A short add-on for reducing mistakes in code, pipelines, and AI agents. The description does not explain how it does this.

The available information is too limited to name a concrete job beyond general mistake prevention.

Its specific problem-solving steps and limits are not provided.

poka-yoke — Plugin for Gemini CLI by rainmanjam

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.

Clone the repo

git clone --depth 1 https://github.com/rainmanjam/poka-yoke

Made for: Gemini CLI.

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.

README.md

[![agentmods](https://agentmods.dev/badge/plugins/rainmanjam/poka-yoke/gemini-extension/github.svg)](https://agentmods.dev/plugins/rainmanjam/poka-yoke/gemini-extension)

Your own site

<a href="https://agentmods.dev/plugins/rainmanjam/poka-yoke/gemini-extension"><img src="https://agentmods.dev/badge/plugins/rainmanjam/poka-yoke/gemini-extension/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.

Your own site · 80×15

<a href="https://agentmods.dev/plugins/rainmanjam/poka-yoke/gemini-extension"><img src="https://agentmods.dev/badge/plugins/rainmanjam/poka-yoke/gemini-extension.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

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.

Security

Grade A, and why

poka-yoke 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.

The scan reads gemini-extension.json. This mod also ships 11 executable files (scripts/check_action_pins.py, scripts/check_cited_rules.py, scripts/fanout.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

gemini-extension.json · 7 lines

What it actually says

{
  "name": "poka-yoke",
  "description": "Mistake-proof your code, your pipeline, and your agents.",
  "version": "0.2.0",
  "contextFileName": "GEMINI.md"
}

Files

What ships with it

11 files beside gemini-extension.json 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.

2d ago First seen · 7 lines scan A bfbb3d37fd56

Subscribe to this mod's changes

poka-yoke is a plugin published in the GitHub repository rainmanjam/poka-yoke (24 stars, last pushed 2d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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 2026-10-15.

agent-skills claude-code-plugin defensive-programming error-prevention

han-communication

Foundational communication plugin for the Han suite. Owns the canonical readability standard, the writing-voice profile, and the explanation standard for talking to a reader who will not implement the work, plus the readability-guidance skill that surfaces the first two into a calling skill's own context for in-voice…

testdouble/han · not measured

handbook-agent-spec-kit

Spec-driven development workflow system with structured phases: Requirements → Design → Tasks → Implementation.

NikiforovAll/claude-code-rules · not measured

go-ultimate

Opinionated Go development skill — architecture, conventions, production readiness, repo/CI hygiene, review, and MCP/agent patterns.

Djarvur/go-ultimate · not measured

rails-consultant

A collection of skills for Rails development and consulting, with an emphasis on learning, communication, and client success.

thoughtbot/rails-consultant · not measured

deadeye

Fits model, effort, and context to each task via a deterministic policy kernel behind Claude Code hooks. He doesn't waste shots.

deepaksinghcs14/deadeye-cc · not measured

looptimal

Turns an objective into a delivered, VERIFIED OUTCOME: frames a hash-pinned sealed acceptance suite, designs the right loop (the loop-design wizard, formerly LoopPrint), war-games it forward, executes with dynamic domain-expert sub-agents (maker != checker), and gates completion on a separate verifier re-running the…

Renn-Labs/Looptimal · not measured