In This Article

Available Service Plugins

Wix has a fixed set of service plugins. The tables below group them by API. Each row links to that plugin's API reference introduction, which is the contract for its methods.

The columns show where you can add the plugin:

Studio Two sites add a plugin from the Code tab through the Wix Extension Builder. The cell says SDK for the plugin types the Builder offers.
Wix Studio and Wix Editor sites add a plugin with Velo. The cell says Velo for the plugins available there.
Apps and Wix-managed headless projects add a plugin with the SDK, with REST, or with both, as the cell says. App dashboard means the plugin is a configuration in the app dashboard and Wix doesn't call an endpoint. Self-managed headless projects have no documented way to add a service plugin.

N/A means that path doesn't offer the plugin.

eCommerce

Service plugin	What it does	Studio Two	Wix Studio and Wix Editor	Apps and Wix-managed headless
eCommerce Additional Fees	Add fees such as gift wrap or fragile packaging during cart and checkout.	SDK	Velo	SDK and REST
eCommerce Shipping Rates	Provide shipping rates during cart and checkout.	SDK	Velo	SDK and REST
eCommerce Discount Triggers	Apply custom discount rules to a cart and checkout.	SDK	Velo	SDK and REST
eCommerce Validations	Validate a cart and checkout.	SDK	Velo	SDK and REST
eCommerce Payment Settings	Decide whether to apply 3D Secure during payment.	SDK	Velo	SDK and REST
eCommerce Gift Cards	Integrate as a gift card provider.	SDK	N/A	SDK and REST
eCommerce Catalog	Connect an external catalog of sellable items to eCommerce. In Velo this plugin is in beta.	N/A	Velo	SDK and REST
eCommerce Recommendations	Provide recommendation algorithms for a site.	N/A	N/A	SDK and REST
eCommerce Inventory	Increment and decrement item availability from order flows.	N/A	N/A	SDK and REST
eCommerce Memberships	Let customers pay at checkout with memberships you issue.	N/A	N/A	SDK and REST
Tax Calculation	Calculate tax for a transaction. Velo calls this plugin Billing Tax Calculation.	N/A	Velo	SDK and REST
Tax Groups	Assign default tax groups to products from your catalog.	N/A	N/A	App dashboard

Stores

Service plugin	What it does	Studio Two	Wix Studio and Wix Editor	Apps and Wix-managed headless
Stores Product Restrictions	Restrict which product fields a fulfillment app can edit.	N/A	N/A	REST

Bookings

Service plugin	What it does	Studio Two	Wix Studio and Wix Editor	Apps and Wix-managed headless
Bookings Pricing	Calculate custom prices for bookings. Velo calls this plugin Bookings Custom Pricing.	SDK	Velo	SDK and REST
Bookings Validation	Validate creating, canceling, or rescheduling a booking.	SDK	N/A	SDK and REST
Booking Policy	Provide custom rules for when customers can book.	SDK	N/A	SDK and REST
Availability Time Slots	Customize how Wix calculates bookable time slots.	SDK	N/A	SDK and REST
Staff Sorting	Choose the order in which available staff are assigned to a booking.	SDK	N/A	SDK and REST

CMS

Service plugin	What it does	Studio Two	Wix Studio and Wix Editor	Apps and Wix-managed headless
External Database	Connect an external database to the Wix CMS.	N/A	Velo	SDK and REST

Suppliers Hub

Service plugin	What it does	Studio Two	Wix Studio and Wix Editor	Apps and Wix-managed headless
Suppliers Hub Marketplace Provider	Connect a supplier catalog to Wix Stores.	N/A	N/A	SDK and REST

CRM

Service plugin	What it does	Studio Two	Wix Studio and Wix Editor	Apps and Wix-managed headless
Form Submission	Add validation when a visitor submits a form.	N/A	Velo	SDK and REST

Automations

Service plugin	What it does	Studio Two	Wix Studio and Wix Editor	Apps and Wix-managed headless
Automations Action	Run a custom action from an automation.	N/A	Velo	SDK and REST
Automations Trigger	Validate an automation trigger and refresh its payload.	N/A	N/A	SDK and REST

Marketing

Service plugin	What it does	Studio Two	Wix Studio and Wix Editor	Apps and Wix-managed headless
Marketing Keyword Suggestions	Provide keyword suggestions in the site dashboard.	N/A	N/A	SDK and REST

Payments

Service plugin	What it does	Studio Two	Wix Studio and Wix Editor	Apps and Wix-managed headless
Payments Provider	Connect a payment provider Wix doesn't already support.	N/A	Velo	REST

App Management

Service plugin	What it does	Studio Two	Wix Studio and Wix Editor	Apps and Wix-managed headless
App Billing Custom Charges	Charge Wix users for using your app.	N/A	N/A	SDK and REST
Tools Provider	Expose tools that Wix AI agents can run.	SDK	N/A	SDK and REST

Realtime

Service plugin	What it does	Studio Two	Wix Studio and Wix Editor	Apps and Wix-managed headless
Realtime Permissions	Allow or deny a cross-app subscription to a realtime channel.	SDK	N/A	SDK and REST

The Wix Extension Builder uses shorter names than the rows in this table. Ecom Additional Fees in the Builder is the eCommerce Additional Fees row. Bookings Pricing Provider is the Bookings Pricing row.