Movie Poster Graphics

Use this skill when an agent needs to generate poster-style key art for a product, feature, startup, service, campaign, brand, story, or abstract idea.

Prerequisites

• OpenRouter API key — Image generation models are accessed via OpenRouter. You need an OpenRouter API key to use this skill.

The goal is not just to make a nice image. The goal is to make an image that reads like a deliberate poster: strong focal point, clear hierarchy, memorable silhouette, intentional lighting, and either integrated typography or obvious space for later typography.

This skill is tool-agnostic. Use whatever image generation service is available in the environment.

If the agent has OpenRouter access but no better wrapper, npx minibanana@0.1.0 is a good option.

Unless the user specifies a model, good defaults are:

• google/gemini-3-pro-image-preview — strong text rendering, strong multi-image reasoning, good for complex poster compositions
• google/gemini-3.1-flash-image-preview — fast iteration with good quality, supports extended aspect ratios