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Agent skill

Length

by thedaviddias in thedaviddias/Front-End-Checklist

A skill your agent uses when generating URL slugs from article titles, auditing URL structures for unnecessary depth or length, or reviewing URL patterns in a CMS or router configuration.

MITAuto-check passedFrontend & Design

Install Length

skills CLI
$ npx skills add thedaviddias/Front-End-Checklist --skill length -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install thedaviddias/Front-End-Checklist length --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/length .claude/skills/length && rm -rf skills-src

Use ~/.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/

Facts

Skill name
length
GitHub stars
74k
Token cost
~764 tokens
SKILL.md length
360 words
Files
2 (incl. references)
Skills in repo
390
Repo updated
First seen
Licence
MIT

At a glance

A skill your agent uses when generating URL slugs from article titles, auditing URL structures for unnecessary depth or length, or reviewing URL patterns in a CMS or router configuration.

  • Works in 6 steps: Shorten slugs by removing stop words → Flatten URL structure where category… → Remove dates from evergreen content URLs… → …
  • Generating URL slugs from article titles
  • 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

What it does

Length is an agent skill from thedaviddias/Front-End-Checklist. Use when generating URL slugs from article titles, auditing URL structures for unnecessary depth or length, or reviewing URL patterns in a CMS or router configuration.

Its SKILL.md is about 760 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. 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

  • Generating URL slugs from article titles
  • Auditing URL structures for unnecessary depth
  • Reviewing URL patterns in a CMS
  • Router configuration

Example prompts

  • “/length”

Workflow steps

6 steps, taken from the first numbered list in SKILL.md.

  1. Shorten slugs by removing stop words
  2. Flatten URL structure where category hierarchy is not essential
  3. Remove dates from evergreen content URLs (with 301 redirects from old URLs).
  4. Remove session IDs and tracking parameters from URLs used as canonical-url URLs.
  5. Implement changes with 301 redirects from old to new URLs to preserve link equity.
  6. Update sitemaps and internal links after URL changes.

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

Length loads about 764 tokens when it runs, and up to ~1.8k if it reads all its reference files. Until then it costs about 44 tokens; SKILL.md has 360 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~44
When it runs · the whole SKILL.md, loaded when a task matches
~764
With references · SKILL.md plus every file in references/, read only if the agent opens them
~1.8k

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). 360 words, ~764 tokens.

Download SKILL.mdSave it as .claude/skills/length/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
length
description
Use when generating URL slugs from article titles, auditing URL structures for unnecessary depth or length, or reviewing URL patterns in a CMS or router configuration.
metadata.category
seo
metadata.priority
medium
metadata.difficulty
intermediate
metadata.estimatedTime
10
metadata.source
frontendchecklist.io
metadata.url
https://frontendchecklist.io/rules/seo/length

Keep URLs concise

While Google has no strict URL length limit beyond technical constraints, long URLs with deep nesting, excessive parameters, or redundant words are harder for users to read, copy, and share. Google's John Mueller has confirmed that shorter, cleaner URLs are easier to understand and may perform slightly better in search.

Quick Reference

  • Keep URL paths under 100 characters; Google recommends short, descriptive URLs without unnecessary parameters
  • Remove stop words (the, a, of, in) from slugs — /guide-css-grid is better than /a-guide-to-css-grid
  • Deeply nested paths (/blog/2024/03/category/subcategory/post-title) are harder to share and signal distance from the root

Check

For each page URL, extract the path component (excluding domain and query string). Flag: (1) Path length over 100 characters. (2) More than 4 path segments (e.g., /a/b/c/d/e has 5 segments). (3) Common stop words in slugs (the, a, an, of, in, at, to, for, with). (4) Dates in URL paths for evergreen content (e.g., /blog/2024/03/css-guide). (5) Session IDs, tracking parameters, or other dynamic values in paths.

