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Get Started Free →Transform natural language image requests into optimized structured prompts for Gemini image generation. Automatically detects style and builds the perfect prompt — cinematic, illustration, anime, 3D, watercolor, product, and more.
| Test case | Without → With | Effect | Δ tokens | Δ turns |
|---|---|---|---|---|
| case-09 | ✗→✓ | ▲ Improved | 237% | 0% |
| case-10 | ✗→✓ | ▲ Improved | 245% | 0% |
| case-03 | ✗→✓ | ▲ Improved | 766% | 0% |
| case-07 | ✗→✓ | ▲ Improved | 320% | 0% |
| case-08 | ✗→✓ | ▲ Improved | 321% | 0% |
This skill transforms simple, natural image requests into optimized structured prompts that produce dramatically better results from Gemini 3 Pro Image.
Instead of sending a plain text prompt (which produces generic, "AI slop" results), this skill builds a structured JSON prompt with the right technical details for the detected style — camera specs for photography, art techniques for illustration, render settings for 3D, and more.
When the user asks you to generate or edit an image:
bashuv run {nano-banana-pro-dir}/scripts/generate_image.py \ --prompt '<YOUR_JSON_PROMPT>' \ --filename "<descriptive-name>.png" \ --resolution 2K
Replace {nano-banana-pro-dir} with the path to the nano-banana-pro skill (typically bundled with OpenClaw).
For image editing (user provides a reference image):
bashuv run {nano-banana-pro-dir}/scripts/generate_image.py \ --prompt '<YOUR_JSON_PROMPT>' \ --filename "<output-name>.png" \ -i "/path/to/reference.png" \ --resolution 2K
The --filename argument should always be a simple file path constructed by the agent (e.g., gecko-running.png). Never pass unsanitized user input directly as the filename. The agent should derive a safe, descriptive filename from the context.
Save images to the user's Desktop or the path they specify:
~/Desktop/<descriptive-name>.pnggecko-coding-night.png, not output.pngDetect the style from the user's request. Look for keywords, context, and intent:
| Style | Trigger Keywords / Context | |-------|---------------------------| | Cinematic / Photorealistic | "photo", "realistic", "cinematic", "portrait", "street", "landscape", real-world scenes, people, animals in real settings | | Product / Studio | "product shot", "studio", "mockup", "packaging", "e-commerce", objects on clean backgrounds | | Street / Documentary | "candid", "street", "reportage", "documentary", "raw", urban scenes | | Illustration / Digital Art | "illustration", "digital art", "concept art", "fantasy art", "draw", "artwork" | | Anime / Manga | "anime", "manga", "cel shaded", "studio ghibli", Japanese animation style | | 3D / Pixar | "3D", "Pixar", "render", "CGI", "clay", "isometric", cartoon characters | | Watercolor / Traditional | "watercolor", "oil painting", "sketch", "pencil", "pastel", "charcoal", traditional media | | Minimalist / Graphic | "logo", "icon", "flat", "minimal", "vector", "graphic design", "poster" | | Surreal / Abstract | "surreal", "abstract", "dreamlike", "psychedelic", "impossible", "Dalí" |
If no style is obvious, default to Cinematic / Photorealistic — it's the most versatile and produces the best baseline quality.
If the user specifies a style explicitly, always respect that over auto-detection.
