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detect-github-url

detect-github-url is a skill for Claude Code from idan-yaron/claude-cowork-skills-toolkit. It costs 107 tokens per session (363 once invoked), scanned A, original, MIT.

A trigger that notices when a user shares a GitHub link, especially a link to a repository containing Claude skills or plugins.

In plain words
What is it for?
It helps identify GitHub skill repositories, offer to browse their contents, and load selected skills for use.
Why use it?
It prevents the link from being overlooked and starts the process of checking what the repository contains. The user can review available skills before choosing what to load.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter. Also seen: mentions Claude Code.

Part of the skills-toolkit plugin — 5 skills shipped together

not rated 5repo 6mo ago A scan 107 tokens original MIT

Good fit It helps identify GitHub skill repositories, offer to browse their contents, and load selected skills for use.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/idan-yaron/claude-cowork-skills-toolkit/detect-github-url
View source ↗ idan-yaron/claude-cowork-skills-toolkit
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.

Any agent
npx skills add idan-yaron/claude-cowork-skills-toolkit --skill detect-github-url
Clone the repo
git clone --depth 1 https://github.com/idan-yaron/claude-cowork-skills-toolkit

Made for: Claude Code.

Or install skills-toolkit, the plugin that ships this one along with the rest of its 5 skills.

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 detect-github-url

README.md
[![agentmods](https://agentmods.dev/badge/skills/idan-yaron/claude-cowork-skills-toolkit/detect-github-url/github.svg)](https://agentmods.dev/skills/idan-yaron/claude-cowork-skills-toolkit/detect-github-url)
Your own site
<a href="https://agentmods.dev/skills/idan-yaron/claude-cowork-skills-toolkit/detect-github-url"><img src="https://agentmods.dev/badge/skills/idan-yaron/claude-cowork-skills-toolkit/detect-github-url/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 detect-github-url

Your own site · 80×15
<a href="https://agentmods.dev/skills/idan-yaron/claude-cowork-skills-toolkit/detect-github-url"><img src="https://agentmods.dev/badge/skills/idan-yaron/claude-cowork-skills-toolkit/detect-github-url.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 107 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 363 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original 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 $0.00107 $0.00363
Opus 5.5 $0.00043 $0.00145
Sonnet 5.5 $0.00021 $0.00073
Haiku 4.5 $0.00011 $0.00036

Measured 2mo ago against content hash 93c211175702, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

detect-github-url scanned grade A with 0 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 2mo 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/detect-github-url/SKILL.md · 41 lines

What it actually says

Detect GitHub Skill Repository

The user has shared a GitHub URL. Recognize it and offer to browse its skills.

What to Do

  1. Identify the GitHub URL from the user's message.

  2. Respond naturally — acknowledge the link and explain you can browse available skills.

  3. Offer to browse:

    "I can check this repo for skills and show you what's available. Want me to take a look?"

  4. When the user confirms, run /skills-load <url>. This shows a numbered catalog — the user picks which skills to install as a plugin.

  5. If the URL doesn't look like a skills repo, still offer: "This might not contain Claude skills — want me to check anyway?"

Key Points

  • Be conversational, not robotic
  • The catalog-first approach means the user picks what they need — no bulk loading
  • Selected skills get packaged as a .plugin file and presented with a "Save plugin" button for one-click installation into the / menu
  • Skills are also injected into the conversation for immediate use
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. 2mo ago First seen · 41 lines · 107 tokens per session scan A 93c211175702

Subscribe to this mod's changes

detect-github-url is a skill published in the GitHub repository idan-yaron/claude-cowork-skills-toolkit (5 stars, last pushed 6mo ago), licensed MIT. It adds 107 tokens to every session and 363 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Claude Codeai-toolsanthropicclaudeclaude-coworkclaude-plugins
Related

detect-github-url compared with skills from other repositories

detect-github-url next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
detect-github-urlidan-yaron/claude-cowork-skills-toolkitSkill56mo agoMITA107Claude Code
senior-frontendcomposio-community/awesome-claude-pluginsSkill2.0k2d agononeA52Claude Code
canvas-designcomposio-community/awesome-claude-pluginsSkill2.0k2d agononeA59Claude Code
frontend-designcomposio-community/awesome-claude-pluginsSkill2.0k2d agononeA43Claude Code
mcp-buildercomposio-community/awesome-claude-pluginsSkill2.0k2d agononeA61Claude Code
artifacts-buildercomposio-community/awesome-claude-pluginsSkill2.0k2d agononeA63Claude Code
changelog-generatorcomposio-community/awesome-claude-pluginsSkill2.0k2d agononeA48Claude Code