Ultimate Gemini Skill — Development skill for Claude Code

ultimate-gemini-skill


🚀 Easiest way to install

One command — no git clone, no manual copying:

npx skills add bradAGI/ultimate-gemini-skill

That's it. Auto-detects your coding agent and drops the skill in the right place.

Works with every agent supported by [skills.sh](https://skills.sh)

This skill is agent-agnostic. The `npx skills add` installer supports **19+ coding agents / IDEs**, including:

**Claude Code** · **Cursor** · **Windsurf** · **Codex** · **Cline** · **GitHub Copilot** · **Gemini** · **VSCode** · **Goose** · **AMP** · **Antigravity** · **ClawdBot** · **Droid** · **Kilo** · **Kiro CLI** · **Nous Research** · **OpenCode** · **Roo** · **Trae**

If your agent loads skills from a standard `skills/` or similar directory, the installer will place the files correctly. You can also install manually (see below) — the skill itself is just a `SKILL.md` + a Python CLI, so any harness that can read a markdown skill definition can use it.

After installing, set `GEMINI_API_KEY` (see [Securing your API key](#securing-your-api-key) below) and run `pip install google-genai pillow` once for the bundled CLI.

---

A **standalone, agent-agnostic** skill for Gemini 3.1 Flash Image (Nano Banana 2). Ships a self-contained Python CLI — `scripts/gemini_image.py` — that calls the Gemini API directly. Derived from [`ultimate-image-gen-mcp`](https://github.com/anand-92/ultimate-image-gen-mcp) by [@anand-92](https://github.com/anand-92) — all credit for the underlying tool design and prompt templates goes to the original author.

The banner above was generated by the skill itself — `generate-image --aspect-ratio 21:9 --image-size 1K`.

Samples

All three generated with this skill at **1K**, rendered by `scripts/gemini_image.py`. Commands shown.

1. Real-world grounded photo (Google Search + Image Search)


python3 scripts/gemini_image.py generate-image \
  --prompt "Ton