FreshBooks is a cloud accounting platform widely used by freelancers, self-employed professionals and small service businesses across North America and the UK. The platform supports invoicing, expense tracking, time tracking and financial reporting.
Integrate FreshBooks alongside dozens of other accounting and ERP systems through Maesn Unified API.
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Dual identity model, rotating refresh tokens, include parameters and silent pagination caps. Maesn handles all FreshBooks-complexity for you.
Use FreshBooks webhooks as user-based subscriptions per customer with normalized payloads consistent with every other system.
Once FreshBooks is live, every other system Maesn supports is immediately accessible. No additional implementation needed.
Clockin helps small and mid-sized businesses digitize time tracking. From work hours to project times. User log everything via app or terminal, even offline, eliminating paper-based processes entirely.
"We use Maesn to successfully leverage integrations and partnerships as a key driver for lead generation and expansion into new markets and customer segments. By connecting Clockin to our customers' accounting systems, project data flows directly into their existing tools, ensuring a smooth, reliable data exchange with the systems they already use."
Fabian Ebbert
CSO @ Clockin
Unified. Certified. Production-ready.
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FreshBooks refresh tokens are invalidated on every single use. A single storage failure breaks the entire integration for that tenant with no recovery path other than full re-authorization. Maesn handles the full token rotation lifecycle per tenant in the backend so your integration never fails silently.
Refresh tokens rotated and stored reliably per tenant
Token loss detection and re-authorization surfaced clearly
No token management logic on your end
FreshBooks requires two different identifiers depending on which resource you access: accountId for accounting endpoints and businessId for time tracking and projects. Mixing them up causes silent failures or incorrect routing. Maesn resolves both identifiers during onboarding and injects the correct one into every request automatically.
accountId and businessId resolved during onboarding
Correct identifier injected per endpoint automatically
No silent routing failures on your end
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FreshBooks silently caps responses at 100 results per page and requires explicit include parameters for related data like invoice lines. Without proper handling your sync silently returns incomplete data. Maesn paginates all endpoints automatically and sends the correct includes on every request.
100-result cap handled with automatic pagination
include parameters sent automatically per endpoint
Complete and normalized data on every sync
The Maesn docs cover every Freshbooks endpoint, authentication flow, and implementation detail, plus a full overview of the current coverage, which is continuously being expanded.
Full freshbooks endpoint & authentication documentation
Standard Auth-flow for your users
No custom token storage or grant token management
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Get listed in the FreshBooks App Marketplace and benefit from 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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FreshBooks invalidates the refresh token on every use. Maesn stores and rotates it immediately per tenant so your integration never breaks without warning.
FreshBooks silently caps responses at 100 results and requires explicit include parameters for related data. Maesn paginates all endpoints automatically and sends the correct includes on every request.
Once Visma eAccounting 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 FreshBooks.
You have more questions? We are looking forward hearing from you - book a meeting now!
FreshBooks is a cloud-based accounting platform widely used by freelancers, self-employed professionals and small service businesses across North America, the UK and beyond, offering tools for invoicing, expense tracking, time tracking, project management and financial reporting.
Integrating via Maesn eliminates all FreshBooks-specific complexity. Dual identity resolution, rotating refresh token management, silent pagination caps and include parameter handling are all abstracted behind one unified API. Plus, you immediately gain access to dozens of other accounting and ERP systems.
FreshBooks requires two different identifiers depending on which resource you access. Accounting endpoints like invoices, clients and expenses use the accountId. Time tracking, projects and services use the businessId. These are different values and cannot be interchanged. Mixing them up causes silent failures or incorrect routing. Maesn resolves both during onboarding and injects the correct identifier into every request automatically.
FreshBooks refresh tokens are invalidated on every single use. When a new access token is issued, a brand new refresh token is issued alongside it and the old one is immediately invalidated. A single storage failure breaks the entire integration for that tenant with no recovery path other than full re-authorization. Maesn handles the full token rotation lifecycle per tenant in the backend so your integration never fails silently.
FreshBooks uses OAuth 2.0 with granular resource-level scopes that must be declared upfront. Missing a scope requires your customer to revoke access and reconnect. Maesn configures the correct scopes automatically as part of the app setup so your customers connect once and all required permissions are captured correctly.
FreshBooks silently caps responses at 100 results per page. Requesting more returns 100 without an error or warning. Without explicit pagination logic your sync silently returns incomplete data. Maesn paginates all FreshBooks collection endpoints automatically so you always receive the complete dataset.
Maesn supports invoices, bills, credit notes, customers, suppliers, payments, expenses, projects, time entries 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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