Generate Edit Schema

Detect fields in a PDF form and synchronously return an edit schema payload. Use this endpoint when you want Extend to bootstrap an `EditRootJSON` schema from an existing form, optionally mapping an existing schema onto the detected fields. This endpoint returns the generated schema directly. There are no schema generation run resources to poll or delete. For more details, see the [Generate Edit Schema guide](https://docs.extend.ai/2026-02-09/editing/generate-edit-schema) and the [Edit File guide](https://docs.extend.ai/2026-02-09/editing/edit).