GET

/v1/schemas/fal/image/fal-ai/bytedance/seedream/v4.5/text-to-image

Accept:

kind inputactivity imagehash 9eafb57b…extracted Aug 8, 2026version currentsource upstream spec ↗

field	recorded source
schema	Source linked above. Source trace `930c98d47e4b93d7284b29af65cfb3993740c8f4bc8ddf4d7263706fb4753046` { "fetchedAt": 1786165357, "extractorVersion": "1", "verifiedAt": null }

Request body

7 properties · 1 required · 1 $defs

property	type	description	constraints
prompt*	string	The text prompt used to generate the image
seed	integer	Random seed to control the stochasticity of image generation.	nullable
num_images	integer	Number of separate model generations to be run with the prompt.	1 ≤ n ≤ 6 · default: 1
image_size	ImageSize \| enum	The size of the generated image. Width and height must be between 1920 and 4096, or total number of pixels must be between 25601440 and 40964096.	default: {"height":2048,"width":2048}
sync_mode	boolean	If `True`, the media will be returned as a data URI and the output data won't be available in the request history.	default: false
max_images	integer	If set to a number greater than one, enables multi-image generation. The model will potentially return up to `max_images` images every generation, and in total, `num_images` generations will be carried out. In total, the number of images generated will be betw…	1 ≤ n ≤ 6 · default: 1
enable_safety_checker	boolean	If set to true, the safety checker will be enabled. Disabling it requires account authorization; unauthorized requests are always checked.	default: true

Types

1 $defs

ImageSizeobject

height	integer	The height of the generated image.	0 < n ≤ 14142 · default: 512
width	integer	The width of the generated image.	0 < n ≤ 14142 · default: 512

Validate a payload

before you spend tokens

shell

$ curl -X POST https://modelschemas.com/v1/validate \
    -d '{"provider":"fal","endpointId":"fal-ai/bytedance/seedream/v4.5/text-to-image","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}