Agent skill

Gemini Image

by tyrchen in tyrchen/geektime-bootcamp-ai

Reference guide for using google-genai Python library to generate images with gemini-3-pro-image-preview model.

No licenceAuto-check passedMedia & Creative

Install Gemini Image

skills CLI
$ npx skills add tyrchen/geektime-bootcamp-ai --skill gemini-image -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install tyrchen/geektime-bootcamp-ai gemini-image --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/tyrchen/geektime-bootcamp-ai.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/gemini-image .claude/skills/gemini-image && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
gemini-image
GitHub stars
236
Used in
1 other repo
Token cost
~1.1k tokens
SKILL.md length
327 words
Files
3 (incl. references)
Skills in repo
3
Repo updated
First seen
Licence
None found

At a glance

Reference guide for using google-genai Python library to generate images with gemini-3-pro-image-preview model.

  • Works in 4 steps: Text-to-Image Generation → Style Transfer with Reference Images → Image Editing → …
  • Building new projects that need Gemini image generation capabilities
  • SKILL.md covers Language References, Model Information, Supported Aspect Ratios and Image Sizes, plus 5 more sections
  • Needs GOOGLE_API_KEY

What it does

Gemini Image is an agent skill from tyrchen/geektime-bootcamp-ai. Reference guide for using google-genai Python library to generate images with gemini-3-pro-image-preview model. Use this skill when building new projects that need Gemini image generation capabilities, to understand the correct API patterns, configuration options, and best practices.

Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files, including reference files (for example `README.md` and `references/python.md`).

It sits in Media & Creative, covering Image generation. It works with Google Gemini and Python.

When your agent uses it

  • Building new projects that need Gemini image generation capabilities
  • Understand the correct API patterns
  • Configuration options

Example prompts

  • “/gemini-image”

Requirements

  • Python 3
  • A credential in GOOGLE_API_KEY

Workflow steps

4 steps, taken from the step headings in SKILL.md.

  1. Text-to-Image Generation
  2. Style Transfer with Reference Images
  3. Image Editing
  4. Batch Generation

What it can do on your machine

Read from SKILL.md and the folder at commit 4f1be7c. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are bash).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names these keys or tokens, usually read from environment variables:

    • GOOGLE_API_KEY

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Gemini Image loads about 1.1k tokens when it runs, and up to ~4k if it reads all its reference files. Until then it costs about 74 tokens; SKILL.md has 327 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~74
When it runs · the whole SKILL.md, loaded when a task matches
~1.1k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~4k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 327 words (~1,068 tokens).

“Reference for generating images with Google's gemini-3-pro-image-preview model.”

— opening of SKILL.md by tyrchen
name
gemini-image

Read the full SKILL.md on GitHub

Files

SKILL.md and 2 other files (references) in .claude/skills/gemini-image of tyrchen/geektime-bootcamp-ai.

  • SKILL.md
  • README.md
  • references/python.md

Open the folder on GitHubat commit 4f1be7c

Used in 1 other repository

We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in tyrchen/geektime-bootcamp-ai, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Gemini Image next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Gemini Image compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Gemini Image this skilltyrchen/geektime-bootcamp-ai2361 repos~1.1kAutomated safety check: PassNone
Gemini Interactions APIAyuilos/Miffan192—~4.6kAutomated safety check: PassAGPL-3.0
Gflow CLIffroliva/gflow-cli264—~4.8kAutomated safety check: NotesMIT
Nanobananakenneth-liao/ai-launchpad-marketplace126—~4kAutomated safety check: NotesNone
Nano Banana Usecnemri/google-genai-skills127—~587Automated safety check: PassMIT
Nanobanana Skillfeiskyer/claude-code-settings1.7k—~1.1kAutomated safety check: PassMIT

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Questions about Gemini Image

What does Gemini Image do?

Reference guide for using google-genai Python library to generate images with gemini-3-pro-image-preview model. Gemini Image is an agent skill from tyrchen/geektime-bootcamp-ai. Reference guide for using google-genai Python library to generate images with gemini-3-pro-image-preview model.

When should I use Gemini Image?

Gemini Image fits situations like: building new projects that need Gemini image generation capabilities; understand the correct API patterns; configuration options.

How do I install Gemini Image in Claude Code?

Run `npx skills add tyrchen/geektime-bootcamp-ai --skill gemini-image -a claude-code`. Or copy the skill folder (.claude/skills/gemini-image in tyrchen/geektime-bootcamp-ai) into .claude/skills/gemini-image in your project. Claude Code loads it when a task matches its description.

How do I install Gemini Image in Codex?

Run `npx skills add tyrchen/geektime-bootcamp-ai --skill gemini-image -a codex`. Or copy the skill folder (.claude/skills/gemini-image in tyrchen/geektime-bootcamp-ai) into .agents/skills/gemini-image in your project. Codex loads it when a task matches its description.

Can I use Gemini Image in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add tyrchen/geektime-bootcamp-ai --skill gemini-image -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/gemini-image, .gemini/skills/gemini-image, .github/skills/gemini-image and .opencode/skills/gemini-image in your project.

What does Gemini Image need to run?

Going by SKILL.md and its folder, Gemini Image needs credentials named GOOGLE_API_KEY. Our summary lists: Python 3; A credential in GOOGLE_API_KEY.

Does Gemini Image access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Gemini Image safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Gemini Image use?

No licence was found for Gemini Image or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Gemini Image use?

About 1.1k tokens (SKILL.md is roughly 4.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 3k tokens, read only when the agent opens those files.

What are the alternatives to Gemini Image?

Skills that share tags, products or a category with Gemini Image: Gemini Interactions API (Ayuilos/Miffan, 192 stars), Gflow CLI (ffroliva/gflow-cli, 264 stars), Nanobanana (kenneth-liao/ai-launchpad-marketplace, 126 stars) and Nano Banana Use (cnemri/google-genai-skills, 127 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Gemini Image?

tyrchen (a GitHub user) maintains it in tyrchen/geektime-bootcamp-ai, which has 236 GitHub stars. The repository holds 3 skills in this directory. The repository was last updated on March 26, 2026.

Source: tyrchen/geektime-bootcamp-ai on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.