What is gemini-cli-skillz GEMINI.md?

Instructions for using Agent Skills in Gemini CLI, a command-line tool for working with Gemini. Skills are folders containing instructions that the tool discovers and makes available when relevant.

Creating or organising skill folders, writing SKILL.md files, configuring the skills directory, and understanding automatic skill invocation.

It explains how skills are structured, found, loaded, and configured so developers can troubleshoot or extend the setup.

How intellectronica/gemini-cli-skillz configures Gemini CLI

Reuse

Borrowing it

Nothing to install: this file belongs to intellectronica/gemini-cli-skillz. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/intellectronica/gemini-cli-skillz/main/GEMINI.md

Clone the repo

git clone --depth 1 https://github.com/intellectronica/gemini-cli-skillz

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/instructions/intellectronica/gemini-cli-skillz/gemini-md/github.svg)](https://agentmods.dev/instructions/intellectronica/gemini-cli-skillz/gemini-md)

Your own site

<a href="https://agentmods.dev/instructions/intellectronica/gemini-cli-skillz/gemini-md"><img src="https://agentmods.dev/badge/instructions/intellectronica/gemini-cli-skillz/gemini-md/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/instructions/intellectronica/gemini-cli-skillz/gemini-md"><img src="https://agentmods.dev/badge/instructions/intellectronica/gemini-cli-skillz/gemini-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 412 This file is loaded in full into every session.

When invoked 412 The same file — it is already loaded in full.

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	$0.00412	$0.00412
Opus 5.5	$0.00165	$0.00165
Sonnet 5.5	$0.00082	$0.00082
Haiku 4.5	$0.00041	$0.00041

Measured 2mo ago against content hash a8107fc13231, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

gemini-cli-skillz GEMINI.md 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.

GEMINI.md · 62 lines

What it actually says

Agent Skills for Gemini CLI

This extension enables Anthropic-style Agent Skills in Gemini CLI via the skillz MCP server.

How It Works

Skills are directories containing SKILL.md files with YAML frontmatter. The skillz MCP server:

Discovers all SKILL.md files in your skills directory
Registers each skill as an MCP tool
Returns skill instructions and absolute paths when invoked
Enables progressive disclosure (load only what's needed)

Using Skills

Skills are invoked automatically when relevant to your task. You don't need to explicitly call them.

When a skill is invoked:

You receive the full SKILL.md content
Absolute paths to the skill's base directory are provided
Follow the instructions in the skill
Load additional resource files only when referenced

Skills Directory

Skills are loaded from the directory configured during extension installation (default: ~/.skillz).

To change the directory, edit ~/.gemini/extensions/skillz/.env and set SKILLS_PATH=/your/path.

Skill Format

Each skill is a directory containing:

SKILL.md — Entry point with YAML frontmatter and markdown instructions
resources/ — Optional supporting files
scripts/ — Optional executable code

Example SKILL.md:

---
name: my-skill
description: What this skill does
---

# Skill Instructions

When invoked, do X, Y, Z...

Finding Skills

Anthropic skills repository: https://github.com/anthropics/skills
Community skills: Search GitHub for "claude skills" or "SKILL.md"

MCP Commands

/mcp list — See all available skills
/mcp — View MCP server status

More Information

skillz MCP server: https://github.com/intellectronica/skillz
Anthropic Skills docs: https://docs.claude.com/en/docs/agents-and-tools/agent-skills

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 · 62 lines · 412 tokens per session scan A a8107fc13231

Subscribe to this mod's changes

gemini-cli-skillz GEMINI.md is an instructions file published in the GitHub repository intellectronica/gemini-cli-skillz (97 stars, last pushed 11mo ago), licensed MIT. It adds 412 tokens to every session, about $0.0016 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.

Building agents

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gemini-cli-skillz: Instructions file for Gemini CLI