Automate invoice analysis via Telegram with ChatGPT-4o-mini extraction — n8n Workflow

Medium complexity⚡ Trigger10 nodes🏷️ Invoice Processing👁 1 viewsby Cheng Siong Chin

Overview

Introduction Upload invoices via Telegram, receive structured data instantly. Perfect for accountants and finance teams. How It Works Telegram bot receives invoices, downloads files, extracts data using OpenAI, then returns analysis. Workflow Template Telegram Trigger → Document Check → Get File → HTTP Download → AI Extract → Format Response → Send to Telegram

Workflow Steps Telegram Trigger: Listens for uploads. Document Check: Validates files; routes errors. Get File: Retrieves metadata. HTTP

Nodes used

HTTP RequestTelegramCodeAI AgentOpenAI Chat Model

Workflow Preview

Introduction
Upload invoices via Telegram, receive structured data i
How It Works
Telegram bot receives invoices, downloads files, extrac
Prerequisites
- n8n instance
- Telegram Bot Token
- OpenAI API key
Customization
- Database storage
model
⚡
T
Telegram Trigger
C
Check if Document
Get File from Telegram
HTTP Request - Download …
E
Extract Invoice Data
AI Agent - Analyze Invoice
OpenAI Chat Model
Format Response
Send Analysis to Telegram
Send Error Message
10 nodes9 edges

How it Works

  1. 1

    Trigger

    The workflow starts with a trigger trigger.

  2. 2

    Process

    Data flows through 10 nodes, connecting agent, code, extractfromfile.

  3. 3

    Output

    The workflow completes its automation and delivers the result to the configured destination.

Node Details (10)

HT

HTTP Request

httpRequest

#1
TE

Telegram

telegram

#2
CO

Code

code

#3
AI

AI Agent

n8n-nodes-langchain.agent

#4
OP

OpenAI Chat Model

n8n-nodes-langchain.lmChatOpenAi

#5

How to Import This Workflow

  1. 1Click Download JSON button on the right to save the workflow file.
  2. 2Open your n8n instance. Go to Workflows → New → Import from file.
  3. 3Select the downloaded automate-invoice-analysis-via-telegram-with-chatgpt-4o-mini-extraction file and click Import.
  4. 4Set up credentials for each service node (API keys, OAuth, etc.).
  5. 5Click Test Workflow to verify everything works, then activate it.

Or paste directly in n8n → Import from JSON:

{ "name": "Automate invoice analysis via Telegram with ChatGPT-4o-mini extraction", "nodes": [...], ...}

Integrations

agentcodeextractfromfilehttprequestiflmchatopenaitelegramtelegramtrigger

Get This Workflow

Download and import in one click

Download JSONView on n8n.io
Nodes10
Complexitymedium
Triggertrigger
Views1
CategoryInvoice Processing

Created by

Cheng Siong Chin

Cheng Siong Chin

@cschin

Tags

agentcodeextractfromfilehttprequestiflmchatopenaitelegramtelegramtrigger
⚡

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Standard accounting templates often fail to reflect a premium brand identity. This sophisticated n8n workflow bridges the gap between financial record-keeping and professional client presentation. By moving beyond the native limitations of QuickBooks Online, this automation enables businesses to generate high-end, multi-page PDF invoices that align perfectly with their corporate styling. The process begins the moment a new invoice is generated in QuickBooks, triggering a webhook that captures real-time billing data. The workflow then utilizes advanced HTML-to-File conversion and custom Code nodes to structure data into a polished, branded layout. It handles complex logic such as line-item merging and multi-page formatting automatically. Once the document is rendered, the system bypasses generic 'no-reply' senders by routing the finalized PDF through your preferred email provider. This ensures a seamless, white-labeled experience for your clients while eliminating the manual overhead of exporting, styling, and attaching files. Ideal for agencies and service providers, this flow guarantees that your most frequent touchpoint—the bill—is as professional as your work. **Common Use Cases:** - High-end creative agencies requiring bespoke, white-labeled billing documents for premium clients. - Automated recurring subscription billing where custom tax disclosures or localized branding are required. - Service-based businesses needing to attach dynamic project reports or terms of service directly to QuickBooks invoices.

🔗 Webhook·12 nodes