google-gemini /gemini-cli

An open-source AI agent that brings the power of Gemini directly into your terminal.

24 chapters · 1 hour · 13,054 words · 3 parts

google-gemini/gemini-cli · Skills Docs

Chapters by part — google-gemini/gemini-cli24 chapters of google-gemini/gemini-cli across 3 parts. Gemini is the largest at 21 chapters, 88% of the book.

Builtin2
Gemini21
Test Data1

Chapters by part — google-gemini/gemini-cli. 24 chapters of google-gemini/gemini-cli across 3 parts. Gemini is the largest at 21 chapters, 88% of the book.
Part	Chapters	Share
Builtin	2	8.3%
Gemini	21	88%
Test Data	1	4.2%

Part I

Builtin

2 chapters

Antigravity SupportUse when the user asks questions, seeks help, or requests instructions related to installing, setting up, or migrating to…2 min Skill CreatorGuide for creating effective skills.11 min

Part II

Gemini

21 chapters

Agent TuiMain Agents: Do NOT use this skill directly. If you need to test the TUI, invoke the tui_tester subagent.5 min Async PR ReviewTrigger this skill when the user wants to start an asynchronous PR review, run background checks on a PR, or check the status of a…2 min Behavioral EvalsGuidance for creating, running, fixing, and promoting behavioral evaluations.1 min CIA specialized skill for Gemini CLI that provides high-performance, fail-fast monitoring of GitHub Actions workflows and automated…2 min Code ReviewerUse this skill to review code. It supports both local changes (staged or working tree) and remote Pull Requests (by ID or URL).2 min Docs ChangelogGenerates and formats changelog files for a new release based on provided version and raw changelog data.4 min Docs WriterAlways use this skill when the task involves writing, reviewing, or editing files in the /docs directory or any .md files in the…5 min GitHub Issue CreatorUse this skill when asked to create a GitHub issue.1 min PR Address CommentsUse this skill if the user asks you to help them address GitHub PR comments for their current branch of the Gemini CLI.1 min PR CreatorUse this skill when asked to create a pull request (PR).2 min Review DuplicationUse this skill during code reviews to proactively investigate the codebase for duplicated functionality, reinvented wheels, or…3 min String ReviewerUse this skill when asked to review text and user-facing strings within the codebase.2 min Tui TesterExpert guidance for testing Gemini CLI behavior and visual output using terminal automation.1 min Code ExplorerExplores the repository to locate primary source files, coupled UI components, and test files for bug reports or feature requests.1 min EffortEstimates the implementation effort required to address the given issue.2 min QualityEvaluates whether a GitHub issue is spam, empty, needs more information, or is OK to proceed.1 min Spec GeneratorGenerates a structured Workable Spec JSON to guide a Developer Worker.1 min CritiqueExpertise in auditing and fixing repository scripts and GitHub Actions workflows to ensure technical robustness and security.5 min MemoryExpertise in maintaining persistent bot memory, synchronizing with previous sessions via the Task Ledger, and preserving decision…1 min MetricsExpertise in analyzing time-series repository health metrics, investigating root causes, and proposing proactive workflow…3 min PrsExpertise in managing the Git and GitHub Pull Request lifecycle, including staging changes, generating PR descriptions, and branch…1 min

Part III

Test Data

1 chapter

Pirate SkillSpeak like a pirate.1 min

carries an editor’s note.

$ npx skills add google-gemini/gemini-cli

Typeset in this issue’s own colours, resolved from a curated brand profile.

Front matter

From the README

(opens in a new tab) (opens in a new tab) (opens in a new tab)

Colophon

How this issue was made

Source

github.com/google-gemini/gemini-cli, branch main, last pushed 10 August 2026.

Licence

Apache-2.0 — the text of every chapter is reproduced unmodified, frontmatter included, under the upstream licence.

Discovery

24 chapters found by walking the repository tree for SKILL.md, not by matching a directory convention. 5 distinct layouts observed: .gemini/skills/*/SKILL.md, packages/core/src/skills/builtin/*/SKILL.md, packages/sdk/test-data/skills/*/SKILL.md, tools/caretaker-agent/cloudrun/triage-worker/.gemini/skills/*/SKILL.md, tools/gemini-cli-bot/.gemini/skills/*/SKILL.md.

Issue colours

Resolved from a curated brand profile — hue 288°, chroma 0.190. Two accent tones are generated per issue and each is proven against its own ground before it ships: a single accent that passes AA on both light and dark paper is arithmetically impossible.

Heading repairs

1 repair applied to the front matter so the document has one h1 and no skipped levels:

Removed “Gemini CLI”, a leading h1 that duplicated the chapter title.

Spec compliance

2 editorial notes across 2 of 24 chapters. They are printed in the margin of each chapter rather than as errors here.

Code Explorer — 1 note
Spec Generator — 1 note

Images

Images inside a chapter come from the upstream repository. Where the author gave no alternative text we mark the image decorative rather than inventing a description — a plausible caption we made up is worse than none for the reader who depends on it.

# Create and activate a new environment
conda create -y -n gemini_env -c conda-forge nodejs
conda activate gemini_env

# Install Gemini CLI globally via npm (inside the environment)
npm install -g @google/gemini-cli

Install and provenance

Front matter

Colophon