---
id: initializing
title: "Initializing"
slug: initializing
custom_edit_url: https://github.com/supabase/supabase/edit/master/web/spec/supabase.yml
---
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You can initialize a new Supabase client using the `createClient()` method.
The Supabase client is your entrypoint to the rest of the Supabase functionality
and is the easiest way to interact with everything we offer within the Supabase ecosystem.
## Parameters
supabaseUrl
required
string
The unique Supabase URL which is supplied when you create a new project in your project dashboard.
supabaseKey
required
string
The unique Supabase Key which is supplied when you create a new project in your project dashboard.
options
optional
SupabaseClientOptions
No description provided.
## Examples
### createClient()
```js
import { createClient } from '@supabase/supabase-js'
// Create a single supabase client for interacting with your database
const supabase = createClient('https://xyzcompany.supabase.co', 'public-anon-key')
```
### With additional parameters
```js
import { createClient } from '@supabase/supabase-js'
const options = {
schema: 'public',
headers: { 'x-my-custom-header': 'my-app-name' },
autoRefreshToken: true,
persistSession: true,
detectSessionInUrl: true
}
const supabase = createClient("https://xyzcompany.supabase.co", "public-anon-key", options)
```
### API schemas
```js
import { createClient } from '@supabase/supabase-js'
// Provide a custom schema. Defaults to "public".
const supabase = createClient('https://xyzcompany.supabase.co', 'public-anon-key', {
schema: 'other_schema'
})
```
By default the API server points to the `public` schema. You can enable other database schemas within the Dashboard.
Go to `Settings > API > Schema` and add the schema which you want to expose to the API.
Note: each client connection can only access a single schema, so the code above can access the `other_schema` schema but cannot access the `public` schema.
### Custom `fetch` implementation
```js
import { createClient } from '@supabase/supabase-js'
const supabase = createClient('https://xyzcompany.supabase.co', 'public-anon-key', {
fetch: fetch.bind(globalThis)
})
```
`supabase-js` uses the [`cross-fetch`](https://www.npmjs.com/package/cross-fetch) library to make HTTP requests,
but an alternative `fetch` implementation can be provided as an option.
This is most useful in environments where `cross-fetch` is not compatible (for instance Cloudflare Workers).