This article provides a complete, practical walkthrough of the Code Manual Automation Webhook n8n agent. It connects HTTP Request, Webhook across approximately 1 node(s). Expect a Intermediate setup in 15-45 minutes. One‑time purchase: €29.

What This Agent Does

This agent orchestrates a reliable automation between HTTP Request, Webhook, handling triggers, data enrichment, and delivery with guardrails for errors and rate limits.

It streamlines multi‑step processes that would otherwise require manual exports, spreadsheet cleanup, and repeated API requests. By centralizing logic in n8n, it reduces context switching, lowers error rates, and ensures consistent results across teams.

Typical outcomes include faster lead handoffs, automated notifications, accurate data synchronization, and better visibility via execution logs and optional Slack/Email alerts.

How It Works

The workflow uses standard n8n building blocks like Webhook or Schedule triggers, HTTP Request for API calls, and control nodes (IF, Merge, Set) to validate inputs, branch on conditions, and format outputs. Retries and timeouts improve resilience, while credentials keep secrets safe.

Third‑Party Integrations

• HTTP Request
• Webhook

Import and Use in n8n

1. Open n8n and create a new workflow or collection.
2. Choose Import from File or Paste JSON.
3. Paste the JSON below, then click Import.
4. Show n8n JSON

   Title:
   Automate Receipt OCR with n8n: Extract Invoice Data from Google Drive to Google Sheets
   
   Meta Description:
   Learn how to automate invoice and receipt recognition using OCR with n8n. This no-code workflow connects Google Drive, RapidAPI, and Google Sheets to transform uploaded receipts into structured JSON data.
   
   Keywords:
   n8n automation, OCR invoice processing, Google Drive OCR, Google Sheets automation, no-code OCR, invoice data extraction, RapidAPI OCR, digital receipt parsing, OCR workflow, document automation
   
   Third-Party APIs Used:
   
   - Google Drive API (for file monitoring and download)
   - Google Sheets API (for data logging and updating)
   - RapidAPI: Receipt and Invoice OCR API by OakPDF (for optical character recognition/receipt data parsing)
   
   Article:
   
   Automate Receipt Scanning with n8n: OCR from Google Drive to Google Sheets
   
   Managing receipts and invoices manually can be time-consuming and error-prone—especially if your records span hundreds of documents. Thanks to low-code automation tools like n8n and powerful third-party APIs, you can now set up a fully automated workflow to scan, recognize, and extract structured data from any uploaded receipt or invoice, saving time and improving accuracy.
   
   In this article, we walk you through an elegant n8n workflow that accomplishes just that. This automation connects Google Drive and Google Sheets with the OakPDF Receipt and Invoice OCR API via RapidAPI, extracting key invoice data and logging it in real time to a spreadsheet.
   
   🛠️ Workflow Overview
   
   This n8n workflow is designed to:
   
   - Monitor a specific Google Drive folder for new receipts or invoices in PDF, PNG, or JPG format.
   - Automatically download any new file added to that folder.
   - Send the file via HTTP POST to the Receipt and Invoice OCR API for text recognition and parsing.
   - Deserialize the JSON response and extract important fields like vendor name, total amount, and item line details.
   - Save the structured data neatly into Google Sheets for future reporting, tracking, or accounting.
   
   You can also trigger it manually using the “Test workflow” button in n8n, in addition to its automatic trigger on new files.
   
   Setup Guide: Step-by-Step
   
   1. Set Up Your Google Services
   First, you need to authorize n8n to access your Google Drive and Google Sheets accounts. The workflow depends heavily on these integrations to both fetch files and log processed data.
   
   - Google Drive OAuth2
   - Google Sheets OAuth2
   
   Make sure the Drive folder and Google Sheet document you want to use are properly shared with your connected Google account.
   
   2. Connect to the OCR API on RapidAPI
   This system uses the Receipt and Invoice OCR API by OakPDF via RapidAPI. To access it:
   
   - Head to https://rapidapi.com/restyler/api/receipt-and-invoice-ocr-api
   - Subscribe for an API key
   - In n8n, create HTTP credentials using the generic HTTP Header Auth method
   - Use this API key in an "HTTP Request" node to authenticate with the OCR API
   
   You can try sample files on their OCR playground at https://ocr.oakpdf.com before integrating fully.
   
