Castorama Integration Guide
Integrate your Castorama sales channel with Helm to automate order syncing, maintain accurate inventory, and streamline fulfilment across one of Europe’s leading home improvement and DIY retailers
What is Castorama Marketplace
Castorama is a prominent home improvement and DIY retailer in France and parts of Europe. Its marketplace allows approved third-party sellers to offer tools, building materials, décor, and gardening products to a wide customer audience
Connecting Castorama to Helm enables centralised order management, real-time stock updates, and efficient fulfilment across your existing sales channels
PROS ✅ | CONS ❌ |
Access to Castorama’s large European customer base for home and DIY items | Requires a valid API URL and API Key issued by Castorama Marketplace |
Real-time syncing of orders and inventory via Helm | Product data may require Castorama-specific categorisation and regulatory compliance |
Seamless integration with multi-warehouse fulfilment | Onboarding may involve seller vetting processes and packaging approvals |
Step-by-Step Setup
From your Helm dashboard:
Navigate to Settings > My Store
Click Add New Sales Channel
Select Castorama Marketplace from the list of available integrations
Click Install
Enter the required details:
FIELD | DESCRIPTION |
Sales Channel Name | e.g. Castorama France |
Sales Channel Logo | Upload the Castorama logo or your own brand imagery |
API URL | Use the full endpoint provided by Castorama (e.g. |
API Key | Paste the API Key issued through your Castorama seller onboarding process |
Click Continue
Interaction Settings
Configure how Helm interacts with Castorama Marketplace:
INTERACTION SETTINGS | DESCRIPTION |
Sync Inventory | Automatically import your product catalogue from Castorama |
Sync Stock Levels | Synchronise stock quantities in real time |
Use Channel Names | Display Castorama product names in Helm order summaries |
Max Stock Levels | Cap the inventory levels sent to Castorama |
Stock Buffer | Reserve stock units to prevent overselling |
Auto Merge Orders | Merge orders from the same customer or delivery address |
Order Importing Type | Set the date/time to begin importing new orders |
Final Steps
Click Save once all settings are configured
Set the channel to Is Active at the top of the screen
Your Castorama Marketplace integration is now live - and you’re ready to Take the Helm
Common Issues
ISSUE | SOLUTION |
Invalid API URL | Ensure the URL includes HTTPS, correct domain, and version path |
Invalid API Key | Confirm the API Key is active and correctly copied without extra spaces |
Orders Not Importing | Verify the channel is active and appropriate order statuses are configured |
Stock Not Syncing | Check that stock sync is enabled and SKUs are properly mapped in Helm |
If you experience issues and need assistance, contact Helm Support
