Build a Custom AI Analyzer for Your Own Invoice Format in Power Automate: A 3-Step Dropbox Workflow
A Custom AI Analyzer Template is a named JSON schema you define in the PDF4me dev portal that tells the AI which fields to extract from a specific document type. This walkthrough builds an Analyzer for PDF4me's own SaaS subscription invoices (33 fields: vendor address block, Swiss MWST rate, subscription Id, line items, discount details), then calls it from a 3-step Power Automate flow that reads a PDF from Dropbox and returns structured JSON.
The built-in default_invoice_extraction covers generic invoices, but real AP teams have vendor-specific layouts, custom line-item columns, jurisdiction-specific tax fields, and subscription metadata that the generic schema misses. Building a custom Analyzer once gets you exact-match extraction forever, no per-field prompting required, no follow-up logic to clean up the response.