npm · mcp-image
IMAGE_PROVIDER — Image provider to use: 'gemini' (default), 'openai', or 'seedream'
GEMINI_API_KEY · secret — Google Gemini API key for image generation when IMAGE_PROVIDER=gemini (get from https://aistudio.google.com/apikey)
OPENAI_API_KEY · secret — OpenAI API key for image generation when IMAGE_PROVIDER=openai. Requires OpenAI organization verification to access GPT Image 2.5 (https://platform.openai.com/settings/organization/general)
ARK_API_KEY · secret — BytePlus ModelArk AP region API key required when IMAGE_PROVIDER=seedream
IMAGE_OUTPUT_DIR — Absolute or working-directory-relative path where generated images will be saved (defaults to ./output)
IMAGE_QUALITY — Default quality preset: 'fast' (default), 'balanced', or 'quality'
SKIP_PROMPT_ENHANCEMENT — Set to 'true' to disable automatic prompt optimization and use direct prompts