json{ "instruction": "<one-line description of the final image>", "subject": { "description": "<main subject in detail>", "clothing": "<if applicable>", "expression": "<facial expression or mood>", "pose": "<body position, action>", "details": "<distinguishing features, textures>" }, "scene": { "setting": "<location/environment>", "key_elements": "<important objects in the scene>", "background": "<what's behind the subject>", "foreground": "<what's in front, if any>", "time_of_day": "<morning, golden hour, night, etc.>" }, "photography": { "camera": "<Sony A7IV | Hasselblad X2D | Canon R5 | ARRI Alexa 65 | Leica M11>", "lens": "<24mm f/1.4 | 35mm f/1.4 | 50mm f/1.2 | 85mm f/1.8 | 135mm f/2>", "shot_type": "<wide | medium | close-up | extreme close-up | aerial | low angle>", "depth_of_field": "<shallow with bokeh | deep | tilt-shift>", "lighting": "<natural golden hour | chiaroscuro | rim light | neon | overcast soft | studio three-point>", "film_stock": "<Kodak Portra 400 | Fujifilm Pro 400H | Kodak Ektar 100 | CineStill 800T | Ilford HP5>", "texture": "<subtle film grain | clean digital | heavy grain>" }, "mood": "<emotional atmosphere in one sentence>", "color_palette": "<dominant colors or color grading style>", "aspect_ratio": "<1:1 | 16:9 | 4:3 | 9:16 | 3:2>", "quality": "8K, photorealistic, cinematic, RAW photo", "negative": "no text, no watermark, no deformed faces, no extra limbs, no blurry" }
Camera selection guide:
json{ "instruction": "<product shot description>", "subject": { "product": "<item name and type>", "material": "<glass, metal, fabric, wood, plastic, ceramic>", "color": "<product colors>", "details": "<logos, textures, unique features>" }, "scene": { "backdrop": "<seamless white | gradient | textured surface | lifestyle context>", "surface": "<marble | wood | concrete | acrylic | fabric>", "props": "<complementary objects if any>" }, "photography": { "camera": "Hasselblad X2D", "lens": "90mm f/3.2 macro", "shot_type": "<hero shot | flat lay | 45-degree | floating | exploded view>", "lighting": "<softbox | ring light | natural window | dramatic single source | backlit>", "reflections": "<subtle | mirror-like | none>", "depth_of_field": "shallow, product sharp, background soft" }, "mood": "<clean and premium | warm and inviting | bold and modern>", "color_palette": "<brand-aligned colors>", "aspect_ratio": "1:1", "quality": "8K, commercial photography, sharp detail, color-accurate", "negative": "no text, no watermark, no dust, no scratches" }
json{ "instruction": "<illustration description>", "subject": { "character": "<character description>", "expression": "<emotion>", "pose": "<action or stance>", "details": "<costume, accessories, distinctive features>" }, "scene": { "setting": "<world/environment>", "key_elements": "<important scene elements>", "atmosphere": "<fog, particles, light rays, sparks>" }, "art_style": { "medium": "<digital painting | concept art | comic book | storybook | gouache>", "technique": "<cel shading | painterly | line art with color | crosshatching>", "reference_artists": "<1-2 artist names for style reference>", "color_approach": "<vibrant saturated | muted earthy | monochromatic | complementary>" }, "composition": { "framing": "<rule of thirds | centered | dynamic diagonal | symmetrical>", "perspective": "<eye level | bird's eye | worm's eye | isometric>", "focal_point": "<where the eye should go>" }, "mood": "<epic and dramatic | whimsical and playful | dark and moody>", "color_palette": "<specific colors or palette description>", "aspect_ratio": "<16:9 | 3:2 | 1:1>", "quality": "highly detailed illustration, trending on ArtStation, masterpiece", "negative": "no text, no watermark, no photo-realistic, no AI artifacts" }
json{ "instruction": "<anime scene description>", "subject": { "character": "<character description>", "hair": "<style, color>", "eyes": "<color, expression>", "outfit": "<clothing details>", "pose": "<action or expression>" }, "scene": { "setting": "<location>", "atmosphere": "<cherry blossoms, rain, sunset glow, sparkles>", "background_style": "<detailed | simplified | gradient wash>" }, "art_style": { "studio_reference": "<Studio Ghibli | Kyoto Animation | Ufotable | MAPPA | Trigger | Makoto Shinkai>", "line_weight": "<thin and clean | bold and expressive | variable>", "shading": "<flat cel | soft gradient | dramatic shadow>", "era": "<modern anime | 90s retro | 80s vintage>" }, "composition": { "framing": "<close-up portrait | action shot | scenic wide | over-the-shoulder>", "effects": "<speed lines | light flares | motion blur | sparkle overlay>" }, "mood": "<heartwarming | intense action | melancholic | comedic>", "color_palette": "<pastel soft | vibrant saturated | dark moody | warm sunset>", "aspect_ratio": "16:9", "quality": "anime key visual, high detail, studio quality, clean lines", "negative": "no western cartoon style, no 3D, no photorealistic, no deformed hands" }
