Curated

(5/5)

Invoice data extraction with LlamaParse and OpenAI

2. Advanced PDF Processing with LlamaParse [Read more about using HTTP Requests](https://docs.n8n.io/integrations/builtin/core-nodes/n8n-nodes-base.httprequest/) LlamaIndex's LlamaCloud is a cloud-based service that allows you to upload, parse, and index document. LlamaParse is a tool offered by LlamaCloud to parse for complex PDFs with embedded objects ie PDF Tables and figures. At time of writing, you can parse 1000 pdfs/day with LlamaCloud's free plan by signing up at [https://cloud.llamainde

Integrations Used (6)

Lmopenai

Outputparserstructured

Workflow Structure (17 nodes)

100%

Gmail Trigger

Receiving Invoices

Split Out

Split Out Labels

Gmail

Get Labels Names

Merge

Email with Label Names

Should Process Email?

Http Request

Upload to LlamaParse

Http Request

Get Processing Status

Switch

Is Job Ready?

Http Request

Get Parsed Invoice Data

Langchain.lm Open Ai

OpenAI Model

Langchain.chain Llm

Apply Data Extraction Rules

Langchain.output Parser Structured

Structured Output Parser

Set

Map Output

Google Sheets

Append to Reconciliation Sheet

Gmail

Add "invoice synced" Label

Aggregate

Combine Label Names

Wait

Wait to stay within service limits

Node Types:

default

http

trigger

action

logic

transform

Requires credentials

Prerequisites

Required Credentials (4)

Gmail

Used by: Receiving Invoices, Add "invoice synced" Label +1 more

Docs

Google Sheets

Used by: Append to Reconciliation Sheet

Docs

HTTP Header Auth

Used by: Upload to LlamaParse, Get Processing Status +1 more

Docs

OpenAI

Used by: OpenAI Model

Docs

Multiple services required

This workflow needs 4 different credentials. Make sure you have accounts for all services before importing.

Complexity

Advanced

Expert level. Custom code, complex logic, many integrations.

Setup time: ~55 min

Score: 70/100

Conditional Logic

5 Integrations

When to Use This Workflow

Automated Reporting

Automatically collect and organize data into spreadsheets for analysis.

Spend less time on data entry and more time on insights.

Email Automation

Automate email responses, forwarding, or organization based on rules.

Handle routine email tasks automatically and focus on what matters.

Real-time Response

React instantly when events happen - new orders, form submissions, or API calls.

Zero delay between trigger and action for time-sensitive workflows.

workflow.json

{
  "meta": {
    "instanceId": "26ba763460b97c249b82942b23b6384876dfeb9327513332e743c5f6219c2b8e"
  },
  "nodes": [
    {
      "id": "7076854e-c7e8-45b5-9e5e-16678bffa254",
      "name": "OpenAI Model",
      "type": "@n8n/n8n-nodes-langchain.lmOpenAi",
      "position": [
        2420,
        480
      ],
      "parameters": {
        "model": {
          "__rl": true,
          "mode": "list",
          "value": "gpt-3.5-turbo-1106",
          "cachedResultName": "gpt-3.5-turbo-1106"
        },
...