Generate the icon yourself with any reachable image tool. Codex: image_gen. If gemini-cli is available, use it (gemini-cli auth set <GOOGLE_API_KEY> if unauthenticated). Do not hand the prompt back when a tool can run. Do not fake it with SVG-to-PNG. If no tool exists, give the filled prompt to the user and resume post-processing with their file.

Read the Expo config and write to its real paths: expo.icon, expo.android.adaptiveIcon.foregroundImage, expo.android.adaptiveIcon.backgroundColor, expo.web.favicon. Pull brand colors and the app concept from the project. Use color names in the prompt, never hex.

Targets: iOS <ASSETS>/icon.png 1024×1024, no transparency, no baked rounded mask. Android <ASSETS>/adaptive-icon.png with the subject inside the central ~66% safe circle. Web <ASSETS>/favicon.png 192×192.

Send this as one prompt, filling Subject and Color palette:

Create a 1024x1024 square app icon — premium, vibrant and dimensional, in the style of top App Store featured apps.
Subject: <single hero for <AppName> — soft 3D mascot with simple dot eyes, OR a bold symbolic object; readable at small sizes>
Look: one glossy 3D/2.5D hero, studio lighting, rim light, subtle glow, centered on a FULL-BLEED branded background that reaches all four edges.
Composition: hero fills ~60-80%; one focal point; sharp 90° corners; critical detail inside the central ~70%.
Do NOT: flat pictogram, black-on-white glyph, line icon, white/empty background, icon-in-icon, baked rounded corners, text, letters, faces, logos, chrome, neon, flares.
Color palette: <brand color names>. Technical: square 1:1; readable at 60px.

Pick mascot for consumer, social, wellness, or AI; symbol or object for finance, productivity, or utilities.

app-icon