plan

plan is a skill for Claude Code, Codex from eiler2005/ai-tab-optimizer. It costs 20 tokens per session (196 once invoked), scanned A, original, MIT.

A read-only implementation-planning helper that examines project files and turns a feature request into a structured plan. The plan lists affected files, code patterns, tasks, trade-offs, and testing steps.

In plain words
What is it for?
Use it to plan multi-file features, map dependencies between app layers, define acceptance checks, and break large changes into smaller tasks.
Why use it?
It clarifies the work before coding begins, especially when a change spans several parts of a project. It also prevents implementation from starting before the plan is reviewed and approved.

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/eiler2005/ai-tab-optimizer/plan
Any agent
npx skills add eiler2005/ai-tab-optimizer --skill plan
Clone the repo
git clone --depth 1 https://github.com/eiler2005/ai-tab-optimizer

Made for: Claude Code, Codex.

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/skills/eiler2005/ai-tab-optimizer/plan.svg)](https://agentmods.dev/skills/eiler2005/ai-tab-optimizer/plan)
Your own site
<a href="https://agentmods.dev/skills/eiler2005/ai-tab-optimizer/plan"><img src="https://agentmods.dev/badge/skills/eiler2005/ai-tab-optimizer/plan.svg" alt="Measured on agentmods" height="20"></a>
Per session 20 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 196 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 $0.00020 $0.00196
Opus 5 $0.00010 $0.00098
Sonnet 5 $0.00004 $0.00039
Haiku 4.5 $0.00002 $0.00020

Measured 3d ago against content hash e5dc86e9101e, 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 3d 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.

.claude/skills/plan/SKILL.md · 20 lines

What it actually says

Create an implementation plan for: $ARGUMENTS

Steps:

  1. Check if a research document exists in docs/research/ for this topic — read it if so
  2. Read PROJECT.md and MVP_FEATURES.md for product context
  3. Read all relevant source files to understand current implementation
  4. Read docs/templates/plan.md for the output format
  5. Create a plan document at docs/plans/.md following the template
  6. Include: specific file paths, code snippets, task checklist with - [ ] markers, trade-offs, testing strategy
  7. Share reference implementations from existing code when relevant

Do NOT write any implementation code. Only create the plan document. Wait for the user to review, annotate, and approve the plan before implementing.

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. 3d ago First seen · 20 lines · 20 tokens per session scan A e5dc86e9101e

Subscribe to this mod's changes

plan is a skill published in the GitHub repository eiler2005/ai-tab-optimizer (3 stars, last pushed 3mo ago), licensed MIT. It adds 20 tokens to every session and 196 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 2026-08-31.

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