omc-setup

omc-setup is a skill for Claude Code from RobinNorberg/oh-my-copilot. It costs 27 tokens per session (2,502 once invoked), scanned A, original, MIT.

A setup workflow for installing, updating, or repairing oh-my-copilot, a plugin that adds coding-agent tools and skills.

In plain words
What is it for?
It helps initialize or refresh oh-my-copilot and choose local, global, forced, or help-only setup modes.
Why use it?
It avoids having to configure the plugin manually across marketplace, npm, and local development installations.

Skill for Claude Code

Written for Claude Code: ${CLAUDE_PLUGIN_ROOT} variable. Also seen: reads .claude/ paths; mentions CLAUDE.md; names the AskUserQuestion tool.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the oh-my-copilot plugin — 51 skills, 21 commands, 20 agents, 11 hooks, 1 MCP server shipped together

Good fit It helps initialize or refresh oh-my-copilot and choose local, global, forced, or help-only setup modes.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add RobinNorberg/oh-my-copilot
Claude Code
/plugin install oh-my-copilot

Made for: Claude Code.

Or install oh-my-copilot, the plugin that ships this one along with the rest of its 51 skills, 21 commands, 20 agents, 11 hooks, 1 MCP server.

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 omc-setup

README.md
[![agentmods](https://agentmods.dev/badge/skills/robinnorberg/oh-my-copilot/omc-setup.svg)](https://agentmods.dev/skills/robinnorberg/oh-my-copilot/omc-setup)
Your own site
<a href="https://agentmods.dev/skills/robinnorberg/oh-my-copilot/omc-setup"><img src="https://agentmods.dev/badge/skills/robinnorberg/oh-my-copilot/omc-setup.svg" alt="Measured on agentmods" height="20"></a>
Per session 27 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,502 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 $0.00027 $0.02502
Opus 5 $0.00014 $0.01251
Sonnet 5 $0.00005 $0.00500
Haiku 4.5 $0.00003 $0.00250

Measured 4d ago against content hash afbbdb61c8a8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

omc-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 4d 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.

skills/omc-setup/SKILL.md · 197 lines

How it starts

The opening of the file, as written. The whole thing — 197 lines — stays where its author put it; the contents beside it link to each section on GitHub.

OMC Setup

This is the only command you need to learn. After running this, everything else is automatic.

When this skill is invoked, immediately execute the workflow below. Do not only restate or summarize these instructions back to the user.

Note: All ~/.claude/... paths in this guide respect COPILOT_CONFIG_DIR when that environment variable is set.

Best-Fit Use

Choose this setup flow when the user wants to install, refresh, or repair OMC itself.

  • Marketplace/plugin install users should land here after /plugin install oh-my-copilot
  • npm users should land here after npm i -g oh-my-copilot@latest
  • local-dev and worktree users should land here after updating the checked-out repo and rerunning setup

Flag Parsing

Check for flags in the user's invocation:

  • --help → Show Help Text (below) and stop
  • --local → Phase 1 only (target=local), then stop
  • --global → Phase 1 only (target=global), then stop
  • --force → Skip Pre-Setup Check, run full setup (Phase 1 → 2 → 3 → 4)
  • No flags → Run Pre-Setup Check, then full setup if needed

Help Text

When user runs with --help, display this and stop:

OMC Setup - Configure oh-my-copilot

USAGE:
  /oh-my-copilot:omc-setup           Run initial setup wizard (or update if already configured)
  /oh-my-copilot:omc-setup --local   Configure local project (.claude/CLAUDE.md)
  /oh-my-copilot:omc-setup --global  Configure global settings (~/.claude/CLAUDE.md)
  /oh-my-copilot:omc-setup --force   Force full setup wizard even if already configured
  /oh-my-copilot:omc-setup --help    Show this help

MODES:
  Initial Setup (no flags)
    - Interactive wizard for first-time setup
    - Configures CLAUDE.md (local or global)
    - Sets up HUD statusline
    - Checks for updates
    - Clears retired setup values (5.0.0 removed defaultExecutionMode) and points MCP registration at Claude Code's native config
    - Configures team mode defaults (agent count, type, model)
    - If already configured, offers quick update option

  Local Configuration (--local)
    - Invokes the plugin-local coordinator through `scripts/setup-claude-md.mjs`; the script validates the coordinator response and its exit status before any post-install work
    - Reports coordinator-created byte-identical backups only for files that required mutation
    - Project-specific settings
    - Use this to update project config after OMC upgrades

  Global Configuration (--global)
    - Invokes the plugin-local coordinator through `scripts/setup-claude-md.mjs`; the script validates the coordinator response and its exit status before any post-install work
    - Reports coordinator-created byte-identical backups only for changed global files
    - Default: explicitly overwrites ~/.claude/CLAUDE.md so plain `claude` also uses OMC
    - Optional preserve mode keeps the user's base `CLAUDE.md` and installs OMC into `CLAUDE-omc.md` for `omc` launches
    - Applies to all Claude Code sessions
    - Preserves same-named legacy hook files unless their exact historical contents are independently verified
    - Use this to update global config after OMC upgrades

  Force Full Setup (--force)
    - Bypasses the "already configured" check
    - Runs the complete setup wizard from scratch
    - Use when you want to reconfigure preferences

EXAMPLES:
  /oh-my-copilot:omc-setup           # First time setup (or update CLAUDE.md if configured)
  /oh-my-copilot:omc-setup --local   # Update this project
  /oh-my-copilot:omc-setup --global  # Update all projects
  /oh-my-copilot:omc-setup --force   # Re-run full setup wizard

For more info: https://github.com/Yeachan-Heo/oh-my-copilot

Read the full file on GitHub · 197 lines

Files

What ships with it

4 files 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. 4d ago First seen · 197 lines · 27 tokens per session scan A afbbdb61c8a8

Subscribe to this mod's changes

omc-setup is a skill published in the GitHub repository RobinNorberg/oh-my-copilot (5 stars, last pushed yesterday), licensed MIT. It adds 27 tokens to every session and 2,502 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 2026-09-04.

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