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OMC Setup · yeachan-heo | DecimalAI

agent toolingby yeachan-heo

OMC Setup

yeachan-heo/omc-setup

Source yeachan-heo/oh-my-claudecode ↗License MIT

Install or refresh oh-my-claudecode for plugin, npm, and local-dev setups from the canonical setup flow

SkillScore86Maintained

Automatic

AI Engineer pack

Last verified 9/1/2026

What it changes

Passed 16 of 19 test cases with the skill, and 5 of 19 without it.

Without skill27%

With skill86%

Checks it passed that the model alone missed

Recommends running /oh-my-claudecode:omc-setup.
Delegates statusLine setup explicitly to the hud skill.
Invokes scripts/setup-progress.sh clear when starting fresh.

and 13 more in the full report

13 fixed6 passed either way3 still failing0 broke

Pass-rate lift: +59 pp
Tokens: +110%
Agent turns: 0%
Response time: -36%

Model gemini-3.6-flashMeasured 9/1/2026v219 of 22 cases passed with skill · 19 comparable

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/yeachan-heo-omc-setup/SKILL.md https://app.decimal.ai/s/yeachan-heo-omc-setup/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add yeachan-heo-omc-setup, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/yeachan-heo-omc-setup/ and pins it in .decimal/skills.lock

decimalai skills add yeachan-heo-omc-setup

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/yeachan-heo-omc-setup/SKILL.md https://app.decimal.ai/s/yeachan-heo-omc-setup/SKILL.md

Raw file: /s/yeachan-heo-omc-setup/SKILL.md ↗ · machine-readable summary at /s/yeachan-heo-omc-setup.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 13 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 13

Prompt

I just finished running npm install globally for oh-my-claude-sisyphus. What slash command should I run next to start configuration?

What was checked, without and with the skill
Checked	Without skill	With skill
Recommends running /oh-my-claudecode:omc-setup.	Missed	Passed

case-17 · gemini-3.6-flash · 9/1/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md209 linessingle file

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 CLAUDE_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-claudecode
npm users should land here after npm i -g oh-my-claude-sisyphus@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-claudecode

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

MODES:

Track record

Benchmark

16 / 19

test cases passed, vs 5 / 19 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v5 — 9/1/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

yeachan-heo / oh-my-claudecode

skills/omc-setup/SKILL.md

View on GitHub ↗

License MITImported 9/1/2026Version v2

More skills from the same source and nearby in the registry, with their headline benchmark lift.

Ready to supercharge your AI agents?

See it in action

What's inside

OMC Setup

Best-Fit Use

Flag Parsing

Help Text

Track record

Benchmark

Adoption

SkillSafety

Source

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