json{ "instruction": "<3D scene description>", "subject": { "character": "<character description>", "material": "<clay | plastic | rubber | fur | fabric>", "proportions": "<chibi | realistic | stylized | exaggerated>", "expression": "<emotion>", "pose": "<stance or action>" }, "scene": { "environment": "<setting>", "props": "<objects in scene>", "scale": "<miniature diorama | life-size | macro>" }, "render": { "engine": "<Pixar RenderMan | Blender Cycles | Unreal Engine 5 | Octane>", "style": "<Pixar | DreamWorks | Aardman claymation | Nendoroid figure>", "materials": "<subsurface scattering | glossy plastic | matte clay | fabric texture>", "lighting": "<three-point studio | HDRI environment | dramatic rim | soft ambient>", "effects": "<ambient occlusion | global illumination | volumetric fog | depth of field>" }, "mood": "<playful and colorful | dramatic and cinematic | cozy and warm>", "color_palette": "<bright primary | pastel | earthy muted | vibrant candy>", "aspect_ratio": "16:9", "quality": "3D render, Pixar quality, high detail, raytraced, 8K", "negative": "no 2D, no flat, no sketch, no watermark, no text" }
json{ "instruction": "<painting description>", "subject": { "description": "<what to paint>", "details": "<important visual details>" }, "scene": { "setting": "<environment or abstract>", "elements": "<supporting visual elements>" }, "traditional_art": { "medium": "<watercolor | oil paint | acrylic | gouache | pastel | charcoal | pencil | ink wash>", "paper": "<cold press watercolor | hot press | canvas | toned paper | rice paper>", "technique": "<wet-on-wet | dry brush | impasto | glazing | stippling | hatching | wash>", "brush": "<round | flat | fan | palette knife | sponge>", "finish": "<loose and expressive | tight and detailed | abstract | impressionistic>" }, "composition": { "framing": "<centered | rule of thirds | asymmetric>", "white_space": "<generous margins | edge-to-edge | vignette>" }, "mood": "<serene | vibrant | nostalgic | raw and emotional>", "color_palette": "<limited palette (3-4 colors) | full spectrum | monochrome wash>", "aspect_ratio": "3:2", "quality": "fine art quality, museum worthy, masterful brushwork, visible texture", "negative": "no digital look, no photorealistic, no text, no watermark, no AI artifacts" }
json{ "instruction": "<design description>", "subject": { "element": "<main visual element>", "style": "<geometric | organic | typographic | iconographic>" }, "design": { "approach": "<flat design | material design | swiss style | brutalist | retro>", "grid": "<centered | asymmetric | modular grid>", "shapes": "<circles | rectangles | triangles | organic blobs | line art>", "contrast": "<high contrast | subtle | duotone>" }, "color_palette": "<2-3 specific colors or palette name>", "background": "<solid color | gradient | textured | transparent>", "aspect_ratio": "1:1", "quality": "clean vector quality, crisp edges, professional graphic design", "negative": "no photorealistic, no complex textures, no gradients unless specified, no text unless requested" }
json{ "instruction": "<surreal scene description>", "subject": { "central_element": "<main impossible or dreamlike element>", "transformation": "<how reality is bent or broken>", "symbolism": "<underlying meaning or motif>" }, "scene": { "reality_level": "<slightly off | dreamlike | fully impossible | cosmic>", "environment": "<melting landscape | infinite space | underwater sky | fractal world>", "scale_distortion": "<giant small things | tiny big things | impossible geometry>" }, "art_style": { "reference": "<Dalí | Magritte | Escher | Beksinski | James Jean | Android Jones>", "medium": "<hyperrealistic oil | digital surrealism | mixed media | collage>", "technique": "<photobashing | matte painting | double exposure | glitch>" }, "mood": "<unsettling beauty | peaceful absurdity | cosmic wonder | dark fantasy>", "color_palette": "<describe the color world>", "aspect_ratio": "16:9", "quality": "highly detailed, surrealist masterpiece, museum quality", "negative": "no text, no watermark, no generic, no stock photo feel" }
Detected style: 3D / Pixar (fun character scene)