   3. Configure the n8n Workflow
   Once you’ve imported the workflow JSON, be aware of a small glitch where trigger nodes may not automatically reconnect. You’ll need to ensure that the Manual Trigger and Google Drive Trigger nodes are both connected to:
   
   - “Load files from Google Drive folder”
   - “Get already processed rows from Sheets”
   
   This ensures both manual and automation triggers activate the full execution chain.
   
   4. Prevent Duplicate Processing
   To avoid double-processing, the workflow joins the list of new Drive files with IDs already stored in the destination Google Sheet. Any files already processed are filtered out before going through the OCR step. This ensures your Sheet only receives new entries.
   
   5. Parse and Save OCR Data
   Once a new file is uploaded, it’s processed by the OakPDF OCR API. The response is parsed through a JavaScript code node that transforms the response JSON and extracts readable fields such as:
   
   - Company name and address
   - Invoice amounts
   - Currency
   - Line item description and cost
   
   Finally, this structured data is appended to your Google Sheet using matching columns based on the file ID, preventing duplication.
   
   💡 Bonus Features
   
   - The API supports multiple document types (e.g., medical, legal, financial). You can tweak the settings sent in the "HTTP Request" to change the documentType as needed.
   - The whole setup is modular and easy to extend. For example, you can email the extracted data, post it to a Slack channel, or feed it into QuickBooks.
   - Ideal for freelancers, accountants, or any team handling recurring digital receipts.
   
   --- 
   
   🔗 Additional Resources
   
   - Demo Video: https://youtu.be/mGPt7fqGQD8
   - Google Sheets Template: https://docs.google.com/spreadsheets/d/1G0w-OMdFRrtvzOLPpfFJpsBVNqJ9cfRLMKCVWfrTQBg
   - API Playground: https://ocr.oakpdf.com/
   - Documentation: https://docs.n8n.io/integrations/
   
   Whether you're trying to streamline bookkeeping or build a smarter document pipeline, this workflow is a powerful and accessible way to automate invoice OCR without writing code. All it takes is a few minutes of setup—and your accounting becomes much hands-off.
   
   For complex document formats or enterprise integration inquiries, you can reach out directly to the creator at contact@scrapeninja.net or on LinkedIn: https://www.linkedin.com/in/anthony-sidashin/

5. Set credentials for each API node (keys, OAuth) in Credentials.
6. Run a test via Execute Workflow. Inspect Run Data, then adjust parameters.
7. Enable the workflow to run on schedule, webhook, or triggers as configured.

Tips: keep secrets in credentials, add retries and timeouts on HTTP nodes, implement error notifications, and paginate large API fetches.

Validation: use IF/Code nodes to sanitize inputs and guard against empty payloads.

Why Automate This with AI Agents

AI‑assisted automations offload repetitive, error‑prone tasks to a predictable workflow. Instead of manual copy‑paste and ad‑hoc scripts, your team gets a governed pipeline with versioned state, auditability, and observable runs.

n8n’s node graph makes data flow transparent while AI‑powered enrichment (classification, extraction, summarization) boosts throughput and consistency. Teams reclaim time, reduce operational costs, and standardize best practices without sacrificing flexibility.

Compared to one‑off integrations, an AI agent is easier to extend: swap APIs, add filters, or bolt on notifications without rewriting everything. You get reliability, control, and a faster path from idea to production.

Best Practices

• Credentials: restrict scopes and rotate tokens regularly.
• Resilience: configure retries, timeouts, and backoff for API nodes.
• Data Quality: validate inputs; normalize fields early to reduce downstream branching.
• Performance: batch records and paginate for large datasets.
• Observability: add failure alerts (Email/Slack) and persistent logs for auditing.
• Security: avoid sensitive data in logs; use environment variables and n8n credentials.

FAQs

Can I swap integrations later? Yes. Replace or add nodes and re‑map fields without rebuilding the whole flow.

How do I monitor failures? Use Execution logs and add notifications on the Error Trigger path.

Does it scale? Use queues, batching, and sub‑workflows to split responsibilities and control load.

Is my data safe? Keep secrets in Credentials, restrict token scopes, and review access logs.