Nano Banana prompt pack: SQL-style "planet in a hand" city dioramas
A prompt creator shared a structured prompt for Nano Banana 2.1 that is written like a SQL query. It asks for a 2x2 grid of four cities, each shown as a tiny spherical planet resting on an open palm, with the city's main monument on top, dense blocks around it, highways wrapping the sphere, local trees, and a tilt-shift, bokeh look.
Why it matters
Writing a prompt as a list of named fields makes it easy to swap one part (the city, the lens, the trees) and keep everything else the same.
Who it's for
Designers and hobbyists who like repeatable image series.
How to try it
- Copy the prompt from the original post.
- Change the city names and the aspect ratio to suit your use.
- Change one field at a time (for example optical_settings) to see what each part does.
Plan & availability: Nano Banana 2.1 in the Gemini app, AI Studio or the Gemini API.
Note: reported by users on X; we haven't independently confirmed it works in the current version.
Source: @Gdgtify on X ↗
Written by AgentStackList from the original post. Checked Oct 17, 2026. Features, plans and availability can change, so confirm on the source before you rely on it.
nano-bananapromptsimage-generation
More Gemini tricks
- A developer reports high cache-miss rates on the Gemini API · Oct 17
- Turn a dense PDF into an interactive web app with Canvas · Oct 16
- Google AI Pro subscribers can now build with Argon in AI Studio · Oct 16
- Watch four Argon agents beat Minecraft with code alone · Oct 16
Agent Stack Weekly · free
Get the week's best AI tricks
Limit and pricing changes, new MCP servers, and setup fixes for Claude Code, Codex, Cursor, Copilot and Antigravity.
No spam. Unsubscribe anytime. Read past issues