regenerate-asset

name	regenerate_asset
description	Regenerate a generative asset image using mcp__mcp-image__generate_image. Updates the asset's prompt and saves the previous prompt to promptHistory in GenerativeAssetData.ts.

Regenerate Asset Skill

This skill regenerates an image for a named generative asset defined in src/rendering/GenerativeAssetData.ts.

Arguments

The skill accepts the following arguments as a single string:

• asset name (required): The name field of the asset to regenerate (e.g., player_spritesheet, bg_greenhill).
• new prompt (optional): A replacement prompt. If not provided, reuse the existing prompt.
• quality (optional): fast, balanced, or quality. Defaults to omitting (server default).

Format: <asset_name> [--prompt "new prompt text"] [--quality fast|balanced|quality]

Procedure

1. Read src/rendering/GenerativeAssetData.ts to find the asset entry matching the given name.

   • If no match is found, report the error and list available asset names.

2. Read the asset's current image from public/<outputFile> to understand the existing visual content before regenerating.

3. Determine the new prompt:

   • If a --prompt was provided, use it as the new prompt text.
   • Otherwise, reuse the existing prompt.prompt text unchanged.

4. Save the current prompt to promptHistory:

   • Copy the asset's current prompt object (including seed and extraParameters if present) and append it to the end of the promptHistory array.
   • Use the Edit tool to modify src/rendering/GenerativeAssetData.ts in place.
   • Ensure the existing promptHistory array is preserved.

5. Update the asset's prompt field:

   • Set prompt.prompt to the new prompt text.
   • Clear prompt.seed and prompt.extraParameters (they belong to the old generation).
   • Use the Edit tool to modify src/rendering/GenerativeAssetData.ts in place.

6. Call mcp__mcp-image__generate_image with:

   • prompt: The new prompt text.
   • fileName: The asset's name (e.g., player_spritesheet).
   • purpose: The asset's purpose field value.
   • quality: If specified by the user, pass it through.
   • The tool will output the generated image to a path.

7. Copy the generated image to public/<outputFile> (the asset's outputFile path, relative to the project root under public/). Use cp via Bash.

8. If the generation tool returns a seed or other parameters, update the asset's prompt.seed and/or prompt.extraParameters in GenerativeAssetData.ts accordingly.

9. Read the newly generated image to visually verify the result, and report to the user what was generated.

Important Notes

• The Prompt type is defined in src/rendering/GenerativeAsset.ts:

  interface Prompt {
    prompt: string
    seed?: number
    extraParameters?: PromptParameter[]
  }
  

• promptHistory does NOT include the current prompt — it is a log of previous prompts only.
• Always preserve the exact structure of GenerativeAssetData.ts — use Edit, not Write, to make surgical changes.
• Asset outputFile paths start with /assets/...; the actual files live under public/assets/... relative to project root.
• Follow the image-generation skill's prompt best practices when crafting or enhancing prompts.