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Agent skill

Og URL Match

by thedaviddias in thedaviddias/Front-End-Checklist

A skill your agent uses when auditing Open Graph tags or investigating why social share counts appear low.

MITAuto-check passed

Install Og URL Match

skills CLI
$ npx skills add thedaviddias/Front-End-Checklist --skill og-url-match -a claude-code

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

GitHub CLI
$ gh skill install thedaviddias/Front-End-Checklist og-url-match --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/og-url-match .claude/skills/og-url-match && 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
og-url-match
GitHub stars
74k
Token cost
~543 tokens
SKILL.md length
255 words
Files
2 (incl. references)
Skills in repo
390
Repo updated
First seen
Licence
MIT

At a glance

A skill your agent uses when auditing Open Graph tags or investigating why social share counts appear low.

  • Auditing Open Graph tags
  • 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
  • Investigating why social share counts appear low

What it does

Og URL Match is an agent skill from thedaviddias/Front-End-Checklist. Use when auditing Open Graph tags or investigating why social share counts appear low. Applies to any page with both canonical-url and og:url tags.

Its SKILL.md is about 540 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`).

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

  • Auditing Open Graph tags
  • Investigating why social share counts appear low

Example prompts

  • “/og-url-match”

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

Og URL Match loads about 543 tokens when it runs, and up to ~1.5k if it reads all its reference files. Until then it costs about 40 tokens; SKILL.md has 255 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~40
When it runs · the whole SKILL.md, loaded when a task matches
~543
With references · SKILL.md plus every file in references/, read only if the agent opens them
~1.5k

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). 255 words, ~543 tokens.

Download SKILL.mdSave it as .claude/skills/og-url-match/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
og-url-match
description
Use when auditing Open Graph tags or investigating why social share counts appear low. Applies to any page with both canonical-url and og:url tags.
metadata.category
seo
metadata.priority
medium
metadata.difficulty
beginner
metadata.estimatedTime
10
metadata.source
frontendchecklist.io
metadata.url
https://frontendchecklist.io/rules/seo/og-url-match

OG URL Match

When og:url doesn't match the canonical URL, social platforms track share counts separately for each URL variant—published share counts get split across multiple URLs and appear lower than they actually are.

Quick Reference

  • og:url must exactly match the <link rel='canonical-url'> URL
  • Use absolute HTTPS URLs for both og:url and canonical-url
  • Mismatched URLs cause social platforms to aggregate share counts on the wrong URL
  • og:url should be the clean canonical URL without tracking parameters

Check

Compare the og:url meta tag value with the <link rel='canonical'> href value. Both must be identical absolute HTTPS URLs. Flag any page where they differ, either in protocol, domain, path, or query string.

Fix

Set og:url to exactly the same absolute HTTPS URL as the canonical tag. Remove any UTM parameters, session IDs, or tracking tokens from og:url. If no canonical tag exists, add one and set og:url to match it.

Explain

Social platforms use og:url as the canonical identifier for aggregating share counts and comments. If og:url differs from the canonical tag, shares on the page URL and shares of the og:url accumulate separately, making your content appear less popular than it is and creating attribution confusion.

Code Review

Compare the value of <meta property='og:url' content='...'> with the value of <link rel='canonical' href='...'>. They must be identical character-for-character. Check for: different protocols (http vs https), www vs non-www mismatch, query string differences, trailing slash inconsistencies. Flag any page where the two values differ.

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

Rule page: https://frontendchecklist.io/rules/seo/og-url-match

© 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/og-url-match of thedaviddias/Front-End-Checklist.

  • SKILL.md
  • references/rule.md

Open the folder on GitHubat commit e8d14d0

Compare with similar skills

Og URL Match 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.

Og URL Match compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Og URL Match this skillthedaviddias/Front-End-Checklist74k—~543Automated safety check: PassMIT
Production Auditaffaan-m/ECC277k1 repos~1.9kAutomated safety check: PassMIT
SEO Auditevery-app/open-seo23k—~3.8kAutomated safety check: PassMIT
Graphagenticnotetaking/arscontexta3.5k—~4.9kAutomated safety check: NotesMIT
Aims Auditalirezarezvani/claude-skills28k—~1.3kAutomated safety check: PassMIT
Geo Auditsickn33/agentic-awesome-skills47k1 repos~3.4kAutomated safety check: NotesMIT

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  • SEO Audit

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  • Content Freshness Signals

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    Audits article pages for freshness signals, covering the Last-Modified header, Article JSON-LD dateModified and a visible last-updated date, and fixes mismatches.

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  • Geo Meta Tags Audit

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Questions about Og URL Match

What does Og URL Match do?

A skill your agent uses when auditing Open Graph tags or investigating why social share counts appear low. Og URL Match is an agent skill from thedaviddias/Front-End-Checklist. Use when auditing Open Graph tags or investigating why social share counts appear low.

When should I use Og URL Match?

Og URL Match fits situations like: auditing Open Graph tags; investigating why social share counts appear low.

How do I install Og URL Match in Claude Code?

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

How do I install Og URL Match in Codex?

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

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

What does Og URL Match need to run?

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

Does Og URL Match 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 Og URL Match 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 Og URL Match use?

Og URL Match 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 Og URL Match use?

About 543 tokens (SKILL.md is roughly 2.2k 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 982 tokens, read only when the agent opens those files.

What are the alternatives to Og URL Match?

Skills that share tags, products or a category with Og URL Match: Production Audit (affaan-m/ECC, 277k stars), SEO Audit (every-app/open-seo, 23k stars), Graph (agenticnotetaking/arscontexta, 3.5k stars) and Aims Audit (alirezarezvani/claude-skills, 28k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Og URL Match?

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.