FinanceFREE

Stop Typing Payments — AI Extract the invoice data in n8n

Every time a new payment is recorded, this workflow hands it to OpenAI, which reads the PDF and extracts vendor, amount, due date and line items. You get invoice data captured with zero manual typing without lifting a finger.

difficulty Advancedsetup 45 minresult Invoice data captured with zero manual typing—
—
  1. 1

    Trigger when a new payment is recorded

    A Stripe Trigger starts the workflow the moment a new payment is recorded.

  2. 2

    Hand it to the AI agent

    An AI Agent node running OpenAI reads the PDF and extracts vendor, amount, due date and line items. The prompt is pre-written and scoped to this one job so results stay consistent.

  3. 3

    Deliver the extraction

    The result is sent to Slack — with the original for context.

  4. 4

    Add a safety net (optional)

    Insert an IF/human-approval step before anything is published or emailed, so you stay in control until you trust the output.

Frequently asked questions

How do I import the workflow into n8n?

Download the JSON, then in n8n open a new workflow, choose ⋯ → Import from file, and select it. Every trigger, node and connection appears on the canvas; you just add your credentials and activate it.

How much does the AI part cost to run?

Pennies. Each run sends a small amount of text to the model, so most teams spend a few dollars a month even at hundreds of runs. You set the model and can cap volume in n8n, so costs never surprise you.

Can I trust the AI to get the extraction right?

The prompt is tightly scoped to one job and you can add a human-approval step in n8n before anything is sent or published. Start with review-mode for a week, and once you trust the output, switch it to fully automatic.

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