think-twice

think-twice is a skill for Claude Code from albertobarnabo/lazy-cat. It costs 158 tokens per session (1,384 once invoked), scanned A, original, MIT.

A checklist that makes the coding agent pause before choosing an implementation approach and look for a simpler existing solution.

In plain words
What is it for?
Use it when creating fixtures or datasets, designing a complex implementation, or solving a problem that may already have a reusable solution.
Why use it?
It helps avoid generating unnecessary data, writing custom code for problems already covered by standard libraries or public APIs, and adding needless work.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the lazy-cat plugin — 2 skills, 2 commands shipped together

Good fit Use it when creating fixtures or datasets, designing a complex implementation, or solving a problem that may already have a reusable solution.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/albertobarnabo/lazy-cat/think-twice
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 albertobarnabo/lazy-cat --skill think-twice
Clone the repo
git clone --depth 1 https://github.com/albertobarnabo/lazy-cat

Made for: Claude Code.

Or install lazy-cat, the plugin that ships this one along with the rest of its 2 skills, 2 commands.

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 think-twice

README.md
[![agentmods](https://agentmods.dev/badge/skills/albertobarnabo/lazy-cat/think-twice/github.svg)](https://agentmods.dev/skills/albertobarnabo/lazy-cat/think-twice)
Your own site
<a href="https://agentmods.dev/skills/albertobarnabo/lazy-cat/think-twice"><img src="https://agentmods.dev/badge/skills/albertobarnabo/lazy-cat/think-twice/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 think-twice

Your own site · 80×15
<a href="https://agentmods.dev/skills/albertobarnabo/lazy-cat/think-twice"><img src="https://agentmods.dev/badge/skills/albertobarnabo/lazy-cat/think-twice.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 158 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,384 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.
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 $0.00158 $0.01384
Opus 5 $0.00079 $0.00692
Sonnet 5 $0.00032 $0.00277
Haiku 4.5 $0.00016 $0.00138

Measured 10d ago against content hash 5da80bbd424d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

think-twice 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.

skills/think-twice/SKILL.md · 147 lines

How it starts

The opening of the file, as written. The whole thing — 147 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Lazy Agent — Work Smarter, Not Harder

"A great engineer is a lazy engineer. They find the clever shortcut." — Steve Jobs

This skill rewires Claude's default instinct. Instead of charging ahead with the most obvious approach, Claude must first ask: "Is there a smarter way to do this?"

Productive laziness is not about doing less. It's about never doing more than necessary.


When NOT to run this checklist

Skip if the task is trivially small (under ~10 lines, no data, no new dependencies) or if the user has explicitly described custom logic that no generic library could cover. In those cases, proceed directly.

Also: never hand-roll cryptography or security primitives. "Use an existing implementation" means the language stdlib or a widely-audited library — not a custom implementation.


The Lazy Check

Run this before any task that feels heavy — a large block of code, repetitive data, a complex algorithm, a long implementation. Stop at the first question that reveals a better path.

1. Am I solving the right problem?

Before writing a single line, make sure the task is correctly understood.

  • What is the user actually trying to achieve?
  • Am I about to solve a symptom instead of the root cause?
  • Would a 2-sentence clarification save 200 lines of code?

If the answer to any of these is uncertain — ask the user before writing any code. One targeted question now saves a full redo later.

2. Is there an existing solution?

Someone has almost certainly solved this before.

  • Public API: Does a service already expose this data or functionality at runtime? Prefer it — no maintenance, always up to date.
  • Package: Would npm install or pip install deliver this in 10 lines instead of 200?
  • Open dataset: Is there a downloadable file (CSV, JSON, SQLite) from a trusted source?
  • Standard library: Does the language's stdlib already cover this?

3. Am I doing too much?

Scope creep is the enemy of efficiency.

  • Does the user need all of this, or just a slice?
  • Am I precomputing everything when I could compute on demand?
  • Am I generating 100 cases when 3 examples would prove the point?
  • YAGNI: if it's not needed right now, don't build it.

Read the full file on GitHub · 147 lines

Files

What ships with it

1 file 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. 10d ago First seen · 147 lines · 158 tokens per session scan A 5da80bbd424d

Subscribe to this mod's changes

think-twice is a skill published in the GitHub repository albertobarnabo/lazy-cat (50 stars, last pushed 3mo ago), licensed MIT. It adds 158 tokens to every session and 1,384 once invoked, about $0.0008 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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