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Mynth supports both simple prompt strings and structured prompt objects.

Simple prompts

prompt: "An orange cat astronaut on the moon";
Use this form when you want the smallest possible request.

Structured prompts

Use the structured form when you need negative prompts or explicit enhancement control:
prompt: {
  positive: "Luxury skincare product photo on sculpted stone",
  negative: "text, watermark, blurry details",
  enhance: "prefer_magic",
}

Enhancement modes

prompt.enhance controls whether Mynth rewrites your prompt before sending it to the model:
  • false - no enhancement, prompt is sent as-is
  • "prefer_magic" - Mynth may rewrite the prompt for better results
  • "prefer_native" - Mynth may rewrite the prompt, preferring the model’s native style

Negative prompts

Negative prompts are supported through the structured prompt object:
prompt: {
  positive: "Editorial portrait of a cyclist in the rain",
  negative: "text, watermark, extra limbs",
  enhance: false,
}
Whether negative prompts are meaningful depends on the model you selected, so explicit model choice matters here.