FLUX.2 [flex]

https://mcp.app.layer.ai/mcp

execute_forge({
  "base_model_id": "flux-2-flex",
  "prompt": "A crystal sword icon on a transparent background, game UI art",
  "batch_size": 4,
  "width": 1024,
  "height": 1024
})

# Start the generation — returns an inference id straight away.
curl -X POST https://api.app.layer.ai/api/v2/workspaces/$WORKSPACE_ID/base-models/bfl-flux-2-flex/inferences \
  -H "Authorization: Bearer $LAYER_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
        "prompt": "A crystal sword icon on a transparent background, game UI art"
      }'

# Poll until status is "complete" — the response then carries the asset URLs.
curl https://api.app.layer.ai/api/v2/workspaces/$WORKSPACE_ID/inferences/$INFERENCE_ID \
  -H "Authorization: Bearer $LAYER_TOKEN"

prompt

string

Describe what to generate, or the change to make.

aspect_ratio

enumdefault SQUARE_1K10 options

The shape and size of the output.

seed

integer

The starting point for the model's randomness. The same seed and settings give the same result.

guidance_scale

numberdefault 3.51.5–10

How closely the result follows the prompt. Lower gives the model more freedom.

inference_steps

integerdefault 282–50

How many refinement passes the model makes. More add detail and take longer.

transparency

booleandefault false

Output the subject alone, with no backdrop behind it.

guidance_file_init_image

file[]

The image to modify

guidance_file_reference_image

file[]

Guides the edit

output_fit

any

Trim the transparent margin, and place the image on a canvas of a fixed size.

prompt_language

string

The language the prompt is written in, so it reaches the model as you meant it.