skill-installer

A skill for installing curated coding-agent skills into the local environment. It helps select a skill and install it with a clear scope and source.

In plain words
What is it for?
Browsing or installing curated skills while preserving custom skills and using an explicit installation scope.
Why use it?
It reduces the risk of installing the wrong skill or silently replacing a custom one. It also encourages recording where an installed skill came from.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/openknots/okcode/skill-installer
Any agent
npx skills add OpenKnots/okcode --skill skill-installer
Clone the repo
git clone --depth 1 https://github.com/OpenKnots/okcode

Made for: Claude Code, Codex.

Per session 12 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 117 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00012 $0.00117
Opus 5 $0.00006 $0.00059
Sonnet 5 $0.00002 $0.00023
Haiku 4.5 $0.00001 $0.00012

Measured 2d ago against content hash 2fc838150283, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

skill-installer 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 2d 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.

packages/shared/src/skills-catalog/system/skill-installer/SKILL.md · 30 lines

What it actually says

Skill Installer

When to use this skill

  • Use when the user wants to browse or install curated skills.

What this skill does

  • Helps choose appropriate skills and install them safely.

Implementation

  • Prefer explicit install scopes and clear provenance.

Best practices

  • Do not overwrite custom skills silently.
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. 2d ago First seen · 30 lines · 12 tokens per session scan A 2fc838150283

Subscribe to this mod's changes

skill-installer is a skill published in the GitHub repository OpenKnots/okcode (24 stars, last pushed 3mo ago), licensed MIT. It adds 12 tokens to every session and 117 once invoked, about $0.0001 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 2026-08-30.

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