Fix

  1. Shorten slugs by removing stop words:
    • /how-to-optimise-your-websites-core-web-vitals → /optimise-core-web-vitals
    • /a-comprehensive-guide-to-css-grid-layout → /css-grid-guide
  2. Flatten URL structure where category hierarchy is not essential:
    • /blog/2024/march/technology/css-grid → /blog/css-grid
  3. Remove dates from evergreen content URLs (with 301 redirects from old URLs).
  4. Remove session IDs and tracking parameters from URLs used as canonical-url URLs.
  5. Implement changes with 301 redirects from old to new URLs to preserve link equity.
  6. Update sitemaps and internal links after URL changes.
Show full SKILL.md (121 more words)Show less

Explain

Google recommends keeping URLs 'simple, descriptive, and readable'. Long URLs are more prone to being truncated in search snippets, harder to share, and more confusing to users. Deep URL structures (many subdirectories) do not directly harm rankings, but they can increase crawl distance from the root, reducing crawl frequency for deep pages on large sites.

Code Review

Parse the pathname of each URL. Count path segments (split by /). Measure character length of the path. Flag slugs containing common stop words. Report the longest 10 URLs by character count and deepest 10 by segment count. Check whether URL generation utilities strip stop words and limit segment depth.

For full implementation details, code examples, and framework-specific guidance, see references/rule.md.

Rule page: https://frontendchecklist.io/rules/seo/length

© 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/length of thedaviddias/Front-End-Checklist.

  • SKILL.md
  • references/rule.md

Open the folder on GitHubat commit e8d14d0

Compare with similar skills

Length 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.

Length compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Length this skillthedaviddias/Front-End-Checklist74k—~764Automated safety check: PassMIT
Web Artifacts Builderanthropics/skills180k41 repos~769Automated safety check: PassApache-2.0
React Doctormakeplane/plane61k12 repos~657Automated safety check: PassAGPL-3.0
Impeccablebestofjs/bestofjs3.1k27 repos~2.6kAutomated safety check: PassMIT
Figma Design System Builderwarpdotdev/warp65k2 repos~4.4kAutomated safety check: PassAGPL-3.0
Web Interface Guidelines Reviewervercel-labs/openreview1.7k97 repos~308Automated safety check: PassNone

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  • Content Freshness Signals

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  • Geo Meta Tags Audit

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Categories

Questions about Length

What does Length do?

A skill your agent uses when generating URL slugs from article titles, auditing URL structures for unnecessary depth or length, or reviewing URL patterns in a CMS or router configuration. Length is an agent skill from thedaviddias/Front-End-Checklist. Use when generating URL slugs from article titles, auditing URL structures for unnecessary depth or length, or reviewing URL patterns in a CMS or router configuration.

When should I use Length?

Length fits situations like: generating URL slugs from article titles; auditing URL structures for unnecessary depth; reviewing URL patterns in a CMS; router configuration.

How do I install Length in Claude Code?

Run `npx skills add thedaviddias/Front-End-Checklist --skill length -a claude-code`. Or copy the skill folder (skills/length in thedaviddias/Front-End-Checklist) into .claude/skills/length in your project. Claude Code loads it when a task matches its description.

How do I install Length in Codex?

Run `npx skills add thedaviddias/Front-End-Checklist --skill length -a codex`. Or copy the skill folder (skills/length in thedaviddias/Front-End-Checklist) into .agents/skills/length in your project. Codex loads it when a task matches its description.

Can I use Length 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 length -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/length, .gemini/skills/length, .github/skills/length and .opencode/skills/length in your project.

What does Length need to run?

SKILL.md names no scripts, command-line tools or credentials: Length is instructions for the agent only.

Does Length 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 Length 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 Length use?

Length 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 Length use?

About 764 tokens (SKILL.md is roughly 3.1k 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 1k tokens, read only when the agent opens those files.

What are the alternatives to Length?

Skills that share tags, products or a category with Length: Web Artifacts Builder (anthropics/skills, 180k stars), React Doctor (makeplane/plane, 61k stars), Impeccable (bestofjs/bestofjs, 3.1k stars) and Figma Design System Builder (warpdotdev/warp, 65k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Length?

thedaviddias (a GitHub user) maintains it in thedaviddias/Front-End-Checklist, which has 74,412 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.