Connect your app to Wave

Connect your app to Wave, an accounting and invoicing platform, to build apps that work with customers, products, invoices, estimates, and business accounting data.

Wave is an accounting and invoicing platform for small businesses. The Wave connector lets your Lovable app read and manage business, customer, product, invoice, estimate, vendor, account, sales tax, and transaction data in your Wave account through Wave’s GraphQL API. It’s designed for small-business dashboards, invoice workflows, customer management tools, and finance operations apps tied to a Wave business.

Wave is available as an app + chat connector: one shared connection that works in the chat while you build and in your published apps.

With Wave, your app can:

• List your businesses and read accounting metadata
• Create and update customers, products, invoices, and estimates
• Query accounts, sales taxes, vendors, and transactions
• Build small-business finance workflows on top of Wave data

Wave is a good fit when you run your books in Wave and want an app that shows or updates that data without opening Wave.

Common use cases and example apps

These examples show what you can build with Wave, each with a prompt to start from.

Example app	Example prompt	Description
Small-business finance dashboard	Use Wave and build a dashboard that shows my businesses, customers, unpaid invoices, and recent transactions.	Track Wave business activity in one place. The app reads accounting metadata, invoices, customers, and transactions so a business owner can monitor work without opening Wave.
Invoice management app	Use Wave and build an app where I can list invoices, filter by customer, and create draft invoices for new work.	Manage invoice workflows from a custom interface. The app works with Wave invoice and customer data and stores internal workflow notes separately in your Lovable app.
Customer account portal	Use Wave and build a customer portal that shows invoice history and customer details for each account manager.	Give teams a focused view of customer billing data. The app reads Wave customers and invoices and organizes them around your internal account management workflow.
Product and service catalog	Use Wave and build a catalog manager that lists my products and services and lets me update descriptions and prices.	Keep Wave products and services easier to review. The app reads and updates product records so your team can maintain billing items from a tailored interface.
Estimate tracking tool	Use Wave and build an estimate tracker that lists estimates, groups them by status, and helps me follow up with customers.	Turn Wave estimates into a sales follow-up workflow. The app reads estimate and customer data and adds reminders, filters, and internal status tracking.
Vendor and expense overview	Use Wave and build an app that shows vendors, accounts, and recent transactions for my finance team.	Surface Wave accounting data for operations reviews. The app queries vendors, accounts, and transactions so finance teams can review activity in a purpose-built view.

How to connect Wave

Who can create Wave connections depends on your plan and workspace settings. App + chat connectors are available by default on Free, Pro, and Business plans. On Enterprise plans, they are effectively disabled at first: Who can create connections and clients defaults to No one until an admin changes it in Connectors → Admin settings → App + chat connectors.

You can create multiple Wave connections using different Wave accounts, which is useful for separating environments or client accounts.

When the connection is created, you can link it to the projects where you want to use it. Anyone building in a project can ask Lovable in chat to link their project to it.

Prerequisites

Before connecting Wave, make sure you have:

• A Wave account with access to the business your app needs
• Permission to create connections in your Lovable workspace (see Who can create connections and clients)

All API requests made through this connector count toward the limits of your Wave account. Billing and quota are handled directly by Wave, not Lovable.

Set up your Wave connection

You authorize Lovable with your Wave account. You do not need an API key or a Wave application of your own.

1. Open Wave in Connectors

   Open Connectors and select Wave. For the other places to open the catalog from, see Where to find connectors.

2. Add a connection

   Click Add connection.

3. Name the connection

   In Display name, name the connection (for example, Wave Main Business). This name is only used inside Lovable to identify the connection.

4. Review scopes (optional)

   Under Scopes, review the permissions the connection requests. User: read and Business: read are always included, and every other scope is selected by default.

   Scope	Description	Default
   User: read (user:read)	Read the authorized Wave user’s profile	Required
   Business: read (business:read)	List and read Wave businesses available to the user	Required
   Accounts: full access (account:*)	Read and manage accounting accounts	On
   Customers: full access (customer:*)	Create, read, and update customers	On
   Estimates: full access (estimate:*)	Create, read, update, and send estimates	On
   Invoices: full access (invoice:*)	Create, read, update, and send invoices	On
   Products: full access (product:*)	Create, read, and update products and services	On
   Sales taxes: full access (sales_tax:*)	Create, read, and update sales taxes	On
   Transactions: full access (transaction:*)	Write and manage money transactions	On
   Vendors: full access (vendor:*)	Create, read, and update vendors	On

   Select only the scopes your app needs. For full API documentation, see Wave’s API reference.

5. Choose who can use this connection

   Under Sharing, the connection is private to you by default and shows a Private label. To share it, click Share with others. Then add workspace members by email, or click Invite entire workspace to make the connection available to everyone in your Lovable workspace.

   See Who can use connections and clients for more information.

6. Connect to Wave and authorize

   Click Connect. The Wave authorization window opens, so make sure your browser doesn’t block pop-ups. If it does, Lovable redirects you instead.

   Sign in to Wave if prompted, review the requested permissions, and authorize the app.

   You’ll be redirected back to Lovable with a confirmation.

When connected, anyone building in a project can ask Lovable in chat to link their project to Wave (based on configured connection-level access). Your Lovable apps can then work with the Wave resources covered by the selected scopes.

Limitations

The Wave connector cannot:

• Receive Wave webhooks or event notifications.
• Support per-end-user Wave login. Each connection represents a single Wave account shared across all projects linked to it.

If Wave authorization is revoked from the Wave side, reconnect the connection in Lovable before API calls can succeed again.

Manage your Wave connection

Connections are managed from Connectors: select Wave, then open the connection.

• Unlink projects to remove Wave access from specific projects while keeping the connection available for others. See Unlink projects from a connection for the steps.
• Delete the connection to remove it from the workspace entirely. Deleting is permanent. It removes the credentials from all linked projects, and app features that use Wave stop working until a new connection is added. See Delete a connection for the steps and who can delete.