AI Invoice Agent โ€” n8n Workflow

Medium complexityโšก Trigger11 nodes๐Ÿท๏ธ Invoice Processingby Rakin Jakaria

Overview

๐Ÿ“„ AI Invoice Agent

The AI Invoice Agent automates the invoice creation, email delivery, and status tracking process for client billing. It ensures invoices are generated, sent professionally, and updated in Google Sheets with minimal manual work.

๐Ÿ”น How It Works

Trigger

Activated manually (Execute Workflow) when you want to process invoices.

Fetch Invoices

Reads client invoice data from a Google Sheet (Client Invoices).

Filter Pending Invoices

Passes through only invoices with St

Nodes used

Google SheetsGmailAI AgentOpenAI Chat ModelInformation Extractor

Workflow Preview

โœ… Make sure CraftMyPDF node is installed in y
Start here: Step-by Step Youtube Tutorial :st
![AI Invoice Agent](https://youtu.be/r8Cg7hTMFdg)
modelmodel
โšก
W
When clicking โ€˜Execute wโ€ฆ
Google Sheets
F
Filter
E
Edit Fields
L
Loop Over Items
AI Agent
Information Extractor
C
CraftMyPDF
Gmail
Google Sheets1
GPT - 4.1 mini
11 nodes12 edges

How it Works

  1. 1

    Trigger

    The workflow starts with a trigger trigger.

  2. 2

    Process

    Data flows through 11 nodes, connecting agent, filter, gmail.

  3. 3

    Output

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

Node Details (11)

GO

Google Sheets

googleSheets

#1
GM

Gmail

gmail

#2
AI

AI Agent

n8n-nodes-langchain.agent

#3
OP

OpenAI Chat Model

n8n-nodes-langchain.lmChatOpenAi

#4
IN

Information Extractor

n8n-nodes-langchain.informationExtractor

#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 โ†’ New โ†’ Import from file.
  3. 3Select the downloaded ai-invoice-agent 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 โ†’ Import from JSON:

{ "name": "AI Invoice Agent", "nodes": [...], ...}

Integrations

agentfiltergmailgooglesheetsinformationextractorlmchatopenaimanualtriggern8n-nodes-craftmypdf.craftmypdfsetsplitinbatches

Get This Workflow

Download and import in one click

Download JSONView on n8n.io
Nodes11
Complexitymedium
Triggertrigger

Created by

Rakin Jakaria

Rakin Jakaria

@rakinjakaria

Tags

agentfiltergmailgooglesheetsinformationextractorlmchatopenaimanualtriggern8n-nodes-craftmypdf.craftmypdfsetsplitinbatches
โšก

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Automate Custom QuickBooks Invoice PDFs & Email with n8n

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 touchpointโ€”the billโ€”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.

๐Ÿ”— Webhookยท12 nodes