Reference > SDK > Overview

Webiny SDK Reference

API reference for the Webiny SDK — a type-safe JavaScript/TypeScript client for interacting with Webiny.

WHAT YOU'LL LEARN

How to initialize the Webiny SDK?
What configuration options are available?
What sub-SDKs are available and what they do?

Overview

The Webiny SDK is a type-safe JavaScript/TypeScript client for interacting with a Webiny instance from external applications — Node.js scripts, Next.js, Vue, SvelteKit, and others.

Install it from npm:

Initialization

Create a Webiny instance with your endpoint and API token:

Configuration

Option	Type	Required	Description
`endpoint`	`string`	Yes	The URL of your Webiny API endpoint
`token`	`string`	No	API token for authentication
`tenant`	`string`	No	Tenant ID. Defaults to `"root"`
`headers`	`Record<string, string>`	No	Additional HTTP headers sent with every request
`fetch`	`typeof fetch`	No	Custom fetch implementation. Defaults to the global `fetch`

Sub-SDKs

Property	Class	Description
`sdk.cms`	`CmsSdk`	Query and mutate Headless CMS entries
`sdk.fileManager`	`FileManagerSdk`	Upload and manage files
`sdk.tenantManager`	`TenantManagerSdk`	Create and manage tenants

Error Handling

All SDK methods return a Result<TValue, TError> type. Use result.isOk() and result.isFail() to branch on success or failure:

Error Types

Error class	`code`	When thrown
`HttpError`	`HTTP_ERROR`	The API responded with a non-2xx HTTP status
`GraphQLError`	`GRAPHQL_ERROR`	The API returned a GraphQL-level error
`NetworkError`	`NETWORK_ERROR`	The `fetch` call itself threw (e.g. no connectivity)