What is simple-gemini?

A collaborative workflow that uses the Gemini command-line tool to write Markdown documentation and test code, then uses Codex to review generated tests.

Use it when you explicitly want Gemini to create documentation or test files, with Codex checking the resulting test code.

It gives documentation and test writing a defined process with a separate review step for tests. The workflow runs these writing tasks inside Gemini sessions launched through WSL.

simple-gemini — Skill for Claude Code and Codex by VCnoC

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 VCnoC/Claude-Code-Zen-mcp-Skill-Work --skill simple-gemini

Clone the repo

git clone --depth 1 https://github.com/VCnoC/Claude-Code-Zen-mcp-Skill-Work

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/vcnoc/claude-code-zen-mcp-skill-work/simple-gemini/github.svg)](https://agentmods.dev/skills/vcnoc/claude-code-zen-mcp-skill-work/simple-gemini)

Your own site

<a href="https://agentmods.dev/skills/vcnoc/claude-code-zen-mcp-skill-work/simple-gemini"><img src="https://agentmods.dev/badge/skills/vcnoc/claude-code-zen-mcp-skill-work/simple-gemini/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/skills/vcnoc/claude-code-zen-mcp-skill-work/simple-gemini"><img src="https://agentmods.dev/badge/skills/vcnoc/claude-code-zen-mcp-skill-work/simple-gemini.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 137 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 6,955 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.

Model	Per session	Once invoked
Fable 5.1	$0.00137	$0.06955
Opus 5.5	$0.00055	$0.02782
Sonnet 5.5	$0.00027	$0.01391
Haiku 4.5	$0.00014	$0.00696

Measured 2mo ago against content hash 8312d7e983bf, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

simple-gemini 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 2mo 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/simple-gemini/SKILL.md · 897 lines

How it starts

The opening of the file, as written. The whole thing — 897 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Gemini Documentation & Test Writer

Overview

This skill provides a collaborative writing workflow where gemini CLI (launched via zen mcp's clink tool as a WSL command gemini) serves as a specialist writer for markdown documentation and test code. All writing operations are executed within the gemini CLI session environment, while the main Claude model handles context gathering, user interaction, and test execution. For test code, codex CLI (also launched via clink as WSL command codex) performs quality validation after gemini completes the initial writing.

Technical Architecture:

zen-mcp clink: Acts as the bridge to launch CLI tools in WSL environment
gemini CLI session: Opened via gemini command in WSL, where all document/test writing happens
codex CLI session: Opened via codex command in WSL for code review tasks
Conversation context: Maintained via continuation_id across CLI sessions

Division of Responsibilities:

Gemini CLI Session (in WSL): Specialist writer for .md documents and test code, all writing executed inside this CLI environment
Main Claude Model: Context gathering, CLI invocation orchestration, outline approval, test execution, final review
Codex CLI Session (in WSL): Test code quality validation and correction, review executed inside this CLI environment
User: Approval of outlines and final review (in Interactive Mode) or information recipient (in Automated Mode)

When to Use This Skill

Trigger this skill when the user or main model requests:

"Use gemini to write test files"
"Use gemini to write documentation"
"Generate related test files"
"Generate an explanatory document"
Commands from Claude or codex to write documentation
Any request to create .md documentation or test code files

Operation Mode (automation_mode - READ FROM SSOT)

automation_mode definition and constraints: See CLAUDE.md「📚 共享概念速查」

This skill's role: Skill Layer (read-only), read from context [AUTOMATION_MODE: true/false]

false → Interactive: Requires user confirmation (outline, review, test corrections)
true → Automated: Autonomous decisions, escalate only for critical issues, record to auto_log.md

Read the full file on GitHub · 897 lines

Files

What ships with it

15 files 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.

2mo ago First seen · 897 lines · 137 tokens per session scan A 8312d7e983bf

Subscribe to this mod's changes

simple-gemini is a skill published in the GitHub repository VCnoC/Claude-Code-Zen-mcp-Skill-Work (118 stars, last pushed 10mo ago), licensed Apache-2.0. It adds 137 tokens to every session and 6,955 once invoked, about $0.0005 per session on Opus 5.5. 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.

Testing Writing and docs

simple-gemini next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
simple-geminiVCnoC/Claude-Code-Zen-mcp-Skill-Work	Skill	118	10mo ago	Apache-2.0	A	137	Claude Code, Codex
imagegenopenai/codex	Skill	133k	yesterday	Apache-2.0	A	113	Codex
playwright-climicrosoft/playwright	Skill	99k	yesterday	Apache-2.0	A	19	Claude Code
local-ai-agentsmicrosoft/ai-agents-for-beginners	Skill	79k	4d ago	MIT	A	200	Claude Code, Codex
systematic-debuggingobra/superpowers	Skill	313k	3d ago	MIT	A	21	Claude Code
next-cache-components-adoptionvercel/next.js	Skill	143k	yesterday	MIT	A	95	Claude Code
next-partial-prefetching-adoptionvercel/next.js	Skill	143k	yesterday	MIT	A	103	Claude Code