skill-installation-support

skill-installation-support is a skill for Claude Code, Codex from stark-ai-de/agent-skills. It costs 66 tokens per session (741 once invoked), scanned A, original, Apache-2.0.

A guide for installing and managing Agent Skills with the Vercel skills command-line tool. Agent Skills are reusable instruction packages that teach coding agents how to handle specific tasks.

In plain words
What is it for?
Use it to add, list, update, remove, or troubleshoot skills, including problems where the command-line tool cannot discover a skill or reports an installation error.
Why use it?
It clarifies confusing choices such as installing one skill or a whole repository, using project or global scope, and targeting Codex, Claude Code, Cursor, or several agents.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions Claude Code; mentions Codex; mentions Cursor.

Good fit Use it to add, list, update, remove, or troubleshoot skills, including problems where the command-line tool cannot discover a skill or reports an installation error.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/stark-ai-de/agent-skills/skill-installation-support
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 stark-ai-de/agent-skills --skill skill-installation-support
Clone the repo
git clone --depth 1 https://github.com/stark-ai-de/agent-skills

Made for: Claude Code, Codex.

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 skill-installation-support

README.md
[![agentmods](https://agentmods.dev/badge/skills/stark-ai-de/agent-skills/skill-installation-support/github.svg)](https://agentmods.dev/skills/stark-ai-de/agent-skills/skill-installation-support)
Your own site
<a href="https://agentmods.dev/skills/stark-ai-de/agent-skills/skill-installation-support"><img src="https://agentmods.dev/badge/skills/stark-ai-de/agent-skills/skill-installation-support/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 skill-installation-support

Your own site · 80×15
<a href="https://agentmods.dev/skills/stark-ai-de/agent-skills/skill-installation-support"><img src="https://agentmods.dev/badge/skills/stark-ai-de/agent-skills/skill-installation-support.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 66 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 741 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 $0.00066 $0.00741
Opus 5 $0.00033 $0.00370
Sonnet 5 $0.00013 $0.00148
Haiku 4.5 $0.00007 $0.00074

Measured 10d ago against content hash c923c0d659dd, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

skill-installation-support 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 10d 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.

incubator/skills/skill-maintenance/skill-installation-support/SKILL.md · 97 lines

How it starts

The opening of the file, as written. The whole thing — 97 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill Installation Support

Goal

Help users install, list, update, remove, and troubleshoot Agent Skills with clear commands and safe distinctions between local, global, and agent-specific installation.

When to use

  • The user asks how to install a skills repo or one skill.
  • npx skills@latest add fails or does not discover expected skills.
  • The user asks about Codex, Claude Code, Cursor, or all-agent installation targets.

When not to use

  • The user wants to create or review a skill; use skill-authoring-review.
  • The user wants to maintain this repository's catalog or release state; use skill-repo-curator.
  • The source skill has unclear provenance or license and should not be installed yet.

Inputs

  • Repository path or GitHub owner/repo.
  • Desired skill name, target agent, and global or project install preference.
  • Error output from npx skills@latest.
  • Local skills/ tree and SKILL.md frontmatter when troubleshooting discovery.

Inputs to inspect

  • Inspect the source path or repository, requested skill name, target agent, global/project scope, and CLI error output.
  • Check SKILL.md names and descriptions when discovery fails.

Process

  1. Identify source: local folder, GitHub repo, full Git URL, or specific skill.
  2. List skills before installing when the source is unfamiliar.
  3. Choose global or project install based on the user's scope.
  4. Choose target agent flag based on the user's runtime.
  5. Troubleshoot discovery by checking folder structure, SKILL.md, name matching, and CLI output.
  6. Avoid global installation or overwrites without user approval.

Workflow

Follow the process above, then return a copy-pasteable command plus a verification command before suggesting any global install.

Decision points

  • Use --list before installation for unfamiliar repos.
  • Use --skill <name> when installing one skill from a multi-skill repo.
  • Use --all only when the user wants all supported agents.
  • Prefer local folder install for testing unpublished repos.

Read the full file on GitHub · 97 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 10d ago First seen · 97 lines · 66 tokens per session scan A c923c0d659dd

Subscribe to this mod's changes

skill-installation-support is a skill published in the GitHub repository stark-ai-de/agent-skills (5 stars, last pushed 2d ago), licensed Apache-2.0. It adds 66 tokens to every session and 741 once invoked, about $0.0003 per session on Opus 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.