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knack-installer

knack-installer is a skill for Claude Code, Codex from jordan-gibbs/knack-cli. It costs 56 tokens per session (788 once invoked), scanned C, original, MIT.

An installer for Knack, a tool that manages reusable AI-agent skills. It installs the Knack command-line program and helps connect skills to either a private GitHub repository or Knack Cloud.

In plain words
What is it for?
Use it to install Knack on macOS, Linux, or Windows, choose where skills are stored, and set up scripted or interactive onboarding.
Why use it?
It avoids having to install the program and configure its skill storage by hand.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

not rated 22repo 3mo ago C scan 56 tokens original MIT

Good fit Use it to install Knack on macOS, Linux, or Windows, choose where skills are stored, and set up scripted or interactive onboarding.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/jordan-gibbs/knack-cli/installer
View source ↗ jordan-gibbs/knack-cli getknack.ai
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 jordan-gibbs/knack-cli --skill installer
Clone the repo
git clone --depth 1 https://github.com/jordan-gibbs/knack-cli

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 knack-installer

README.md
[![agentmods](https://agentmods.dev/badge/skills/jordan-gibbs/knack-cli/installer/github.svg)](https://agentmods.dev/skills/jordan-gibbs/knack-cli/installer)
Your own site
<a href="https://agentmods.dev/skills/jordan-gibbs/knack-cli/installer"><img src="https://agentmods.dev/badge/skills/jordan-gibbs/knack-cli/installer/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 knack-installer

Your own site · 80×15
<a href="https://agentmods.dev/skills/jordan-gibbs/knack-cli/installer"><img src="https://agentmods.dev/badge/skills/jordan-gibbs/knack-cli/installer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 56 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 788 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 2 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 $0.00056 $0.00788
Opus 5.5 $0.00022 $0.00315
Sonnet 5.5 $0.00011 $0.00158
Haiku 4.5 $0.00006 $0.00079

Measured 2mo ago against content hash 7bd57f61a5b0, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

knack-installer scanned grade C with 2 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.

Downloads and executes remote codehighSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

curl -fsSL https://knack.ai/install | sh

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -fsSL https://knack.ai/install | sh
skills/installer/SKILL.md · 88 lines

How it starts

The opening of the file, as written. The whole thing — 88 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Knack Installer

Install the Knack CLI on the user's machine, then run knack init to set up either self-host (GitHub-backed) or Knack Cloud mode.

What you should do

  1. Confirm intent. Check that the user actually wants to install. If they just mentioned Knack in passing, ask first.

  2. Check if it's already installed:

    knack --version

    If this prints a version, skip to step 4.

  3. Install the binary. Detect the OS and pick the right command:

    • macOS or Linux:

      curl -fsSL https://knack.ai/install | sh

    • Windows (PowerShell):

      irm https://knack.ai/install.ps1 | iex

    The script detects arch, fetches the matching binary from github.com/jordan-gibbs/knack-cli/releases, drops it in ~/.local/bin (or %LOCALAPPDATA%\knack\bin on Windows), and registers Knack with the detected agent surface.

  4. Run init to pick a backend:

    knack init

    This is interactive. The user gets two choices:

    • GitHub (self-host) — skills live in a repo they own. Free, private.
    • Knack Cloud — zero setup, public marketplace at knack.ai.

    For non-interactive setups (CI, scripted onboarding), pass --self-host or --cloud to skip the prompt.

  5. If they picked Knack Cloud, finish auth:

    knack auth login

    For self-host, no further auth is needed if they have gh configured.

  6. Confirm by listing. Run knack list to confirm Knack is wired up correctly. An empty result is fine; an error means something went wrong.

What to tell the user

  • The CLI is open source: github.com/jordan-gibbs/knack-cli
  • Self-host puts skills in their own GitHub repo. The cloud option is at knack.ai if they want zero setup, sharing with teammates, or the public marketplace.
  • Team features (sharing, roles, audit log, SSO) are cloud-only.
  • They can switch modes later by editing ~/.knack/config.yaml or by re-running knack init --self-host / knack init --cloud.

Read the full file on GitHub · 88 lines

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 · 88 lines · 56 tokens per session scan C 7bd57f61a5b0

Subscribe to this mod's changes

knack-installer is a skill published in the GitHub repository jordan-gibbs/knack-cli (22 stars, last pushed 3mo ago), licensed MIT. It adds 56 tokens to every session and 788 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it C with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Building agentsClaude Codeagentagent-skillsagentsaiclaude-code-skill
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