/nano-banana

name: nano-banana
description: >-
  Use to write great prompts for Nano Banana (Google's Gemini image model: Nano Banana Pro = Gemini 3
  Pro Image) to generate or edit images for social media — the image-prompt-craft mini-skill. Run when
  the user wants a nano-banana / Gemini image prompt, an AI image for a post (quote graphic, carousel
  slide, thumbnail, infographic, product shot, ad creative), or conversational image editing. Reads
  brand-profile for brand colours/style. Strengths: best-in-class legible in-image text (route
  typography/layout-led design to ideogram), multi-image consistency, conversational editing, and
  Google's photoreal lane (Imagen deprecated); surreal art stays Midjourney's. Teaches prompt anatomy,
  the text-first approach, reference-image consistency, and per-platform aspect ratios. Honest: SynthID
  watermark + AI disclosure; never real identifiable people or copyrighted characters/logos; verify
  spelling/data. The API/connection and WoopSocial upload flow live in tools/integrations/nano-banana.md.
metadata:
  version: 1.0.0
license: MIT

Nano Banana (image prompt craft)

Write prompts that get studio-quality images out of **Nano Banana** — Google's Gemini image model (**Nano Banana Pro = Gemini 3 Pro Image**; the Flash variant is faster/cheaper). This is the **prompt-craft** layer of a three-layer setup:

• **Connection/API** (model IDs, auth, the *generate → upload to WoopSocial Media → attach* flow) →

`tools/integrations/nano-banana.md`.

• **Prompt craft** (this skill) → how to ask for the right image well.
• **In-skill application** → e.g. `carousel-writer`'s image-prompt-pack.

> Fast-moving area — re-verify model names/capabilities quarterly.

Reach for Nano Banana when… (match the job)

Its real strengths: **legible in-image text** (best in class), **multi-image/character consistency**, **conversational editing**, and **Search-grounded infographics**. Reach **elsewhere** for **typography/layout-led design** (→ `ideogram`) or **surreal/fine-art** aesthetics (Midjourney). (**Imagen**, the former photoreal sibling, is **deprecated** — Gemini API shutdown Aug 17, 2026 — so Google-side photoreal work now lands here.) Don't default it to every job. (Details: `references/when-and-how-to-prompt.md`.)

Step 0 — Read the brand + the job

Load `brand-profile.md` (colours, visual style, do/don't). Identify the **job** (quote graphic / carousel / thumbnail / infographic / product shot / background / ad / edit) and the **platform aspect ratio**.

Step 1 — Write the prompt (natural language, not keyword spam)

Describe, don't pad. Include **subject · composition/camera · action/context · lighting/atmosphere · style/medium · constraints + exact text**. Drop "4k, masterpiece, trending on artstation" tokens — modern Gemini models reason over natural language. Bake in the **brand** palette/style. Set the **aspect ratio**. Iterate cheap at 1K, finalize at 2K/4K. See `references/when-and-how-to-prompt.md`.

Step 2 — Use the superpowers deliberately

• **Text:** put the **exact words in quotes** + font + placement; settle the **copy first** (the

text-first approach), keep it short, and **verify the spelling** in the output.

• **Consistency:** use **reference images** and a **locked style description**; generate a set **one at

a time** ("everything the same except X"); hold the aspect ratio; review for drift.

• **Editing:** natural-language changes to a hero image for locale/seasonal/A-B variants.

See `references/text-and-consistency.md`.

Step 3 — Pick the recipe

Adapt a pattern for the job (quote graphic, carousel set, thumbnail, infographic, product/lifestyle, background, ad), with the right aspect ratio and brand grounding. See `references/social-recipes.md`.

Step 4 — Verify, disclose, ship

• **Verify** rendered text and any infographic **data** before publishing (the model can misspell /

misplace facts).

• **Disclose** AI generation per platform/region (Meta "Made with AI", EU AI Act); every image carries

a **SynthID** watermark (+ C2PA) — don't strip it or pass the image off as a non-AI photo.

• **Ship:** generate per the integration guide → **upload bytes to WoopSocial Media → attach to the

post** via `scheduling-and-queue`. WoopSocial doesn't generate images.

Quality bar — self-check

• Did I **match the tool to the job** (and say when to use another model)?
• Is the prompt **natural-language and specific** (subject/composition/lighting/style/text), **brand-

grounded**, with the **right aspect ratio**?

• For text: **exact words in quotes** + font + placement, **copy-first**, **spelling verified**?
• For sets: **references + locked style**, one-at-a-time, reviewed for drift?
• Did I handle **SynthID + disclosure**, **verify text/data**, and **refuse real people / IP**?
• Did I point to **`tools/integrations/nano-banana.md`** for the API + WoopSocial flow (no claim that

WoopSocial generates images)?

Edge cases & pushback

• **Photoreal headshot / surreal art** → suggest the better-fit model; don't force Nano Banana.
• **"logo, 4k, masterpiece, trending…"** → rewrite into a specific scene description; drop token spam.
• **Real person / copyrighted character / brand style** → refuse; offer an original alternative.
• **"Post it as a normal photo"** → SynthID + disclosure; don't disguise AI imagery.
• **Long paragraph of in-image text** → expect errors; shorten + verify (or finish in a design tool).
• **"Generate it in WoopSocial"** → WoopSocial doesn't generate; this skill prompts the model, then the

image is uploaded to Media and attached.

Related

• `tools/integrations/nano-banana.md` — API/model IDs, auth, pricing, the upload-to-WoopSocial flow.
• `carousel-writer` (image-prompt-pack), `reels-script` — consuming skills; `ideogram` — typography sibling.
• `brand-profile` — the visual brand; `caption-writer`/`hook-writer` — the in-image copy.
• `scheduling-and-queue` — attach the image to a post and publis