asset-gateway

name	asset-gateway
description	Generates images, videos, and other assets using built-in tools. Use when the user asks to create or edit images, generate videos, or produce other media assets.

Asset Generation

Use the built-in generate_image and generate_video tools directly — do NOT use bash CLI.

Image Generation

New image from text

generate_image(prompt="a medieval castle at sunset", size="1024x1024")

Edit an existing image (using URL from previous result)

generate_image(
  prompt="Add a moat around the castle",
  input_image="https://asset.origingame.dev/assets/xxx.png",
  edit_mode="edit"
)

Edit modes

Mode	Use when
edit	General edits based on prompt (default)
inpaint	Fill in or replace specific areas
restyle	Keep subject, change artistic style
expand	Extend the image canvas

Transparent background

generate_image(prompt="a game icon of a fire sword", transparent=true)

Reference images for style guidance

generate_image(
  prompt="a warrior in this art style",
  reference_images=["https://...style-ref.png"]
)

Video Generation

Text to video

generate_video(prompt="Slow cinematic fly-through of a mossy temple at sunrise")

Image to video (animate a still image)

generate_video(
  prompt="The character waves and blinks",
  input_image="https://asset.origingame.dev/assets/xxx.png"
)

Editing Workflow

1. Generate an image → tool returns a URL
2. The URL is displayed inline in the conversation
3. User can annotate (draw arrows, add notes) or request edits via text
4. Pass the URL back as input_image for the next edit — no re-upload needed
5. Repeat until satisfied

Choosing Tools

Goal	Tool
Still image creation	generate_image
Image editing / iteration	generate_image with input_image
Motion clip / animation	generate_video
Animate a still image	generate_video with input_image

Notes

• Results are URLs — they display inline in the conversation automatically.
• For editing, pass the URL from a previous result directly as input_image.
• Local file paths also work as input_image — they are uploaded automatically.
• Do NOT use asset-gateway CLI through bash — use the tools directly.