Extract invoice data from PDF with Claude AI and create vendor bill in Odoo 18

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1. Workflow Overview

This workflow automates accounts payable : upload a PDF invoice, let Claude AI extract the key fields, and automatically create a vendor bill (incoming invoice) in Odoo 18. Who is this for? Small a...

Best for

Invoice Processing automation workflows
AI Summarization automation workflows
advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.stickynote, n8n-nodes-base.webhook, n8n-nodes-base.extractfromfile, n8n-nodes-base.set, n8n-nodes-base.code, n8n-nodes-base.httprequest, n8n-nodes-base.if, n8n-nodes-base.respondtowebhook

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by Florian Eiche.

Original n8n.io source

1.1 Workflow description

Title: Extract invoice data from PDF with Claude AI and create vendor bill in Odoo 18
Workflow name: Extract invoice data from PDF with Claude AI and create vendor bill in Odoo 18

This workflow automates accounts payable: upload a PDF invoice, let Claude AI extract the key fields, and automatically create a vendor bill (incoming invoice) in Odoo 18.

Who is this for?

Small and medium businesses using Odoo 18 who want to automate invoice data entry. Finance teams, bookkeepers, or anyone processing incoming invoices manually.

How it works

Receive a PDF invoice via webhook (file upload)
Convert the PDF to base64 for AI processing
Claude AI extracts: vendor name, invoice number, date, amounts, tax rate
Authenticate with Odoo 18 via JSON-RPC API
Check for duplicate invoices (by invoice number)
Find or create the vendor (res.partner) in Odoo
Create a draft vendor bill (account.move) in Odoo
Return a structured JSON response with the result

The invoice is created in draft status so you can review and confirm it manually in Odoo before posting.

Extracted fields

vendor, invoice_number, invoice_date, total_amount, currency, net_amount, tax_rate, tax_amount

Setup

Open the Configuration node and enter your Odoo URL, database, user, and password
Create an HTTP Header Auth credential named Anthropic API Key with header name x-api-key and your Anthropic API key as value
Activate the workflow and send a test PDF

Test with curl

curl -X POST https://your-n8n-instance.com/webhook/invoice-process -F "[email protected]"

Requirements

Odoo 18 with Invoicing module installed
Anthropic API key (Claude Sonnet 4.5 recommended)
n8n 2.x (self-hosted or cloud)

How to customize

Change the AI model in the Configuration node (e.g. claude-haiku-4-5-20251001 for lower cost)
Modify the extraction prompt in Prepare Claude Request to add custom fields
Add a file storage step after invoice creation (e.g. Google Drive, S3, WebDAV)
Connect an email trigger instead of the webhook for fully automated processing

Note on data privacy

This workflow sends PDF documents to the Anthropic API for data extraction. Ensure you have a Data Processing Agreement (DPA) with Anthropic and comply with your local data protection regulations (e.g. GDPR) before processing documents containing personal data.

Author: Florian Eiche — eiche-digital.de

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - Sticky Note

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 2 - Sticky Note1

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 3 - Sticky Note2

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 4 - Sticky Note3

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 5 - Sticky Note4

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 6 - Receive Invoice PDF

Type / Role: n8n-nodes-base.webhook - webhook
Config choices: Version 2

Block 7 - PDF to Base64

Type / Role: n8n-nodes-base.extractFromFile - extractFromFile
Config choices: Version 1

Block 8 - Configuration

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 9 - Prepare Claude Request

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 10 - Claude AI Extract

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 11 - Parse Extraction

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 12 - Odoo Authenticate

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 13 - Prepare Duplicate Check

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 14 - Search Duplicate Invoice

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 15 - Duplicate Found?

Type / Role: n8n-nodes-base.if - if
Config choices: Version 2

Block 16 - Handle Duplicate

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 17 - Prepare Vendor Search

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 18 - Search Vendor

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 19 - Vendor Exists?

Type / Role: n8n-nodes-base.if - if
Config choices: Version 2

Block 20 - Use Existing Vendor

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 21 - Prepare Create Vendor

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 22 - Create Vendor in Odoo

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 23 - Get New Vendor ID

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 24 - Prepare Invoice

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Showing the first 24 of 29 workflow blocks. Download the JSON for the full node graph.

3. Summary Table

Workflow	Extract invoice data from PDF with Claude AI and create vendor bill in Odoo 18
Complexity	advanced
Nodes	29
Categories	Invoice Processing, AI Summarization
Author	Florian Eiche
Published	01 Apr 2026

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/14573/14573.json as the source template for this automation.
2. Import the template into n8n

Open n8n, import the downloaded JSON, and review each node before activating the workflow.
3. Configure credentials and variables

Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.
4. Test with sample data

Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.
5. Activate and monitor

Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Download workflow JSON Original n8n.io source Invoice Processing workflows AI Summarization workflows

Frequently asked questions

What does Extract invoice data from PDF with Claude AI and create vendor bill in Odoo 18 do?

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your Invoice Processing, AI Summarization use case.

Florian Eiche

4 workflows

Nodes

n8n-nodes-base.stickynote n8n-nodes-base.webhook n8n-nodes-base.extractfromfile n8n-nodes-base.set n8n-nodes-base.code n8n-nodes-base.httprequest n8n-nodes-base.if n8n-nodes-base.respondtowebhook

Complexity

advanced

Published 01 Apr 2026

Likes 0

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Install path: /data/workflows/14573/14573.json

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Extract invoice data from PDF with Claude AI and create vendor bill in Odoo 18

Workflow preview

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

Who is this for?

How it works

Extracted fields

Setup

Test with curl

Requirements

How to customize

Note on data privacy

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Sticky Note

Block 2 - Sticky Note1

Block 3 - Sticky Note2

Block 4 - Sticky Note3

Block 5 - Sticky Note4

Block 6 - Receive Invoice PDF

Block 7 - PDF to Base64

Block 8 - Configuration

Block 9 - Prepare Claude Request

Block 10 - Claude AI Extract

Block 11 - Parse Extraction

Block 12 - Odoo Authenticate

Block 13 - Prepare Duplicate Check

Block 14 - Search Duplicate Invoice

Block 15 - Duplicate Found?

Block 16 - Handle Duplicate

Block 17 - Prepare Vendor Search

Block 18 - Search Vendor

Block 19 - Vendor Exists?

Block 20 - Use Existing Vendor

Block 21 - Prepare Create Vendor

Block 22 - Create Vendor in Odoo

Block 23 - Get New Vendor ID

Block 24 - Prepare Invoice

3. Summary Table

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

2. Import the template into n8n

3. Configure credentials and variables

4. Test with sample data

5. Activate and monitor

5. General Notes & Resources

Frequently asked questions