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Gemini CLI Guide by tomevault-io — Agent Skill

Name: Gemini CLI Guide
Author: tomevault-io

Gemini CLI Guide

Complete Gemini CLI usage guide. Use when users ask about Gemini CLI commands, flags, options, configuration, or usage patterns. Triggers on questions like "how to use gemini command", "gemini cli flags", "how to configure gemini", "gemini slash commands", "gemini authentication", "GEMINI.md file", or requests for Gemini CLI examples. Use when this capability is needed.

tomevault-io 7e028a3 2 files · 4.3 KB Updated Sep 17, 2026

File contents

Gemini CLI Reference

Quick reference for Gemini CLI commands and configuration.

Installation

Method	Command
NPX (no install)	`npx @google/gemini-cli`
NPM	`npm install -g @google/gemini-cli`
Homebrew	`brew install gemini-cli`
MacPorts	`sudo port install gemini-cli`

Authentication

Method	Setup
Google OAuth	Run `gemini` and select "Login with Google"
API Key	Set `GEMINI_API_KEY` env var (get from aistudio.google.com/apikey)
Vertex AI	Set `GOOGLE_API_KEY` + `GOOGLE_GENAI_USE_VERTEXAI=true`

Basic Commands

Command	Description
`gemini`	Start interactive REPL
`gemini "query"`	Start REPL with initial prompt
`gemini -p "query"`	One-shot query (pipe mode)

Common Flags

Flag	Description
`-p, --prompt <text>`	One-shot query mode (pipe mode)
`-i, --prompt-interactive`	Interactive prompt mode
`--input <text>`	Input for the prompt
`-m, --model`	Specify model
`-s, --sandbox`	Enable sandbox mode
`--approval-mode`	Set approval mode (default/auto_edit/plan/yolo)
`--output-format`	Output format (text/json/stream-json)
`-d, --debug`	Enable debug mode
`-r, --resume`	Resume previous conversation
`--list-sessions`	List available sessions
`--delete-session <id>`	Delete a specific session
`--allowed-tools <list>`	Specify tools that bypass confirmation
`-e, --extensions <names>`	Specify extensions to use
`-l, --list-extensions`	List available extensions
`--allowed-mcp-server-names`	Configure MCP servers
`--screen-reader`	Screen reader optimization
`--color` / `--no-color`	Control colored output

Slash Commands

Category	Commands
Session	`/chat`, `/clear`, `/resume`, `/rewind`, `/save`, `/quit`
Config	`/settings`, `/auth`, `/theme`, `/vim`, `/model`
Tools	`/tools`, `/mcp`, `/hooks`, `/skills`, `/extensions`
Memory	`/memory`, `/compress`
Context	`/directory`, `/restore`
Workflow	`/bug`, `/copy`, `/editor`, `/init`, `/setup-github`, `/export`
Info	`/help`, `/about`, `/docs`, `/stats`, `/privacy`, `/introspect`, `/version`
Shell	`/shells` (or `/bashes`)
IDE	`/ide`, `/terminal-setup`, `/policies`

Special Syntax

Syntax	Description
`@path`	Include file/directory in context
`!command`	Execute shell command

Configuration Files

Location	Scope
`~/.gemini/settings.json`	Global settings
`.gemini/settings.json`	Project settings
`GEMINI.md`	Project instructions

Detailed References

commands.md - All slash, @ and ! commands
flags.md - All CLI flags by category
configuration.md - Settings, env vars, MCP config
examples.md - Common usage examples

Source: MomoChenisMe/awesome-momochenisme-skills — distributed by TomeVault.

---name: gemini-cli-guidedescription: Complete Gemini CLI usage guide. Use when users ask about Gemini CLI commands, flags, options, configuration, or usage patterns. Triggers on questions like "how to use gemini command", "gemini cli flags", "how to configure gemini", "gemini slash commands", "gemini authentication", "GEMINI.md file", or requests for Gemini CLI examples. Use when this capability is needed.---# Gemini CLI ReferenceQuick reference for Gemini CLI commands and configuration.## Installation| Method | Command ||--------|---------|| NPX (no install) | `npx @google/gemini-cli` || NPM | `npm install -g @google/gemini-cli` || Homebrew | `brew install gemini-cli` || MacPorts | `sudo port install gemini-cli` |## Authentication| Method | Setup ||--------|-------|| Google OAuth | Run `gemini` and select "Login with Google" || API Key | Set `GEMINI_API_KEY` env var (get from aistudio.google.com/apikey) || Vertex AI | Set `GOOGLE_API_KEY` + `GOOGLE_GENAI_USE_VERTEXAI=true` |## Basic Commands| Command | Description ||---------|-------------|| `gemini` | Start interactive REPL || `gemini "query"` | Start REPL with initial prompt || `gemini -p "query"` | One-shot query (pipe mode) |## Common Flags| Flag | Description ||------|-------------|| `-p, --prompt <text>` | One-shot query mode (pipe mode) || `-i, --prompt-interactive` | Interactive prompt mode || `--input <text>` | Input for the prompt || `-m, --model` | Specify model || `-s, --sandbox` | Enable sandbox mode || `--approval-mode` | Set approval mode (default/auto_edit/plan/yolo) || `--output-format` | Output format (text/json/stream-json) || `-d, --debug` | Enable debug mode || `-r, --resume` | Resume previous conversation || `--list-sessions` | List available sessions || `--delete-session <id>` | Delete a specific session || `--allowed-tools <list>` | Specify tools that bypass confirmation || `-e, --extensions <names>` | Specify extensions to use || `-l, --list-extensions` | List available extensions || `--allowed-mcp-server-names` | Configure MCP servers || `--screen-reader` | Screen reader optimization || `--color` / `--no-color` | Control colored output |## Slash Commands| Category | Commands ||----------|----------|| Session | `/chat`, `/clear`, `/resume`, `/rewind`, `/save`, `/quit` || Config | `/settings`, `/auth`, `/theme`, `/vim`, `/model` || Tools | `/tools`, `/mcp`, `/hooks`, `/skills`, `/extensions` || Memory | `/memory`, `/compress` || Context | `/directory`, `/restore` || Workflow | `/bug`, `/copy`, `/editor`, `/init`, `/setup-github`, `/export` || Info | `/help`, `/about`, `/docs`, `/stats`, `/privacy`, `/introspect`, `/version` || Shell | `/shells` (or `/bashes`) || IDE | `/ide`, `/terminal-setup`, `/policies` |## Special Syntax| Syntax | Description ||--------|-------------|| `@path` | Include file/directory in context || `!command` | Execute shell command |## Configuration Files| Location | Scope ||----------|-------|| `~/.gemini/settings.json` | Global settings || `.gemini/settings.json` | Project settings || `GEMINI.md` | Project instructions |## Detailed References- [commands.md](references/commands.md) - All slash, @ and ! commands- [flags.md](references/flags.md) - All CLI flags by category- [configuration.md](references/configuration.md) - Settings, env vars, MCP config- [examples.md](references/examples.md) - Common usage examples---> Source: [MomoChenisMe/awesome-momochenisme-skills](https://github.com/MomoChenisMe/awesome-momochenisme-skills) — distributed by [TomeVault](https://tomevault.io).

Frequently asked questions