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Extract transactions from images using unli.dev Vision API & Telegram

Khairul MuhtadinKhairul Muhtadin
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2/3/2026
Task ManagementGoogle KeepAutomationTodoistProductivity
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unli.dev + n8n + Telegram

Image Analyzer turns images sent to your Telegram bot into clean, Markdown-formatted transaction text using unli.dev Vision API. Instead of typing numbers and dates manually, the workflow downloads the photo, converts it to base64, analyzes it via API, and replies in-chat with extracted details, saving time and reducing errors.

💡 Why Use Image Analyzer?

  • Save time: Process images in seconds, cutting manual entry by up to 90%.
  • Solve pain points: No more blurry screenshot frustration; get clean Markdown transactions.
  • Faster outcomes: Per-image turnaround under 15s.
  • Competitive edge: Give staff/customers structured feedback instantly

⚡ Perfect For

  • Small business owners: Capture receipts/payments quickly.
  • Accountants/bookkeepers: Intake client receipts with fewer typos.
  • Ops/support teams: Turn messy screenshots into actionable records.

🔧 How It Works

  1. Trigger: Telegram bot receives photo.
  2. Process: Convert to base64 & prepare request.
  3. Smart Logic: Call unli.dev Vision API for text extraction.
  4. Output: Send Markdown result back to Telegram.
  5. Optional: Save structured data to Google Sheets, Airtable, or DB.

🛠 Quick Setup

  1. Import workflow JSON to your n8n instance.
  2. Add credentials: Telegram bot + unli.dev API key.
  3. Customize the system prompt (default: extract the transaction in Markdown).
  4. Test by sending a real photo to your bot.

🧩 You’ll Need

Made by: Khaisa Studio
Category: Image Analysis

Contact: Get in touch

Extract Transactions from Images using UnliDev Vision API and Telegram

This n8n workflow automates the process of extracting transaction details from images using the UnliDev Vision API and then sends the extracted information to a Telegram chat. It's designed to simplify expense tracking or data entry from receipts and other transactional documents.

What it does

  1. Listens for new images on Telegram: The workflow is triggered whenever a new image is sent to a configured Telegram bot.
  2. Prepares image for API: It takes the received image file and converts it into a base64 encoded string, which is required by the UnliDev Vision API.
  3. Sends image to UnliDev Vision API: The base64 encoded image is sent as a POST request to the UnliDev Vision API's /extract/transactions endpoint for OCR and transaction data extraction.
  4. Processes API response: The workflow receives the JSON response from the UnliDev Vision API, which contains the extracted transaction details.
  5. Formats output for Telegram: It then formats the extracted data into a human-readable message.
  6. Sends extracted data to Telegram: Finally, the formatted transaction details are sent back to the Telegram chat where the image was originally received.

Prerequisites/Requirements

  • n8n Instance: A running instance of n8n.
  • Telegram Bot: A Telegram bot token and a chat ID to listen for messages and send responses.
  • UnliDev Vision API Key: An API key for the UnliDev Vision API to access its /extract/transactions endpoint.

Setup/Usage

  1. Import the workflow: Import the provided JSON into your n8n instance.
  2. Configure Telegram Trigger:
    • Open the "Telegram Trigger" node.
    • Select or create a new Telegram API credential. You'll need your Telegram Bot Token.
    • Ensure the bot is added to the chat where you intend to send images.
  3. Configure "Edit Fields (Set)" node: This node is likely used to prepare the image data for the API. You might need to adjust how the image file is extracted from the Telegram message and converted to base64. The current setup implies it's handling the file_id from the Telegram message.
  4. Configure "HTTP Request" node:
    • Open the "HTTP Request" node.
    • Set the URL to your UnliDev Vision API endpoint (e.g., https://api.unlidev.com/vision/extract/transactions).
    • Set the Method to POST.
    • Add a Header for Authorization with your UnliDev Vision API Key (e.g., Bearer YOUR_UNLIDEV_API_KEY).
    • Configure the Body to send the base64 encoded image data. This will likely involve referencing the output of the "Edit Fields (Set)" node.
  5. Configure "Code" node: This node is responsible for parsing the API response and formatting the message. You may need to adjust the JavaScript code within this node to match the exact structure of the UnliDev Vision API response and your desired output format for Telegram.
  6. Configure Telegram node:
    • Open the "Telegram" node.
    • Select the same Telegram API credential used in the trigger.
    • Set the Chat ID to the ID of the Telegram chat where you want to send the extracted information. This can often be dynamically pulled from the trigger node's output.
    • Configure the Text field to use the output of the "Code" node, which contains the formatted transaction details.
  7. Activate the workflow: Once all credentials and nodes are configured, activate the workflow.

Now, whenever you send an image to your configured Telegram bot, the workflow will process it, extract transaction details, and send them back to the chat.

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