claude-setup

A setup checker for the Claude companion tools in the current repository. It reports whether the Claude command-line tool is available, authenticated, and configured correctly.

In plain words
What is it for?
Use it to check Claude CLI availability, authentication, and runtime configuration for a repository.
Why use it?
It helps identify setup or access problems before you try to run Claude tasks. The results can also be returned as JSON for other tools.

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/nikuscs/codex-cc-plugin/claude-setup
Any agent
npx skills add nikuscs/codex-cc-plugin --skill claude-setup
Clone the repo
git clone --depth 1 https://github.com/nikuscs/codex-cc-plugin

Made for: Claude Code, Codex.

Per session 27 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 80 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 $0.00027 $0.00080
Opus 5 $0.00014 $0.00040
Sonnet 5 $0.00005 $0.00016
Haiku 4.5 $0.00003 $0.00008

Measured 2d ago against content hash fd60980e19eb, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

claude-setup 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.

plugins/claude/skills/claude-setup/SKILL.md · 17 lines

What it actually says

Claude Setup

Run the Claude companion setup flow for the current repository.

Use:

node plugins/claude/scripts/claude-companion.mjs setup

Add --json for machine-readable output.

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 · 17 lines · 27 tokens per session scan A fd60980e19eb

Subscribe to this mod's changes

claude-setup is a skill published in the GitHub repository nikuscs/codex-cc-plugin (6 stars, last pushed 3mo ago), licensed MIT. It adds 27 tokens to every session and 80 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 2026-08-31.

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