILL.md
- references/rule.md
Open the folder on GitHubat commit e8d14d0
Compare with similar skills
Unique Id next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Unique Id this skillthedaviddias/Front-End-Checklist | 74k | — | ~423 | Automated safety check: Pass | MIT | |
| Tailwindcss Developmentanonaddy/anonaddy | 4.9k | 10 repos | ~865 | Automated safety check: Pass | MIT | |
| Figma use_figma Plugin API Ruleswarpdotdev/warp | 65k | 4 repos | ~4.4k | Automated safety check: Pass | AGPL-3.0 | |
| GSAP Core Animationgreensock/gsap-skills | 16k | 3 repos | ~3.7k | Automated safety check: Pass | MIT | |
| Scroll World Landing Pageoso95/scroll-world | 9.9k | 1 repos | ~12k | Automated safety check: Notes | MIT | |
| Tabler Astro Component Scriptstabler/tabler | 42k | — | ~2.1k | Automated safety check: Pass | MIT |
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Rules for adding or fixing client-side scripts in Tabler's Astro components so the copied preview HTML stays readable, self-contained and runs in the right order.
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Related
Works with
Categories
Questions about Unique Id
What does Unique Id do?
A skill your agent uses when reviewing templates, rendered HTML, or shared components related to Ensure all IDs are unique. Unique Id is an agent skill from thedaviddias/Front-End-Checklist. Use when reviewing templates, rendered HTML, or shared components related to Ensure all IDs are unique.
When should I use Unique Id?
Unique Id fits situations like: reviewing templates; shared components related to Ensure all IDs are unique.
How do I install Unique Id in Claude Code?
Run `npx skills add thedaviddias/Front-End-Checklist --skill unique-id -a claude-code`. Or copy the skill folder (skills/unique-id in thedaviddias/Front-End-Checklist) into .claude/skills/unique-id in your project. Claude Code loads it when a task matches its description.
How do I install Unique Id in Codex?
Run `npx skills add thedaviddias/Front-End-Checklist --skill unique-id -a codex`. Or copy the skill folder (skills/unique-id in thedaviddias/Front-End-Checklist) into .agents/skills/unique-id in your project. Codex loads it when a task matches its description.
Can I use Unique Id in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add thedaviddias/Front-End-Checklist --skill unique-id -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/unique-id, .gemini/skills/unique-id, .github/skills/unique-id and .opencode/skills/unique-id in your project.
What does Unique Id need to run?
SKILL.md names no scripts, command-line tools or credentials: Unique Id is instructions for the agent only.
Does Unique Id access the network?
SKILL.md names 1 domain. As links in the text: frontendchecklist.io. This is read from the text; nothing was executed.
Is Unique Id safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Unique Id use?
Unique Id is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Unique Id use?
About 423 tokens (SKILL.md is roughly 1.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 3.4k tokens, read only when the agent opens those files.
What are the alternatives to Unique Id?
Skills that share tags, products or a category with Unique Id: Tailwindcss Development (anonaddy/anonaddy, 4.9k stars), Figma use_figma Plugin API Rules (warpdotdev/warp, 65k stars), GSAP Core Animation (greensock/gsap-skills, 16k stars) and Scroll World Landing Page (oso95/scroll-world, 9.9k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Unique Id?
thedaviddias (a GitHub user) maintains it in thedaviddias/Front-End-Checklist, which has 74,421 GitHub stars. The repository holds 390 skills in this directory. The repository was last updated on October 6, 2026.
Source: thedaviddias/Front-End-Checklist on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.