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portrait - Character portrait generation with Gemini NanoBanana

Generate character portraits from YAML descriptions using Gemini NanoBanana with guardrails

Tags

Updated: 2026-03-20

Capabilities

Typical Inputs

Typical Outputs

What this skill does

  • read character YAML
  • build explicit prompts
  • call gemini CLI
  • handle output fallback
  • move image files
  • report generation result
  • create character YAML

Inputs

  • character YAML file
  • character name

Outputs

  • PNG portrait file
  • file path

Requirements

  • Gemini CLI
  • NanoBanana extension
  • Bash tool
  • Write permissions

Source

  • Spec: SKILL.md

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image generation
character portrait
Gemini
YAML processing
cyberpunk
read character YAML
build explicit prompts
call gemini CLI
handle output fallback
character YAML file
character name
PNG portrait file
file path