json{ "instruction": "A cute mint-green gecko character riding a skateboard while eating a large slice of pepperoni pizza", "subject": { "character": "small mint-green gecko with big expressive pale pink eyes and a wide happy grin", "material": "smooth glossy skin with subtle subsurface scattering", "proportions": "stylized chibi, slightly oversized head", "expression": "pure joy, eyes half-closed savoring the pizza", "pose": "standing on a moving skateboard, one hand holding pizza slice, cheese stretching" }, "scene": { "environment": "sunny Venice Beach boardwalk, palm trees, blue sky", "props": "worn wooden skateboard with flame decals, pizza box on a nearby bench", "scale": "life-size character in real-world setting" }, "render": { "engine": "Pixar RenderMan", "style": "Pixar", "materials": "subsurface scattering on gecko skin, glossy cheese, matte concrete", "lighting": "warm golden hour sunlight with soft shadows", "effects": "subtle motion blur on skateboard wheels, depth of field" }, "mood": "carefree summer vibes, playful and fun", "color_palette": "warm yellows, mint green, sky blue, pizza orange", "aspect_ratio": "16:9", "quality": "3D render, Pixar quality, high detail, raytraced, 8K", "negative": "no 2D, no flat, no text, no watermark, no dark mood" }
Detected style: Cinematic / Photorealistic
json{ "instruction": "A lone samurai standing in heavy rain at night, katana drawn, cinematic and dramatic", "subject": { "description": "weathered samurai warrior, middle-aged, battle-scarred", "clothing": "dark indigo hakama and kimono, worn leather chest armor, straw sandals", "expression": "intense focus, eyes locked forward, jaw set", "pose": "standing in chudan-no-kamae stance, katana held at center", "details": "rain droplets on blade edge catching light, wet hair tied in topknot" }, "scene": { "setting": "abandoned temple courtyard with stone lanterns", "key_elements": "heavy rainfall, puddles reflecting lantern light", "background": "dark silhouette of temple roof, mist rolling between pillars", "foreground": "rain splashing on stone ground, shallow puddles", "time_of_day": "deep night, moonless" }, "photography": { "camera": "ARRI Alexa 65", "lens": "50mm f/1.2", "shot_type": "medium shot, slightly low angle", "depth_of_field": "shallow, rain drops in foreground out of focus", "lighting": "single warm lantern as key light from left, cool rain backlit by distant light, rim light on shoulders", "film_stock": "CineStill 800T", "texture": "subtle film grain" }, "mood": "tense calm before the storm, honor and solitude", "color_palette": "deep indigo, warm amber lantern glow, cool steel grey", "aspect_ratio": "16:9", "quality": "8K, photorealistic, cinematic, RAW photo", "negative": "no text, no watermark, no deformed faces, no blurry, no anime style" }
Detected style: Watercolor / Traditional
json{ "instruction": "A loose, expressive watercolor painting of sunflowers in a ceramic vase", "subject": { "description": "five sunflowers in various stages of bloom, some drooping slightly", "details": "petals ranging from bright yellow to burnt sienna, dark brown seed heads with visible texture" }, "scene": { "setting": "simple tabletop, implied window light", "elements": "rustic blue ceramic vase, a few fallen petals on the surface, soft shadow" }, "traditional_art": { "medium": "watercolor", "paper": "cold press watercolor paper, visible tooth texture", "technique": "wet-on-wet for soft petal edges, dry brush for seed head texture, controlled wash for background", "brush": "large round for washes, small round for details", "finish": "loose and expressive, some areas left unfinished showing white paper" }, "composition": { "framing": "slightly off-center, flowers extending above frame edge", "white_space": "generous margins, breathing room around the vase" }, "mood": "warm, nostalgic, peaceful afternoon light", "color_palette": "cadmium yellow, burnt sienna, cerulean blue, sap green — limited palette", "aspect_ratio": "3:2", "quality": "fine art quality, museum worthy, masterful brushwork, visible paper texture", "negative": "no digital look, no photorealistic, no text, no watermark, no harsh edges" }
When the user provides a reference image to edit or use as inspiration:
-i flagbashuv run {nano-banana-pro-dir}/scripts/generate_image.py \ --prompt '<JSON_PROMPT>' \ --filename "edited-output.png" \ -i "/path/to/original.png" \ --resolution 2K
For character consistency across multiple images, always include the same reference image(s) and describe the character identically in the subject field.
| Style | Must-Have Fields | Key Differentiator | |-------|-----------------|-------------------| | Cinematic | photography.camera, lens, film_stock | Real camera specs sell the realism | | Product | photography.lighting, surface, reflections | Clean, commercial precision | | Illustration | art_style.medium, technique, reference_artists | Artist references anchor the style | | Anime | art_style.studio_reference, line_weight, shading | Studio name = instant style match | | 3D/Pixar | render.engine, style, materials | Render engine + material physics | | Watercolor | traditional_art.medium, paper, technique | Paper texture + brush technique | | Minimalist | design.approach, shapes, contrast | Less is more, precision matters | | Surreal | art_style.reference, reality_level, transformation | Named surrealist = instant vibe |
Other measured skills in the registry, with their headline benchmark lift.