idea-check

idea-check is a command for Claude Code from fivetaku/idea-lab. It costs 99 tokens per session (533 once invoked), scanned A, original, MIT.

A command for deciding whether one idea meets a person's work criteria. It is intended for questions such as whether an idea is suitable or whether a proposed direction should proceed.

In plain words
What is it for?
Use it to assess a single idea, while using separate commands for starting ideation, recording the result or drafting a proposal.
Why use it?
It gives a focused decision step for one idea instead of starting a full ideation process or writing a plan. The input does not describe the criteria used.

Command for Claude Code

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/fivetaku/idea-lab/idea-check
Clone the repo
git clone --depth 1 https://github.com/fivetaku/idea-lab

Made for: Claude Code.

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 idea-check

README.md
[![agentmods](https://agentmods.dev/badge/commands/fivetaku/idea-lab/idea-check.svg)](https://agentmods.dev/commands/fivetaku/idea-lab/idea-check)
Your own site
<a href="https://agentmods.dev/commands/fivetaku/idea-lab/idea-check"><img src="https://agentmods.dev/badge/commands/fivetaku/idea-lab/idea-check.svg" alt="Measured on agentmods" height="20"></a>
Per session 99 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 533 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00099 $0.00533
Opus 5 $0.00049 $0.00267
Sonnet 5 $0.00020 $0.00107
Haiku 4.5 $0.00010 $0.00053

Measured 4d ago against content hash be653a716fd8, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

idea-check 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 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.

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/commands/idea-check.md · 44 lines

What it actually says

/idea-check

아이디어 하나를 10-criteria/my-criteria.md에 대조해 진행·보류·기각으로 판정합니다.

실행 흐름

Step 1: 중복 확인

40-ideas/backlog.md에 같거나 비슷한 아이디어가 있는지 먼저 확인하고, 있으면 그 상태(진행·보류·기각)와 사유부터 말합니다.

Step 2: 기준 대조

기준을 하나씩 대조합니다. 걸리는 기준이 있으면 어느 지점이 어느 기준에 걸리는지 지목합니다. (기준 문서가 비어 있으면 /setup을 먼저 하자고 안내합니다.) 20-knowledge/_index.md·30-research/에 판단에 쓸 근거가 있으면 해당 파일만 읽고 인용합니다.

Step 3: 판정과 대안

  • 기각: 사유(기준 번호) + 이 아이디어를 살리려면 무엇을 바꿔야 하는지 1가지
  • 보류: 사유 + 재검토 조건·시점
  • 진행: 다음 액션 1개 (기획서로 갈 아이디어면 /draft 안내)

동의할 근거가 없는데 동의하지 않습니다. 반대할 때는 반드시 기준 번호를 댑니다.

Step 4: 기록은 미루기

이 단계에서 파일을 고치지 않습니다. 판정 결과는 아이데이션이 끝날 때 /ideation-wrap에서 한 번에 반영합니다. (단, 사용자가 "지금 백로그에 넣어줘"라고 명시하면 바로 반영합니다.)

출력 형식

## 판정: 진행 / 보류 / 기각
- 근거: 기준 N — (걸린 지점)
- 대안: ...

참조

  • 10-criteria/my-criteria.md
  • 40-ideas/backlog.md
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 · 44 lines · 99 tokens per session scan A be653a716fd8

Subscribe to this mod's changes

idea-check is a command published in the GitHub repository fivetaku/idea-lab (2 stars, last pushed yesterday), licensed MIT. It adds 99 tokens to every session and 533 once invoked, about $0.0005 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.