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.
npx agentmods add instructions/intellectronica/gemini-cli-skillz/gemini-mdgit clone --depth 1 https://github.com/intellectronica/gemini-cli-skillzWrote 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.
[](https://agentmods.dev/instructions/intellectronica/gemini-cli-skillz/gemini-md)<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="Measured on agentmods" height="20"></a>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 | $0.00412 | $0.00412 |
| Opus 5 | $0.00206 | $0.00206 |
| Sonnet 5 | $0.00082 | $0.00082 |
| Haiku 4.5 | $0.00041 | $0.00041 |
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 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.
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
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.
- 4d ago First seen · 62 lines · 412 tokens per session scan A a8107fc13231
gemini-cli-skillz GEMINI.md is an instructions file published in the GitHub repository intellectronica/gemini-cli-skillz (97 stars, last pushed 9mo ago), licensed MIT. It adds 412 tokens to every session, about $0.0021 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.
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