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POST

Authorizations

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x-magnific-api-key
string
header
required

Your Magnific API key. Required for authentication. Learn how to obtain an API key

Body

application/json
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prompt
string
required

Text description of the image or edit you want to generate.

FLUX Kontext Max is the highest-quality tier of the Kontext family, delivering maximum prompt adherence and detail for context-aware image editing and generation.

Tips for better results:

  • Be specific about subjects, scenes, and visual details
  • Describe the exact edit or transformation you want
  • Mention lighting, atmosphere, and art style if desired
Example:

"a beautiful sunset over the ocean with dramatic clouds"

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input_image
string<uri>
required

URL to the input image that guides the generation process. The model uses this image as a reference while producing the output.

Example:

"https://example.com/reference-image.jpg"

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input_image_2
string<uri> | null

Optional URL to a second reference image. Flux Kontext Max supports up to 4 input images.

Example:

"https://example.com/reference-image-2.jpg"

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input_image_3
string<uri> | null

Optional URL to a third reference image. Flux Kontext Max supports up to 4 input images.

Example:

"https://example.com/reference-image-3.jpg"

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input_image_4
string<uri> | null

Optional URL to a fourth reference image. Flux Kontext Max supports up to 4 input images.

Example:

"https://example.com/reference-image-4.jpg"

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prompt_upsampling
boolean
default:false

Whether to perform upsampling on the prompt. If active, automatically modifies the prompt for more creative generation.

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seed
integer | null

Optional seed for reproducibility. If not provided, a random seed will be used.

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guidance
number | null
default:3

Guidance scale for the generation. Higher values make the model follow the prompt more closely.

Required range: 1 <= x <= 10
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steps
integer | null
default:50

Number of inference steps. More steps generally produce higher quality but take longer.

Required range: 1 <= x <= 100
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aspect_ratio
enum<string>
default:square_1_1

Image size with the aspect ratio. The aspect ratio is the proportional relationship between an image's width and height, expressed as *_width_height (e.g., square_1_1, widescreen_16_9). It is calculated by dividing the width by the height.
If not present, the default is square_1_1.

Available options:
square_1_1,
classic_4_3,
traditional_3_4,
widescreen_16_9,
social_story_9_16,
standard_3_2,
portrait_2_3,
horizontal_2_1,
vertical_1_2,
social_post_4_5
Example:

"square_1_1"

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safety_tolerance
integer
default:2

Tolerance level for input and output moderation. Between 0 and 6, 0 being most strict, 6 being least strict.

Required range: 0 <= x <= 6
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output_format
enum<string> | null

Format of the output image

Available options:
jpeg,
png
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webhook_url
string<uri>

Optional callback URL that will receive asynchronous notifications whenever the task changes status. The payload sent to this URL is the same as the corresponding GET endpoint response, but without the data field.

Example:

"https://www.example.com/webhook"

Response

OK - Task created successfully

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data
object
required
Example: