Nano Banana Pro API negative prompt correct writing: 3 solutions to completely say goodbye to negativePrompt errors
Many developers migrating from Stable Diffusion or Midjourney to Nano Banana Pro often encounter a confusing 400 error on their first API call: Invalid JSON payload received. Unknown name "negativePrompt" at 'generation_config.image_config': Cannot find field. The error message is blunt but lacks clarity: is the field name misspelled, does it need to be moved, or…
