idea-killer

idea-killer is an agent for Codex from c0x12c/ai-toolkit. It costs 31 tokens per session (507 once invoked), scanned A, original, no licence file.

A critical agent that looks for flaws in a product or business idea before the market exposes them.

In plain words
What is it for?
Stress-testing an idea, finding potential problems, and deciding whether the concept needs changes before launch.
Why use it?
It helps reveal weaknesses and risks early, while changes are still easier to make.

Agent for Codex

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 agents/c0x12c/ai-toolkit/idea-killer
Clone the repo
git clone --depth 1 https://github.com/c0x12c/ai-toolkit

Made for: 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 idea-killer

README.md
[![agentmods](https://agentmods.dev/badge/agents/c0x12c/ai-toolkit/idea-killer.svg)](https://agentmods.dev/agents/c0x12c/ai-toolkit/idea-killer)
Your own site
<a href="https://agentmods.dev/agents/c0x12c/ai-toolkit/idea-killer"><img src="https://agentmods.dev/badge/agents/c0x12c/ai-toolkit/idea-killer.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 507 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 $0.00031 $0.00507
Opus 5 $0.00015 $0.00253
Sonnet 5 $0.00006 $0.00101
Haiku 4.5 $0.00003 $0.00051

Measured 3d ago against content hash 52d6ea5a8577, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

idea-killer 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.

.codex/agents/idea-killer.md · 73 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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 · 73 lines · 31 tokens per session scan A 52d6ea5a8577

Subscribe to this mod's changes

idea-killer is an agent published in the GitHub repository c0x12c/ai-toolkit (97 stars, last pushed 2mo ago), with no licence file. It adds 31 tokens to every session and 507 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 2026-08-30.