plan

plan is a command for coding agents from niels-emmer/myace. It costs 31 tokens per session (455 once invoked), scanned A, original, MIT.

A planning command that turns a nontrivial coding task into a short, checkable plan before implementation begins.

In plain words
What is it for?
It helps plan feature work, infrastructure changes, migrations, and other tasks that need explicit steps and review.
Why use it?
It exposes misunderstandings, risks, and design choices early, while requiring human approval before changes are applied.

Command

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/niels-emmer/myace/plan
Clone the repo
git clone --depth 1 https://github.com/niels-emmer/myace

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 plan

README.md
[![agentmods](https://agentmods.dev/badge/commands/niels-emmer/myace/plan.svg)](https://agentmods.dev/commands/niels-emmer/myace/plan)
Your own site
<a href="https://agentmods.dev/commands/niels-emmer/myace/plan"><img src="https://agentmods.dev/badge/commands/niels-emmer/myace/plan.svg" alt="Measured on agentmods" height="20"></a>
Per session 31 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 455 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. 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 5.1 $0.00031 $0.00455
Opus 5 $0.00015 $0.00228
Sonnet 5 $0.00006 $0.00091
Haiku 4.5 $0.00003 $0.00046

Measured yesterday against content hash 23549eaae113, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

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 yesterday.

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.

collections/base/devops-engineer/commands/plan.md · 14 lines

What it actually says

  1. Restate the task in one or two sentences, in your own words — confirms you've understood what's actually being asked before designing around a misreading of it.
  2. Read the project's memory files (docs/memory/core-principles.md, docs/memory/workflow.md, and the tail of docs/memory/decisions.md for anything relevant) so the plan fits existing conventions and doesn't repeat a decision already made and logged.
  3. Decide whether this task needs a design pass — a new module or service boundary, a change to identity or networking, a state migration, or a genuinely ambiguous approach all qualify. If it does, write the short design note the architecture-review skill describes before continuing.
  4. Break the task into an ordered list of concrete, checkable steps — not vague phases. Each step should be small enough to verify on its own (e.g., "add the Terraform module," "update the security group," "add the pipeline stage," not "implement the feature").
  5. Identify what could go wrong or turn out to be bigger than expected — a step that touches production infrastructure, a state migration without an obvious rollback, a security-relevant boundary — and flag those specifically rather than letting them look like routine steps.
  6. Set up tracking for the plan per the plan-tracking skill so progress stays visible as steps complete.
  7. Share the plan before starting implementation if the task is large, ambiguous, or touches something risky enough that the user would want a chance to redirect before code gets written; otherwise proceed straight into the builder agent's work with the plan as the checklist.
  8. Before any apply/deploy/destroy, show the plan/diff and get explicit human approval — never run a state-changing command and explain afterward.
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. yesterday First seen · 14 lines · 31 tokens per session scan A 23549eaae113

Subscribe to this mod's changes

plan is a command published in the GitHub repository niels-emmer/myace (1 stars, last pushed 4d ago), licensed MIT. It adds 31 tokens to every session and 455 once invoked, about $0.0002 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.