plan

A planning method for medium-to-large software changes. It gathers project context and records a phased implementation plan without writing the code.

In plain words
What is it for?
Use it to investigate a codebase, identify relevant skills, document technical phases, and save an implementation plan for later work.
Why use it?
It turns broad feature requests, multi-file refactors, and architectural changes into an ordered set of decisions and tasks. It also avoids applying a full planning process to small fixes.

Skill for Claude CodeCodex

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 skills/poteto/noodle/plan
Any agent
npx skills add poteto/noodle --skill plan
Clone the repo
git clone --depth 1 https://github.com/poteto/noodle

Made for: Claude Code, Codex.

Per session 61 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,437 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 $0.00061 $0.01437
Opus 5 $0.00030 $0.00718
Sonnet 5 $0.00012 $0.00287
Haiku 4.5 $0.00006 $0.00144

Measured 2d ago against content hash f429f980350f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 2d 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.

.agents/skills/plan/SKILL.md · 128 lines

How it starts

The opening of the file, as written. The whole thing — 128 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Plan

Produce implementation plans grounded in project principles. Write plans to brain/plans/. Do NOT implement anything — the plan is the deliverable.

Autonomous Session Mode

When this skill runs in a non-interactive Noodle execution session (for example Cook, Oops, or Repair):

  • Skip Step 2 (AskUserQuestion) — the scope is fully defined in the initial prompt.
  • Skip Step 6's pause — write the plan, commit it, emit stage_yield (see Step 6), and end the session. Do not wait for human review.
  • Step 4 (find-skills) — install skills autonomously without confirmation.

All other steps proceed normally.

Use Tasks to track progress. Create a task for each step (TaskCreate), mark each in_progress when starting and completed when done (TaskUpdate). Check TaskList after completing each step.

Step 0 — Triage Complexity

Before running the full planning workflow, assess whether this task actually needs a plan:

Trivially small (1-2 files, obvious approach): Tell the user this task doesn't need a plan and suggest implementing directly without the plan skill. Stop here — do not implement.

Needs planning (proceed to Step 1):

  • The change spans 3+ files or introduces new architecture
  • There are multiple valid approaches and the user should weigh in
  • The task has unclear scope or cross-cutting concerns
  • The user explicitly asks for a plan

Step 1 — Load Principles

Read brain/principles.md. Follow every [[wikilink]] and read each linked principle file. These principles govern all plan decisions — cite them by name in the plan overview and phase files.

Do NOT skip this. Do NOT use memorized principle content — always read fresh. The self-check in Step 5b will verify citations exist.

Step 2 — Define Scope and Constraints

Use AskUserQuestion to resolve ambiguity before exploring the codebase:

  • What is in scope vs explicitly out of scope?
  • Are there constraints (dependencies, platform requirements, existing patterns to preserve)?
  • What does "done" look like?

Read the full file on GitHub · 128 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 2d ago First seen · 128 lines · 61 tokens per session scan A f429f980350f

Subscribe to this mod's changes

plan is a skill published in the GitHub repository poteto/noodle (267 stars, last pushed 5mo ago), licensed MIT. It adds 61 tokens to every session and 1,437 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.

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