Flux 2 Lora Gallery

POST/v1/run

Flux 2 Lora Gallery Add Background by BFL - AI-powered image editing, style transfer, and transformation. Edit photos with natural language instructions, remove backgrounds, change styles, and enhance images effortlessly.

Request body

Submit an async generation request. The model field selects the model; other fields are model-specific input parameters.

stringmodelrequired

Model identifier. Set to bfl/flux-2/lora-gallery/add-background.

Default: bfl/flux-2/lora-gallery/add-background

stringpromptrequired

The prompt describing the background to add. Must start with 'Add Background' followed by your description.

Default: Add Background forest

Optional<array<string>>images

The URLs of the images. Provide an image with a white or clean background.

Optional<string>output_format

The format of the output image

Allowed values: png, jpeg

Default: png

Optional<number>lora_scale

The strength of the add background effect.

Range: 0 to 2

Default: 1

Optional<string>aspect_ratio

The aspect ratio of the generated image.

Allowed values: 21:9, 16:9, 3:2, 4:3, 5:4, 1:1, 4:5, 3:4, 2:3, 9:16

Optional<integer>seed

Random seed for reproducibility. Same seed with same prompt will produce same result.

Optional<integer>num_inference_steps

Number of denoising or inference steps to run when supported.

Range: 4 to 50

Default: 40

Optional<number>guidance_scale

Request parameter supported by this model.

Range: 0 to 20

Default: 2.5

Response Schema

The submit endpoint returns an accepted generation task. Poll the result endpoint with the returned id for terminal outputs or errors.

Optional<string>error

Error message if the task failed. Empty on success.

stringidrequired

Unique identifier for the generation task.

Optional<string>model

Model ID used for the prediction.

Optional<array>outputs

Array of generated content. Empty when status is not completed.

stringstatusrequired

Status of the task: pending, running, completed, failed, or timeout.

Allowed values: pending, running, completed, failed, timeout

Model capabilities

array<string>capability_tagsrequired

Capabilities declared by the model registry.

Default: image-to-image

stringexecution_moderequired

Execution mode declared by the model registry.

Default: async

# 1. Submit a generation request
curl -X POST https://api.sandbase.ai/v1/run \
  -H "Authorization: Bearer $SANDBASE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "bfl/flux-2/lora-gallery/add-background",
  "prompt": "Add Background forest",
  "output_format": "png",
  "aspect_ratio": "21:9"
}'

# 2. If the response is still running, poll the returned id
curl https://api.sandbase.ai/v1/run/run_abc123 \
  -H "Authorization: Bearer $SANDBASE_API_KEY"

Response202 Accepted

{
  "id": "run_abc123",
  "model": "bfl/flux-2/lora-gallery/add-background",
  "status": "running",
  "outputs": []
}