How to automatically download invoices from vendor portals (2026): invoice retrieval by your AI agent

Automate downloading invoices from vendor portals

Reduck lets your AI agent automatically download invoices from vendor portals that never email a PDF, for founders, bookkeepers and accounts payable teams. It opens each billing portal in your own signed-in browser and sends the month's invoices on. Those vendors send a payment notice, and the PDF stays behind a login on their billing portal: the OpenAI API, Atlassian, Vercel, Cloudflare and many more. Without it, someone logs in to each vendor portal at month-end, finds the billing page, downloads the invoice and renames it, one vendor at a time.

TL;DR

• Your agent opens each vendor portal in your own signed-in Chrome, lists the invoices and downloads the PDFs.
• No portal passwords go to a cloud service, and there is no connector to set up per vendor.
• About 40 billing portals have a ready-made script; for a missing one, the agent writes it the first time.
• It sends the invoices to your accountant or AP inbox, and lists any vendor it could not reach.

Why invoice retrieval from vendor portals stays manual

• The invoice is not in your inbox. An email rule or an inbox scanner only catches the vendors that attach a PDF.
• Every portal is different. Each vendor puts its invoices in a different menu, with a different download button.
• There is rarely an API. Billing portals are made for people, so an accounting tool has no shortcut to call.
• Logins get in the way. A service that signs in from its own servers meets 2FA prompts and blocked logins.
• One missing invoice holds up the close. With a dozen vendors, one forgotten portal is enough.

How to download invoices from vendor portals with Reduck

1. Pair your browser. Install the Reduck extension in the Chrome where you are signed in to your vendors, and connect your agent (Claude, ChatGPT, Cursor or any MCP client) to Reduck.
2. Ask for the month. "Download my September invoices from OpenAI, Atlassian, Vercel and Cloudflare and send them to [email protected]."
3. The agent opens each portal. It runs each vendor's script in your browser session and lists the invoices on its billing page.
4. It downloads the PDFs. Each file is named by vendor, month and amount. Invoices hosted by Stripe share one download script.
5. It sends them on. It emails each invoice from your Gmail, or saves them together in one folder.
6. It reports what is missing. A vendor it could not reach, or with no invoice for the month, is listed apart.
7. It runs again next month. Save the prompt and ask your agent to run it at the start of each month.

Ways to collect invoices from vendor portals

• Cloud invoice collectors (GetMyInvoices, invoicefetcher): the widest portal lists and an archive. They sign in from their own servers with the credentials you give them.
• Receipt capture tools (Dext, Hubdoc): best for invoices that arrive by email or upload. Dext documents Invoice Fetch for a list of supported suppliers.
• RPA or custom scripts: full control, but each portal is a script to write and keep working.
• An AI agent in your own browser (Reduck): no credentials leave your computer, and the agent writes the script for a new portal. Fewer ready-made portals than the collectors, mostly SaaS, AI and cloud tools.

The GetMyInvoices alternative page compares the collectors side by side.

Supported vendor portals

• AI tools: OpenAI API, ChatGPT, Claude, Anthropic Console, Cursor, Hugging Face. See AI tool invoices.
• Cloud and developer tools: Vercel, Supabase, Neon, Cloudflare, DigitalOcean, GitHub, Hostinger. See cloud and dev tool invoices.
• Workspace apps: Slack, Google Workspace, Atlassian, Asana, Miro, Linear, ClickUp, Airtable, Dropbox, Lucid, HubSpot, Zapier. See workspace app invoices.
• Anything billed through Stripe, with the shared download script.

Who it's for

• Founders who collect their own invoices for a bookkeeper
• Accounts payable and finance teams closing the month
• Accountants who collect invoices for several clients