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:

  1. Navigate to Settings > My Store

  2. Click Add New Sales Channel

  3. Select Castorama Marketplace from the list of available integrations

  4. Click Install

  5. 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. https://api.castorama.fr)

API Key

Paste the API Key issued through your Castorama seller onboarding process

  1. 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