Weclapp is a cloud ERP platform used by SMEs in Germany and the German-speaking market. It covers CRM, accounting, inventory, projects and e-commerce connections.
Integrate weclapp alongside dozens of other accounting and ERP systems through Maesn Unified API.
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Weclapp does not provide a dedicated sandbox for developer. Maesn provides a sandbox immediately so you can start building and testing from day one.
Every weclapp customer has a unique subdomain URL and a manually extracted instance ID required on every request. Maesn collects both during onboarding and manages them per tenant automatically.
Maesn supports you gaining visibility and distribution in the weclapp ecosystem and going through the formal partner program.
Paywise is a debt collection vendor, that helps businesses recover unpaid invoices - automating everything from payment reminders to legal enforcement.
"Since integrating with Maesn, we've dramatically increased our platform adoption - supporting a wide range of accounting systems in one go. Our customers can connect their existing tools instantly, which drives engagement and makes Maesn a key part of our success strategy."
Felix Pieper
Chief Information Officer @ Paywise
Unified. Certified. Production-ready.
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Weclapp requires a customer-specific tenant ID stored and injected into every API request URL. Maesn stores this automatically after authentication and ensures every call is correctly routed, with no extra workflows on your end.
Tenant ID stored after authentication
Injected into every request automatically
No weclapp-specific URL handling required
Weclapp uses API token authentication. Maesn supports two flows: a branded popup via Maesn Connect in your own CI, or a simple API key input field in your own integration configuration using Maesn's headless authentication flow.
Branded auth popup via Maesn Connect in your CI
Simple API key input via headless authentication flow
No weclapp-specific auth logic on your end
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Weclapp v2 consolidates customers, suppliers, contacts, and leads under a single party endpoint. Maesn maps this into the Common Data Model and exposes each object type through its own unified endpoint, consistent with every other system in your stack.
Customers, suppliers, contacts and leads unified
Mapped into Maesn Common Data Model
Same endpoint structure as every other system
Weclapp distributes your plugin directly through the weclapp Store, giving you fast access to a large base of potential customers. Becoming a technology partner requires a monthly partner fee and basic certification through weclapp's partner training program. Maesn supports you through the full onboarding process.
Weclapp handles plugin distribution in the Store
Monthly partner fee and basic certification required
Maesn supports technical integration and onboarding
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The Maesn docs cover every weclapp endpoint, authentication flow, and implementation detail — plus a full overview of the current coverage, which is continuously being expanded.
Full weclapp endpoint & authentication documentation
Current coverage overview at a glance
Continuously expanding endpoints & integrations
Get your product and brand name listed at weclapp,
and benefit from a huge audience and strong co-marketing activities.
Get insights and learn about the most imoportant systems in our country-by-country view of the European ERP and Accounting software landscape.
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weclapp consolidates customers, suppliers, contacts, and leads under a single party endpoint. Maesn maps each type into the Common Data Model.
weclapp requires a customer-specific tenant ID injected into every API request URL. Maesn stores and injects it automatically after authentication.
Once weclapp is live, every other system Maesn supports is immediately accessible.
We are European.
Built and hosted in Germany to meet the highest security and compliance standards, Maesn processes API calls in real time without storing customer data and is fully ISO 27001 & GDPR compliant.
Everything you need to know about weclapp
You have more questions? We are looking forward hearing from you - book a meeting now!
Weclapp is a cloud-based ERP and CRM platform widely used by SMBs in the DACH region, offering integrated tools for accounting, order management, warehouse and customer management.
Integrating via Maesn eliminates all weclapp-specific complexity. Tenant ID handling, party model normalization and all weclapp-specific implementation details are handled automatically behind one unified API. Plus, you immediately gain access to dozens of other accounting and ERP systems.
Weclapp v2 consolidates customers, suppliers, contacts, and leads under a single party endpoint. Maesn maps each type into the Common Data Model automatically, exposing clean, separate objects consistent with every other system in your stack.
Weclapp requires a customer-specific tenant ID injected into every API request URL. Maesn stores and injects it automatically after authentication, so every call is correctly routed without any extra logic on your end.
Weclapp uses API token authentication. Maesn supports two flows: a branded popup via Maesn Connect in your own CI or a simple API key input field in your own integration configuration using Maesn's headless authentication flow.
Yes. weclapp supports native webhooks for customers, suppliers, invoices, credit notes, and sales orders. Maesn creates user-based subscriptions per customer with normalized payloads, consistent with every other system in your stack.
Maesn supports invoices, bills, credit notes, customers, suppliers, contacts, payments, journal entries, purchase orders, sales orders, and more. Coverage is continuously expanding and endpoints can be added on demand.
Yes. weclapp distributes plugins directly through the weclapp Store. Becoming a technology partner requires a monthly partner fee and basic certification through weclapp's partner training program. Maesn supports you through the full technical integration and onboarding process.
Maesn uses HTTPS and TLS for all data transfer and does not store any customer data. The platform is hosted on Microsoft Azure in Frankfurt, Germany and is fully GDPR & ISO 27001 compliant.
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