# Invoice audit Canonical HTML: https://spoolis.com/docs/invoice-audit. This page is also available in machine-readable Markdown. Compare mapped invoice lines with a record and return measured differences. ## What it does Send CSV or base64 PDF invoice input, record CSV, and a mapping. The comparison returns measured findings and does not approve or reject an invoice. ## Privacy and links Inputs are processed in memory and are not stored. [API reference](/docs/api), [OpenAPI](/openapi.json), [invoice audit tool](/tools/invoice-audit).