Gemini Image MCP

Instructions

Implementation Reference

• gemini-image.js:337-348 (handler)

  The getConfigInfo() function that implements the actual logic for get_image_config_info tool. Returns configuration object with valid aspect ratios, image sizes, models, and documentation link.

  export function getConfigInfo() {
    return {
      aspectRatios: VALID_ASPECT_RATIOS,
      imageSizes: VALID_IMAGE_SIZES,
      models: {
        default: DEFAULT_MODEL,
        fallback: FALLBACK_MODEL,
        notes: "4K는 pro 모델에서만 지원됩니다.",
      },
      docs: "https://ai.google.dev/gemini-api/docs/image-generation?hl=ko",
    };
  }

• server.js:279-293 (registration)

  Registration of the get_image_config_info MCP tool. The tool has no input parameters and calls getConfigInfo() to return configuration information as JSON.

  server.tool(
    "get_image_config_info",
    "이미지 생성/편집에 사용 가능한 설정 옵션 정보를 반환합니다",
    async () => {
      const info = getConfigInfo();
      return {
        content: [
          {
            type: "text",
            text: JSON.stringify(info, null, 2),
          },
        ],
      };
    }
  );

• gemini-image.js:9-21 (schema)

  Schema definitions for valid configuration options - VALID_ASPECT_RATIOS and VALID_IMAGE_SIZES arrays that are returned by getConfigInfo().

  const VALID_ASPECT_RATIOS = [
    "1:1",
    "2:3",
    "3:2",
    "3:4",
    "4:3",
    "4:5",
    "5:4",
    "9:16",
    "16:9",
    "21:9",
  ];
  const VALID_IMAGE_SIZES = ["1K", "2K", "4K"];

• gemini-image.js:6-7 (schema)

  Default and fallback model constants (DEFAULT_MODEL and FALLBACK_MODEL) used in the configuration info returned by getConfigInfo().

  const DEFAULT_MODEL = "gemini-3-pro-image-preview";
  const FALLBACK_MODEL = "gemini-2.5-flash-image";