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Analyze contract risk from Google Drive PDFs with OpenAI, Claude, Gemini, Sheets and Gmail

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Created by: Javed Iqbal || javediqbal
Javed Iqbal

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Last update 5 hours ago

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Quick overview

This workflow watches a Google Drive folder for new PDF contracts, extracts their text, analyzes them with OpenAI, Anthropic Claude, or Google Gemini to produce a structured risk assessment, logs the results to Google Sheets, and sends a Gmail alert when the risk score crosses a threshold.

How it works

  1. Triggers when a new file is created in a specified Google Drive folder.
  2. Filters events to continue only when the uploaded file is a PDF.
  3. Downloads the PDF from Google Drive, extracts its text, and trims the content to a configurable maximum length.
  4. Sends the contract text to the selected AI provider (OpenAI, Anthropic Claude, or Google Gemini) to extract structured contract fields, risk flags, a summary, and a 0–100 risk score.
  5. Normalizes the AI output into a single flat record with a calculated risk level and an alert decision based on your threshold.
  6. Appends the normalized analysis as a new row in a Google Sheets tab.
  7. Sends a formatted Gmail alert email with the summary and risk flags when the contract meets or exceeds the risk threshold.

Setup

  1. Connect credentials for Google Drive, Google Sheets, and Gmail in n8n.
  2. Add credentials for one AI provider you plan to use: OpenAI, Anthropic, or Google Gemini.
  3. Select the Google Drive folder to watch and update the Configuration values (aiProvider, googleSheetId, sheetTabName, alertEmail, riskAlertThreshold, and maxCharacters).
  4. Create or choose a Google Sheets spreadsheet and ensure the target tab name (for example, “Contracts”) exists or matches the configured sheetTabName.