ralph-plan

ralph-plan is a skill for Claude Code from TechDufus/oh-my-claude. It costs 52 tokens per session (2,354 once invoked), scanned A, original, MIT.

A structured planning process that creates a Product Requirements Document (PRD), a written description of what a product or feature should do. It uses an interview, code research, a plan, and an approval step.

In plain words
What is it for?
It helps start, review, resume, and track planning work for a feature or project.
Why use it?
It turns an unclear request into agreed requirements and an implementation-ready plan before coding begins.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: names the TodoWrite tool.

Part of the oh-my-claude plugin — 12 skills, 1 command, 8 hooks, 2 MCP servers shipped together

Good fit It helps start, review, resume, and track planning work for a feature or project.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/techdufus/oh-my-claude/ralph-plan
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 TechDufus/oh-my-claude --skill ralph-plan
Clone the repo
git clone --depth 1 https://github.com/TechDufus/oh-my-claude

Made for: Claude Code.

Or install oh-my-claude, the plugin that ships this one along with the rest of its 12 skills, 1 command, 8 hooks, 2 MCP servers.

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 ralph-plan

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/techdufus/oh-my-claude/ralph-plan"><img src="https://agentmods.dev/badge/skills/techdufus/oh-my-claude/ralph-plan.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 52 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,354 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: 1 finding, 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 Excessive Agency · line 377
    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 $0.00052 $0.02354
Opus 5 $0.00026 $0.01177
Sonnet 5 $0.00010 $0.00471
Haiku 4.5 $0.00005 $0.00235

Measured 10d ago against content hash f44bb01c5e32, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

ralph-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 10d 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/oh-my-claude/skills/ralph-plan/SKILL.md · 411 lines

How it starts

The opening of the file, as written. The whole thing — 411 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Ralph Plan Skill

Structured PRD generation. Interview, research, plan, approve.

What is Ralph Plan?

Ralph Plan creates comprehensive Product Requirements Documents through a deliberate process:

  1. Interview Phase - Understand requirements through focused questions
  2. Research Phase - Analyze codebase via Explore/librarian
  3. Planning Phase - Generate structured plan with clear steps
  4. Approval Gate - User reviews, modifies, and approves the final PRD

The result is a battle-tested plan ready for implementation by any method the user chooses.

When This Skill Activates

Category Trigger Phrases
Start planning /ralph-plan <topic>, create prd, generate prd, plan this
Check status ralph-plan status
Resume resume ralph-plan

Workflow

Phase 1: Planning

Create a structured plan through interview and research.

Step 1: Initialize Draft

Create draft at .claude/plans/drafts/{topic-slug}.md with template:

# Planning Draft: {topic}

## Status
Phase: Interview
Started: {timestamp}

## Requirements
- [to be captured from interview]

## Decisions
- [choices made during interview]

## Research Findings
- [results from Explore/librarian]

## Open Questions
- [unanswered items]
Step 2: Interview

Conduct focused interview (3-5 questions based on complexity):

Core Questions:

  1. "What problem does this solve?" (understand context)
  2. "What's the scope - minimal viable vs complete?" (set boundaries)
  3. "Any constraints, non-goals, or things to avoid?" (define exclusions)

Follow-up Questions (as needed):

  • Technical approach preferences
  • Dependencies on other work
  • Success criteria

Update draft after each answer.

Step 3: Research

Research the codebase before finalizing:

Agent: Explore
Task: Find relevant files for {topic}
Expected: List of files that will be affected
Agent: oh-my-claude:librarian
Task: Read and summarize key files
Expected: Summary of current implementation patterns

Read the full file on GitHub · 411 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. 10d ago First seen · 411 lines · 52 tokens per session scan A f44bb01c5e32

Subscribe to this mod's changes

ralph-plan is a skill published in the GitHub repository TechDufus/oh-my-claude (176 stars, last pushed 1mo ago), licensed MIT. It adds 52 tokens to every session and 2,354 once invoked, about $0.0003 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 2026-08-30.

Related

Other skills, from other repositories