# SnelStart — Accounting API: overview > Canonical URL: https://developers.apideck.com/apis/accounting/snelstart/overview SnelStart is a Dutch cloud + desktop accounting suite for freelancers, SMBs, and accounting firms. The B2B API exposes administrations, sales/purchase invoices, journal entries, ledger accounts, contacts, articles, VAT rates, and documents. - Status: beta - Authentication: apiKey - **account type required:** SnelStart inZicht or inControle package — the lower inStap, inKaart, inBalans and inOrde packages expose no API access. - **apideck credentials available:** false - **apideck credentials note:** SnelStart issues keys per certified integration, so you bring your own. - **authentication note:** A consumer-supplied Connection Key plus an application-owner Subscription Key on every request. Not OAuth. - **beta:** true - **consumer access level:** No per-user access levels and no scope picker in the connect flow — the Connection Key grants the scopes this connector needs for one SnelStart administration. - **costs:** From EUR 54/month for an API-capable subscription, plus a one-time EUR 250 certification fee per permanent key. Both ex. VAT. - **difficulty:** involved - **difficulty reason:** Partnership Required (Certification) + Custom Auth (Connection Key + Subscription Key) - **environment notes:** - **description:** Testing and production share one API surface — SnelStart has no separate sandbox host. Build against a real SnelStart administration with the development key, then swap in the permanent key; no endpoint change is needed. Treat everything you write as production data. - **environment:** Single environment - **external guides:** - **source:** SnelStart - **title:** Certificering aanvragen (certification application) - **url:** https://www.snelstart.nl/api/certificeren - **source:** SnelStart - **title:** Koppelen via de Web API (connecting via the Web API) - **url:** https://kennisplein.snelstart.nl/klanten/s/article/koppelen-via-de-web-api - **important to know:** SnelStart's API reference is Dutch-only and sits behind a developer-portal login. Budget for translation if your team doesn't read Dutch. This connector is a maatwerkkoppeling — one custom coupling per named consumer, and the fastest route live. Serving many consumers needs a productiekoppeling, which requires OAuth and a registered webhook URL — a separate integration to build and certify, not a paperwork step. Restoring a SnelStart administration from a backup or restore point makes it a new administration: the old Connection Key stops working permanently and the consumer must generate and paste a brand-new one. Build a reconnect path rather than treating authorization as one-time. - **partnership note:** A permanent key is issued only after SnelStart certifies the finished integration. - **partnership portal name:** SnelStart B2B API Developer Portal - **partnership required:** true - **partnership url:** https://www.snelstart.nl/api - **rate limits:** Production/custom keys: 500/min, 5,000/hour, 50 concurrent per administration. Development keys: 100/min, 1,000/hour, 5 concurrent. No other rate limits. - **responsibility matrix:** - **area:** Apply for SnelStart B2B API Access - **customer:** ✓ - **apideck:** Docs provided - **area:** Obtain Subscription Key & Certification - **customer:** ✓ - **area:** Add Credentials to Apideck - **customer:** ✓ - **apideck:** Docs provided - **area:** Generate & Share Connection Key - **consumer:** ✓ - **apideck:** Maintains connector - **area:** Build via Unified API - **customer:** ✓ - **apideck:** Logs & alerts - **area:** Monitor Connections - **consumer:** ✓ Can revoke the key anytime - **customer:** ✓ Via dashboard - **sandbox available:** true - **sandbox note:** Free temporary development key via the Development & Test product in the developer portal, valid 90 days and capped on call volume. - **sandbox url:** https://b2bapi-developer.snelstart.nl - **supported resource categories:** - **name:** Core Financial - **resources:** ledger-accounts tax-rates journal-entries - **name:** Accounts Receivable - **resources:** customers invoices invoice-items payments - **name:** Accounts Payable - **resources:** suppliers bills bill-payments - **name:** Banking - **resources:** bank-accounts bank-feed-statements - **name:** Organizational - **resources:** companies company-info - **name:** Other - **resources:** attachments - **webhooks:** Virtual webhooks — invoices, bills, customers, suppliers and journal entries (created/updated). ## Supported resources [Accounting data model](/guides/accounting-data-model.md) - **custom field support:** true - **downstream id:** company-info - **downstream name:** Company Info - **id:** companies - **name:** Companies - **status:** beta - **custom field support:** true - **downstream id:** company-info - **downstream name:** Company Info - **id:** company-info - **name:** Company Info - **status:** live - **custom field support:** true - **downstream id:** grootboeken - **downstream name:** Grootboeken - **id:** ledger-accounts - **name:** Ledger Accounts - **status:** live - **custom field support:** false - **downstream id:** btw-tarieven - **downstream name:** Btw Tarieven - **id:** tax-rates - **name:** Tax Rates - **status:** live - **custom field support:** true - **downstream id:** relaties-customers - **downstream name:** Relaties Customers - **id:** customers - **name:** Customers - **status:** live - **custom field support:** true - **downstream id:** relaties-suppliers - **downstream name:** Relaties Suppliers - **id:** suppliers - **name:** Suppliers - **status:** live - **custom field support:** true - **downstream id:** artikelen - **downstream name:** Artikelen - **id:** invoice-items - **name:** Invoice Items - **status:** live - **custom field support:** true - **downstream id:** verkoopfacturen - **downstream name:** Verkoopfacturen - **id:** invoices - **name:** Invoices - **status:** live - **custom field support:** true - **downstream id:** inkoopfacturen - **downstream name:** Inkoopfacturen - **id:** bills - **name:** Bills - **status:** live - **custom field support:** true - **downstream id:** memoriaalboekingen - **downstream name:** Memoriaalboekingen - **id:** journal-entries - **name:** Journal Entries - **status:** live - **custom field support:** false - **downstream id:** fiscal-periods - **downstream name:** Fiscal Periods - **id:** fiscal-periods - **name:** Fiscal Periods - **status:** beta - **custom field support:** false - **downstream id:** trial-balance - **downstream name:** Trial Balance - **id:** trial-balance - **name:** Trial Balance - **status:** beta - **custom field support:** false - **downstream id:** documenten - **downstream name:** Documenten - **id:** attachments - **name:** Attachments - **status:** live - **custom field support:** false - **downstream id:** dagboeken - **downstream name:** Dagboeken - **id:** bank-accounts - **name:** Bank Accounts - **status:** beta - **custom field support:** false - **downstream id:** journals - **downstream name:** Journals - **id:** journals - **name:** Journals - **status:** beta - **custom field support:** false - **downstream id:** bankafschriftbestanden - **downstream name:** Bankafschriftbestanden - **id:** bank-feed-statements - **name:** Bank Feed Statements - **status:** beta - **custom field support:** false - **downstream id:** bankboekingen-payments - **downstream name:** Bankboekingen Payments - **id:** payments - **name:** Payments - **status:** live - **custom field support:** false - **downstream id:** bankboekingen-billpayments - **downstream name:** Bankboekingen Billpayments - **id:** bill-payments - **name:** Bill Payments - **status:** live An omitted operation list does not establish operation support. Verify the selected operation in the coverage matrix. [API reference](https://developers.apideck.com/apis/accounting/reference.md) · [Coverage matrix](https://developers.apideck.com/apis/accounting/coverage)