Agent Skills by samber plugin
Twenty-two skills for marketing and engineering: copy, social posts, Chrome extensions, PromQL, research and skill checks
- 243 ★ on the repository
- Last commit
- MIT
Minimal access
Why this level
- Skills are instruction texts and run nothing themselves
- The chrome-extension and promql-cli skills prompt the agent to run commands and edit extension code
Install
- Works in
In your terminal, with SkillFoxx CLI
npx skillfoxx add plugins/agent-skills-by-samberDetects the agents on your machine, shows the access level and pins the version.
Other ways to install
Access and checks
How we reviewMinimal accessThe tool runs nothing and makes no network calls.
- Skills are instruction texts and run nothing themselves
- The chrome-extension and promql-cli skills prompt the agent to run commands and edit extension code
This is third-party code. Review the repository files before installing.
What it does
The samber/cc-skills repository is a set of reusable skills loaded on demand so they do not bloat context. The author says each skill is edited, tested and reviewed by a human. Go skills live separately in the cc-skills-golang repository. Marketing: `copywriting-hooks`, `copywriting-cta`, `copywriting-prose-creator`, `copywriting-tone-of-voice-creator`, `linkedin-ghostwriting`, `substack-ghostwriting`, `press-release-writer`, plus `humaniseur-fr` and `humanizer-en-asd-ste100` for editing text. Engineering: `conventional-git`, `promql-cli`, `chrome-extension`, `crxjs`, `site-launch-checklist` and `frontend-design-deslop`. There are also `technical-article-writer`, `deep-research`, `training-report`, `influence-and-negotiation` and the meta skills `skill-progressive-disclosure-design` and `snyk-agent-scan-compliance`. The author measures the error gap per skill and reports an overall result: 98% with the set against 52% without it. Skills install whole or one at a time through the skills CLI, a Claude Code plugin, a Gemini CLI extension or by copying into an agent's skills folder.
Who it is for. Developers, writers and marketers who work with Claude Code, Cursor, Codex or Gemini CLI and want tested skills for copy, extension development and analytics.
Good fit when
- A landing page or newsletter needs hooks, calls to action and copy in a set tone
- A LinkedIn or Substack post must be written in the author's manner
- A Chrome extension is being built with CRXJS and the agent needs a matching skill
- PromQL queries and Prometheus metrics are handled through the agent
- A pre-launch checklist is needed for a site
Not a fit when
- You need Go skills: they live in the separate cc-skills-golang repository
- You need one narrow skill and nothing more: install it by name with --skill
- You need a product with an interface: these are instruction texts for an agent
Example request
Write a LinkedIn post about our CLI release with the linkedin-ghostwriting skill and suggest three hooksLimitations
Some skills are written for English and French text and do not edit Russian. The directory-based routes (Cursor, Copilot, OpenCode, Antigravity) come down to copying folders into the right directory. The test figures belong to the author: 98% against 52% overall accuracy and a per-skill error gap, with no independent check. Skills such as deep-research and press-release-writer load a lot of context, and the repository table lists the size of each. The last commit is from November 2026.
How to disable. Delete the skill folders from the agent's directory or run /plugin uninstall cc-skills in Claude Code. The Gemini CLI extension is removed with gemini extensions uninstall cc-skills.
FAQ
How do I install one skill instead of the whole set?
With npx skills add https://github.com/samber/cc-skills --skill promql-cli, replacing the last word with the skill you need.
Which agents are supported?
Claude Code, Codex, Gemini CLI, Cursor, GitHub Copilot, OpenCode, Antigravity and OpenClaw. The README gives a route for each: a plugin, an extension or copying into the skills folder.
Where are the Go skills?
In the separate samber/cc-skills-golang repository. This one holds marketing and engineering only.
How do I update the skills?
For Gemini CLI run gemini extensions update cc-skills, for Codex codex plugin update cc-skills. In other cases update the cloned repository.
What does the README table measure?
For each skill it gives the error-rate gap with and without it, plus the size of the description, the SKILL.md file and the whole directory in tokens. The table shows how much context a skill will take.
Discussion
No questions or reviews yet.
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README in short
The description calls skills instruction sets loaded on demand and lists install routes for ten clients. A diagram of skills by area follows (marketing, engineering, developer relations, productivity, meta) along with a table of accuracy and context size.