omc-plan

omc-plan is a skill for Claude Code from Yeachan-Heo/oh-my-claudecode. It costs 11 tokens per session (5,333 once invoked), scanned A, original, MIT.

A planning workflow for clarifying vague software projects before implementation. It can gather requirements through an interview and review plans from multiple perspectives.

In plain words
What is it for?
Use it to scope broad ideas, collect requirements, review an existing plan, or validate an important plan with several viewpoints.
Why use it?
It reduces rework caused by unclear requirements, expanding scope, and missed edge cases. It gives coding work a more defined starting point.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter. Also seen: names the AskUserQuestion tool; mentions Claude Code; mentions Codex.

Part of the oh-my-claudecode plugin — 37 skills, 21 commands, 19 agents, 11 hooks, 1 MCP server shipped together

Good fit Use it to scope broad ideas, collect requirements, review an existing plan, or validate an important plan with several viewpoints.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/yeachan-heo/oh-my-claudecode/plan
About the project

Oh My Claude Code is a multi-agent orchestration system for Claude Code, coordinating specialized agents, commands, skills, hooks, and workflows. It is designed for developers who want Claude Code to handle coding tasks through coordinated agent roles. Catalogue entries are components of its Claude Code workflow, including agents, commands, skills, hooks, instructions, MCP configuration, and a plugin.

Yeachan-Heo/oh-my-claudecode · 39,083 stars · on GitHub · oh-my-claudecode.dev

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 Yeachan-Heo/oh-my-claudecode --skill plan
Clone the repo
git clone --depth 1 https://github.com/Yeachan-Heo/oh-my-claudecode

Made for: Claude Code.

Or install oh-my-claudecode, the plugin that ships this one along with the rest of its 37 skills, 21 commands, 19 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-plan

README.md
[![agentmods](https://agentmods.dev/badge/skills/yeachan-heo/oh-my-claudecode/plan/github.svg)](https://agentmods.dev/skills/yeachan-heo/oh-my-claudecode/plan)
Your own site
<a href="https://agentmods.dev/skills/yeachan-heo/oh-my-claudecode/plan"><img src="https://agentmods.dev/badge/skills/yeachan-heo/oh-my-claudecode/plan/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 omc-plan

Your own site · 80×15
<a href="https://agentmods.dev/skills/yeachan-heo/oh-my-claudecode/plan"><img src="https://agentmods.dev/badge/skills/yeachan-heo/oh-my-claudecode/plan.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 11 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,333 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 7 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Prompt Injection · line 53
    Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.
    Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
  • medium Prompt Injection · line 55
    Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.
    Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
  • medium Prompt Injection · line 58
    Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.
    Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
  • medium Prompt Injection · line 56
    Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.
    Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
  • medium Excessive Agency · line 115
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
  • medium Excessive Agency · line 127
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
  • medium Excessive Agency · line 275
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
How audits are shown
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 $0.00011 $0.05333
Opus 5 $0.00005 $0.02667
Sonnet 5 $0.00002 $0.01067
Haiku 4.5 $0.00001 $0.00533

Measured 7d ago against content hash 465eb49b8c30, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

omc-plan 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 7d 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

  • omc-plan — 92% identical, 30 lines differ
skills/plan/SKILL.md · 293 lines

How it starts

The opening of the file, as written. The whole thing — 293 lines — stays where its author put it; the contents beside it link to each section on GitHub.

<Use_When>

  • User wants to plan before implementing -- "plan this", "plan the", "let's plan"
  • User wants structured requirements gathering for a vague idea
  • User wants an existing plan reviewed -- "review this plan", --review
  • User wants multi-perspective consensus on a plan -- --consensus, "ralplan"
  • Task is broad or vague and needs scoping before any code is written </Use_When>

<Do_Not_Use_When>

  • User wants autonomous end-to-end execution -- use autopilot instead
  • User wants to start coding immediately with a clear task -- use ralph or delegate to executor
  • User asks a simple question that can be answered directly -- just answer it
  • Task is a single focused fix with obvious scope -- use an execution skill instead of running it from this planning module </Do_Not_Use_When>

<Why_This_Exists> Jumping into code without understanding requirements leads to rework, scope creep, and missed edge cases. Plan provides structured requirements gathering, expert analysis, and quality-gated plans so that execution starts from a solid foundation. The consensus mode adds multi-perspective validation for high-stakes projects. </Why_This_Exists>

<Execution_Policy>

  • Auto-detect interview vs direct mode based on request specificity
  • Ask one question at a time during interviews -- never batch multiple questions
  • Gather codebase facts via explore agent before asking the user about them
  • Plans must meet quality standards: 80%+ claims cite file/line, 90%+ criteria are testable
  • Consensus mode runs fully automated by default; add --interactive to enable user prompts at draft review and final approval steps
  • Consensus mode uses RALPLAN-DR short mode by default; switch to deliberate mode with --deliberate or when the request explicitly signals high risk (auth/security, data migration, destructive/irreversible changes, production incident, compliance/PII, public API breakage)
  • Planning/execution boundary: planning modes inspect context and produce plans/specs/proposals only. They MUST mark artifacts as pending approval unless the user has explicitly opted into execution in the current turn or via the structured approval UI. Before explicit execution approval, planning modes MUST NOT run mutation-oriented shell commands, edit source files, commit, push, open PRs, invoke execution skills, or delegate implementation tasks.
  • Goal workflow boundary: when a plan compares Claude Code /goal, Ralph, Team, or artifact-only Ultragoal, identify exactly one primary loop authority and use the deterministic conflict policies refuse, adopt_existing, and artifact_only rather than non-deterministic warning handling. /goal facts must cite Claude Code/Anthropic sources only (Claude Code /goal docs: https://code.claude.com/docs/en/goal; Anthropic Claude Code changelog: https://raw.githubusercontent.com/anthropics/claude-code/main/CHANGELOG.md), and plans MUST NOT claim the /goal evaluator independently runs commands or reads files; require surfaced proof evidence before any completion claim.
  • Goal workflow doc target: for user-facing comparisons, keep examples aligned with docs/shared/mode-selection-guide.md#goal-oriented-workflow-selection and docs/REFERENCE.md#goal-workflow-ux-goal-ralph-team-ultragoal. </Execution_Policy>

Mode Selection

Mode Trigger Behavior
Interview Default for broad requests Interactive requirements gathering
Direct --direct, or detailed request Skip interview, generate plan directly
Consensus --consensus, "ralplan" Planner -> Architect -> Critic loop until agreement with RALPLAN-DR structured deliberation (short by default, --deliberate for high-risk); add --interactive for user prompts at draft and approval steps
Review --review, "review this plan" Critic evaluation of existing plan

Read the full file on GitHub · 293 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. 7d ago First seen · 293 lines · 11 tokens per session scan A 465eb49b8c30

Subscribe to this mod's changes

omc-plan is a skill published in the GitHub repository Yeachan-Heo/oh-my-claudecode (39,083 stars, last pushed yesterday), licensed MIT. It adds 11 tokens to every session and 5,333 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 2026-09-03.

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