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Holded is a cloud ERP and accounting platform widely used by SMEs in Spain and across the broader Spanish-speaking market. Acquired by Visma in 2021, it covers invoicing, accounting, inventory, CRM, projects, and HR, making it one of the most comprehensive business management platforms for the Spanish SME market.
Integrate Holded alongside dozens of other accounting and ERP systems through Maesn Unified API.
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DocType routing, five separate module paths, Spanish IVA tax resolution and API key management are all handled by Maesn. You work with the same unified interface as every other system.
Holded uses static API keys. Maesn handles keycollection, storage, and management per tenant so you never touch rawcredentials yourself.
Holded does not offer a native sandbox environment. Maesn provides a test environment, so you can start building and testing your Holded integration immediately.
Hero Software helps craft businesses digitize and automate their entire back-office — from quotes to invoicing. Over 40,000 tradespeople use their cloud-based platform to eliminate manual admin and run operations more efficiently.
“The support provided is truly first class, with impressively quick response times. The documentation is thorough and easy to follow, which made integration a smooth process for me. I also appreciate the wide range of accounting integrations and endpoints available. It's clear that the endpoints are continuously being developed and expanded, which adds even more value to the platform.”
Ricardas Kauneckas
Full Stack Engineer @ HERO Software
Unified. Certified. Production-ready.
All Holded documents as invoices, credit notes, purchase orders and sales receipts, share a single endpoint controlled by a docType parameter. On top of that the API is split across five separate modules each with its own base path. Maesn maps document types to the correct docType and routes every request to the correct module path automatically.
docType routing mapped automatically per document type
Five module paths abstracted behind one unified interface
No module path management or docType logic on your end
Holded references taxes as company-specific objects rather than plain percentages. Maesn pulls all available tax objects per tenant so your customers can configure the mapping between their Holded tax IDs and your integration once. Enabling a smooth and precise document creation flow without any manual lookup on your end.
Company-specific tax objects pulled per tenant
Mapping flexibility for your customer
Correct tax ID applied on every document write
The Holded API is only available on paid plans and requires Owner or Administrator access to generate API keys. Without proper guidance this causes failed connection attempts during onboarding. Maesn's onboarding flow communicates these requirements clearly so your customers are never surprised during setup.
API only available on paid Holded plans
Owner or Administrator access required
Maesn guides through requirements at onboarding
Holded does not offer webhooks natively. Maesn can extend coverage with synthetic webhooks for any Holded object and event. Normalized and consistent with every other system in your stack. Available on demand.
Holded does not support native webhooks
Synthetic webhooks extendable on demand via Maesn
Normalized payloads consistent with every other system
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Holded offers an in-app store with direct visibility to its user base across Spain and the broader Spanish-speaking market. Getting listed requires fulfilling certain requirements set by Holded. Maesn supports you through the listing process and helps you reach the requirements fast.
Direct visibility in the Holded in-app store
Listing requirements supported by Maesn
Access to Holded's Spanish SME customer base
The Maesn docs cover every Holded endpoint, authentication flow and implementation detail, plus a full overview of the current coverage, which is continuously being expanded.
Full Holded endpoint & authentication documentation
Standard Auth-flow for your users
No custom token storage or grant token management
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Holded offers an extensive in-app Holded store, where an app can be listed when fulfilling certain requirements.
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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All Holded documents share a single endpoint and the API is split across five modules. Maesn maps every document type to the correct docType and routes to the correct module path automatically.
Holded references taxes as company-specific objects. Maesn pulls all available tax objects per tenant so your customers can configure the mapping.
Once Holded 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 Holded.
You have more questions? We are looking forward hearing from you - book a meeting now!
Holded is a cloud ERP and accounting platform widely used by SMEs in Spain and across the broader Spanish-speaking market. Acquired by Visma in 2021, Holded serves over 80,000 companies with an all-in-one platform covering invoicing, accounting, inventory, CRM, projects and HR.
Integrating via Maesn eliminates all Holded-specific complexity. docType routing, multi-module architecture, Spanish IVA tax resolution and API key management are all handled automatically behind one unified API. Plus, you immediately gain access to dozens of other accounting and ERP systems.
All Holded documents: invoices, credit notes, purchase orders and sales receipts, share a single endpoint controlled by a docType parameter. Using the wrong docType produces the wrong document type without an error. Maesn maps every document type to the correct docType automatically so you never manage docType routing directly.
The Holded API is split across five separate modules each with its own base path: Invoice API, Accounting API, CRM API, Projects API and Team API. Maesn unifies the required modules behind one interface and routes every request to the correct module path automatically.
Holded references taxes as company-specific objects rather than plain percentages. Maesn pulls all available tax objects per tenant so your customers can configure the mapping between tax rates and their Holded tax objects once — enabling a smooth and precise document creation flow.
The Holded API is only available on paid plans and requires Owner or Administrator access to generate API keys. Maesn's onboarding flow communicates these requirements clearly so your customers are never surprised during setup.
Holded does not offer webhooks natively. Maesn fills this gap with synthetic webhooks covering every object and every event in a normalized payload consistent with every other system in your stack.
Yes. Holded offers an in-app store with direct visibility to its user base across Spain and the broader Spanish-speaking market. Maesn supports you through the listing process and helps you fulfill the requirements fast.
Maesn supports invoices, bills, credit notes, customers, suppliers, contacts, payments, journal entries, expenses and more. Coverage is continuously expanding and endpoints can be added on demand.
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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