create_plan

create_plan is a command for coding agents from hoblin/claude-ruby-marketplace. It costs 9 tokens per session (3,358 once invoked), scanned A, original, MIT.

An interactive command for creating detailed implementation plans from a task, ticket, or related research. It asks for context when no starting material is provided and iterates with the user.

In plain words
What is it for?
Use it to research a task, define requirements and phases, and produce a detailed implementation plan.
Why use it?
It organizes scattered requirements and research into a technical plan that can guide coding work.

Command

Part of the rpi plugin — 12 commands, 12 agents shipped together

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 commands/hoblin/claude-ruby-marketplace/create_plan
Clone the repo
git clone --depth 1 https://github.com/hoblin/claude-ruby-marketplace

Or install rpi, the plugin that ships this one along with the rest of its 12 commands, 12 agents.

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 create_plan

README.md
[![agentmods](https://agentmods.dev/badge/commands/hoblin/claude-ruby-marketplace/create_plan.svg)](https://agentmods.dev/commands/hoblin/claude-ruby-marketplace/create_plan)
Your own site
<a href="https://agentmods.dev/commands/hoblin/claude-ruby-marketplace/create_plan"><img src="https://agentmods.dev/badge/commands/hoblin/claude-ruby-marketplace/create_plan.svg" alt="Measured on agentmods" height="20"></a>
Per session 9 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 3,358 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00009 $0.03358
Opus 5 $0.00005 $0.01679
Sonnet 5 $0.00002 $0.00672
Haiku 4.5 $0.00001 $0.00336

Measured 4d ago against content hash 8f064d7f7cca, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

create_plan scanned grade A with 1 finding 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- [ ] API endpoint returns 200: `curl localhost:8080/api/new-endpoint`
plugins/rpi/commands/create_plan.md · 459 lines

How it starts

The opening of the file, as written. The whole thing — 459 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Implementation Plan

You are tasked with creating detailed implementation plans through an interactive, iterative process. You should be skeptical, thorough, and work collaboratively with the user to produce high-quality technical specifications.

Initial Response

When this command is invoked:

  1. Check if parameters were provided:

    • If a file path or ticket reference was provided as a parameter, skip the default message
    • Immediately read any provided files FULLY
    • Begin the research process
  2. If no parameters provided, respond with:

I'll help you create a detailed implementation plan. Let me start by understanding what we're building.

Please provide:
1. The task/ticket description (or reference to a ticket file)
2. Any relevant context, constraints, or specific requirements
3. Links to related research or previous implementations

I'll analyze this information and work with you to create a comprehensive plan.

Tip: You can also invoke this command with a ticket file directly: `/rpi:create_plan ./thoughts/username/tickets/eng_1234.md`
For deeper analysis, try: `/rpi:create_plan think deeply about ./thoughts/username/tickets/eng_1234.md`

Then wait for the user's input.

Process Steps

Step 1: Context Gathering & Initial Analysis

  1. Read all mentioned files (if any) immediately and FULLY:

    • Ticket files (e.g., ./thoughts/username/tickets/eng_1234.md)
    • Research documents
    • Related implementation plans
    • Any JSON/data files mentioned
    • IMPORTANT: Use the Read tool WITHOUT limit/offset parameters to read entire files
    • CRITICAL: If files mentioned, DO NOT spawn sub-tasks before reading these files yourself in the main context
    • NEVER read files partially - if a file is mentioned, read it completely
  2. Gather Historical Context: Spawn rpi:thoughts-analyzer with ticket reference, title, description, and acceptance criteria.

    DO NOT proceed to step 3 until this subagent returns. Its output is required input for step 3.

Read the full file on GitHub · 459 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. 4d ago First seen · 459 lines · 9 tokens per session scan A 8f064d7f7cca

Subscribe to this mod's changes

create_plan is a command published in the GitHub repository hoblin/claude-ruby-marketplace (37 stars, last pushed 25d ago), licensed MIT. It adds 9 tokens to every session and 3,358 once invoked, about $0.0000 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.