Is the workflow free to use?

The n8n workflow itself is free; you pay only for the connected services (Google, Telegram bot, Anthropic/OpenAI usage).

What credentials do I need?

Google Drive and Sheets OAuth, a Telegram bot token plus chat ID, and an Anthropic or OpenAI API key.

How do I import this into n8n?

Download the JSON workflow file and import it directly from the n8n editor menu.

PDF Invoice Data Extraction & Tracking with Google Drive, Claude AI & Telegram

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Extracts invoice data from Google Drive PDFs and logs it to Sheets with Telegram alerts.

n8nAI & LLMIntermediate👁 53 views

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Updated 2026-06-15

What this workflow does

This n8n workflow watches a Google Drive folder for new invoice PDFs, extracts structured data via the LangChain Information Extractor and connected LLM nodes, then records the results in Google Sheets while sending a Telegram alert.

It is intended for billing teams and finance staff who need reliable, automated intake and tracking of invoice information without manual data entry.

Who is this for?

Billing teams, accountants, and finance staff at small-to-medium businesses who process incoming invoices regularly.

What problem it solves

Manually reading PDF invoices, copying data into spreadsheets, and notifying teams wastes time and introduces errors.

Live workflow preview

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Open the template on n8n to import and run it. View source template →

What it automates

Monthly client invoicing

A consulting firm drops client PDFs into a Drive folder and the workflow logs amounts and due dates automatically.

Vendor bill tracking

An operations team receives supplier invoices and gets Telegram alerts with extracted totals before payment deadlines.

Freelancer bookkeeping

A solo operator uploads project invoices and maintains a clean Google Sheet record without manual entry.

How the workflow works

The 7 nodes in this automation, in order.

1Google SheetsgoogleSheets
2Telegramtelegram
3Google DrivegoogleDrive
4Basic LLM Chain@n8n/n8n-nodes-langchain.chainLlm
5Anthropic Chat Model@n8n/n8n-nodes-langchain.lmChatAnthropic
6OpenAI Chat Model@n8n/n8n-nodes-langchain.lmChatOpenAi
7Information Extractor@n8n/n8n-nodes-langchain.informationExtractor

Apps & integrations used

Google SheetsTelegramGoogle DriveBasic LLM ChainAnthropic Chat ModelOpenAI Chat ModelInformation Extractor

How to set up PDF Invoice Data Extraction & Tracking with Google Drive, Claude AI & Telegram

1Connect Google Drive OAuth2 and enter the target folder ID in the trigger node.
2Add the file-download node followed by a PDF text extraction step.
3Insert the Information Extractor node and map fields like invoice number, client, amount, and due date.
4Configure the Google Sheets node to append extracted rows to your tracking sheet.
5Add an Anthropic Chat Model node to format a readable Telegram message.
6Set up the Telegram node with your bot token and chat ID to send the alert.

How to customize this workflow

→Swap Anthropic Claude for OpenAI Chat Model if preferred for message formatting.
→Change the trigger from Google Drive to email attachment or Dropbox folder.
→Add a Basic LLM Chain node to validate extracted amounts before writing to Sheets.
→Insert a filter node to skip invoices below a certain amount.