Wave Financial API Integration Guide (In-Depth)
Comprehensive guide to Wave Financials API integration. Learn secure OAuth 2.0 authentication, GraphQL architecture, and powerful use cases for automating small business accounting workflows.
Ship Wave Financial API integration via Knit's Unified Accounting API — live in days, not weeks.
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Retrieve a list of line item SKUs/products used in transactions
Retrieve company-level metadata like name, fiscal year, and address
Create a payment record against an invoice
Programmatically create a new journal entry with line items
Create a new invoice for a contact or account
Create a new contact in the accounting system
Create a new account under chart of accounts
Sync contact details like name, address, phone, email, and user mapping
Sync chart of accounts data
Update a payment record with status or reference changes
Update the line items or status of an invoice
Update existing contact details
Update details of an existing account
Sync purchase orders and associated line items
Sync payment data including payment entries and references
Sync journal entries and associated line items
Sync invoice-level data including entries, addresses, and payment references
Retrieve category/tag structure used to track expenses or invoices
Fetch all tax rates configured in the accounting system
Retrieve all agent or admin users
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A brilliant tool to let you seamlessly integrate with many different systems. It is very easy to integrate with and customer support is next level.
Seamless integration experience. Well-documented, self-explanatory APIs, and excellent service and support.
Easy to integrate. Knit's dashboard is intuitive for setting up and testing integrations, and the sandbox is extremely useful during development.
Knit shipped a brand-new Timesheet API in a week and handed us a ready-to-use NetSuite sandbox. That velocity is priceless when you're running payroll in 40+ countries.
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Yes — Wave Financial is a live, already-built connector on Knit's Unified Accounting API, not a roadmap item.
Yes. It supports both reads and writes, so you can build bi-directional sync use cases — not just pull data from Wave Financial, but push updates back to it.
Knit provides an embedded Auth component (white-labeling available on higher tiers) that handles Wave Financial's OAuth, credential storage, and refresh — your customers authorize once through Knit, and you never touch raw credentials.
Knit absorbs it. We maintain and update the Wave Financial connector on our end, so your integration keeps working without you tracking Wave Financial's changelog.
No. Knit acts as a stateless passthrough — data is processed on our application server and sent directly to your webhooks, without being stored on Knit's servers.
You choose the model that fits your business — pricing based on integrated accounts, or based on API call volume. Every plan includes a 30-day free trial before billing starts.
Comprehensive guide to Wave Financials API integration. Learn secure OAuth 2.0 authentication, GraphQL architecture, and powerful use cases for automating small business accounting workflows.
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