Airparser takes unstructured documents — emails, PDFs, scanned forms, handwritten notes — and pulls structured fields out of them using GPT-based extraction rules the user defines. The workflow is: import a document, describe what fields you want, and the engine returns a clean JSON or CSV you can route into Google Sheets, a CRM, or a downstream automation. It holds up well for finance teams processing consistent invoice formats and HR teams ingesting CVs at volume. The ceiling appears when document layouts vary enough that a single extraction schema stops covering all variants — teams end up maintaining multiple schemas rather than one. Documents that require cross-referencing data across pages or multi-table reconciliation push outside what the extraction model reliably handles.