How do I install the Gemini skill?

Run npx skillmds@latest add tomevault-io/gemini-39 in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Gemini safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Gemini?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Gemini free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Gemini?

tomevault-io (@tomevault-io) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Gemini by tomevault-io — Agent Skill

Name: Gemini
Author: tomevault-io

Gemini

Use when the user asks to run Gemini CLI for code review, plan review, or big context (>200k) processing. Ideal for comprehensive analysis requiring large context windows. Resolves the latest flagship model from the model registry.

tomevault-io Updated Sep 17, 2026

File contents

Gemini Skill

Priorities

Approval mode correctness > Model selection > Background execution safety

Model Registry

Load current models before executing — this overrides any model names in the tables below:

Glob(pattern: "**/sdlc/**/config/model-registry.md", path: "~/.claude/plugins") → Read result
Use gemini-flagship as the default model. Offer user gemini-fast for speed-critical tasks.
If registry load fails, fall back to the tables below.

Goal

Execute Gemini CLI for comprehensive code review, plan analysis, or large-context processing tasks. Ask user for model selection via AskUserQuestion. Choose approval mode based on execution context (yolo for background, default for interactive terminal only). Load CLI reference for detailed command patterns, troubleshooting, and use cases.

Constraints

NEVER use --approval-mode default in background or non-interactive shells (Claude Code tool calls). It hangs indefinitely waiting for user input.
ALWAYS use --approval-mode yolo for automated/background tasks or wrap with timeout: timeout 300 gemini ...
Ask user for model selection via AskUserQuestion before running commands.
After Gemini completes, inform user they can start a new session for follow-up analysis.

Model Selection (fallback — prefer registry)

Ask user which model to use via AskUserQuestion:

Model	Best for	Context window	Key features
`gemini-3-pro-preview`	Flagship: Complex reasoning, coding, agentic tasks	1M input / 64k output	Vibe coding, 76.2% SWE-bench, $2-4/M input
`gemini-3-flash`	Sub-second latency, speed-critical applications	1M input / 64k output	Distilled from 3 Pro, TPU-optimized
`gemini-2.5-pro`	Legacy: Strong all-around performance	1M input / 65k output	Thinking mode, mature stability
`gemini-2.5-flash`	Legacy: Cost-efficient, high-volume tasks	1M input / 65k output	Best price ($0.15/M), thinking mode
`gemini-2.5-flash-lite`	Legacy: Fastest processing, high throughput	1M input / 65k output	Maximum speed, minimal latency

These model names may be outdated. Always prefer model-registry.md values when available.

References

Load CLI reference for detailed command patterns, troubleshooting hung processes, and common use cases:

Glob(pattern: "**/sdlc/**/skills/gemini/references/gemini-cli-reference.md", path: "~/.claude/plugins") → Read result

Arguments

$ARGUMENTS

Converted and distributed by TomeVault — claim your Tome and manage your conversions.

---name: gemini-39description: Use when the user asks to run Gemini CLI for code review, plan review, or big context (>200k) processing. Ideal for comprehensive analysis requiring large context windows. Resolves the latest flagship model from the model registry.---# Gemini Skill## PrioritiesApproval mode correctness > Model selection > Background execution safety## Model RegistryLoad current models before executing — this overrides any model names in the tables below:- `Glob(pattern: "**/sdlc/**/config/model-registry.md", path: "~/.claude/plugins")` → Read result- Use `gemini-flagship` as the default model. Offer user `gemini-fast` for speed-critical tasks.- If registry load fails, fall back to the tables below.## GoalExecute Gemini CLI for comprehensive code review, plan analysis, or large-context processing tasks. Ask user for model selection via AskUserQuestion. Choose approval mode based on execution context (yolo for background, default for interactive terminal only). Load CLI reference for detailed command patterns, troubleshooting, and use cases.## Constraints- NEVER use `--approval-mode default` in background or non-interactive shells (Claude Code tool calls). It hangs indefinitely waiting for user input.- ALWAYS use `--approval-mode yolo` for automated/background tasks or wrap with timeout: `timeout 300 gemini ...`- Ask user for model selection via AskUserQuestion before running commands.- After Gemini completes, inform user they can start a new session for follow-up analysis.## Model Selection (fallback — prefer registry)Ask user which model to use via AskUserQuestion:| Model | Best for | Context window | Key features || --- | --- | --- | --- || `gemini-3-pro-preview` | Flagship: Complex reasoning, coding, agentic tasks | 1M input / 64k output | Vibe coding, 76.2% SWE-bench, $2-4/M input || `gemini-3-flash` | Sub-second latency, speed-critical applications | 1M input / 64k output | Distilled from 3 Pro, TPU-optimized || `gemini-2.5-pro` | Legacy: Strong all-around performance | 1M input / 65k output | Thinking mode, mature stability || `gemini-2.5-flash` | Legacy: Cost-efficient, high-volume tasks | 1M input / 65k output | Best price ($0.15/M), thinking mode || `gemini-2.5-flash-lite` | Legacy: Fastest processing, high throughput | 1M input / 65k output | Maximum speed, minimal latency |These model names may be outdated. Always prefer model-registry.md values when available.## ReferencesLoad CLI reference for detailed command patterns, troubleshooting hung processes, and common use cases:- `Glob(pattern: "**/sdlc/**/skills/gemini/references/gemini-cli-reference.md", path: "~/.claude/plugins")` → Read result## Arguments$ARGUMENTS---> Converted and distributed by [TomeVault](https://tomevault.io/claim/iamladi) — claim your Tome and manage your conversions.

Frequently asked questions