Files
supabase/apps/ui-library/content/docs/tanstack/social-auth.mdx
Ivan Vasilov 69ce915a9e chore: Rename SUPABASE_PUBLISHABLE_OR_ANON_KEY to SUPABASE_PUBLISHABLE_KEY for all blocks (#42652)
This PR renames all `SUPABASE_PUBLISHABLE_OR_ANON_KEY` env vars into
`SUPABASE_PUBLISHABLE_KEY` to make the new API keys default. This is in
coordination with the rest of the docs.

I've also cleaned up the `blocks/vue` package from unused files.

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **Breaking Changes**
* Public environment variable names renamed from PUBLISHABLE_OR_ANON_KEY
→ PUBLISHABLE_KEY across all framework integrations; update your
environment configs.

* **Documentation**
* All framework guides, .env examples and registry docs updated to use
the new variable names.

* **Chores**
* Cleaned up UI registry/templates: some example Vue registry items and
autogenerated registry artifacts were removed or simplified.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
2026-02-11 10:23:16 +01:00

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---
title: Social Authentication
description: Social authentication block for Tanstack Start
---
<BlockPreview name="social-auth/auth/login" />
<Callout className="mt-4">
The block is using GitHub provider by default, but can be easily switched by changing a single
parameter.
</Callout>
## Installation
<BlockItem name="social-auth-nextjs" description="All needed components for the social auth flow" />
## Folder structure
This block includes the [Supabase client](/ui/docs/tanstack/client). If you already have one installed, you can skip overwriting it.
<RegistryBlock itemName="social-auth-tanstack" />
## Usage
Once you install the block in your Tanstack Start project, you'll get all the necessary pages and components to set up a social authentication flow.
### Getting started
After installing the block, you'll have the following environment variables in your `.env.local` file:
```env
VITE_SUPABASE_URL=
VITE_SUPABASE_PUBLISHABLE_KEY=
```
- If you're using supabase.com, you can find these values in the [Connect modal](https://supabase.com/dashboard/project/_?showConnect=true&connectTab=frameworks&framework=react&using=vite&with=supabasejs) under App Frameworks or in your project's [API settings](https://supabase.com/dashboard/project/_/settings/api).
- If you're using a local instance of Supabase, you can find these values by running `supabase start` or `supabase status` (if you already have it running).
### Setting up third party providers
We support a wide variety of social providers that you can use to integrate with your application. The full list is available [here](https://supabase.com/docs/guides/auth/social-login).
This block uses the PKCE flow with GitHub as the provider. To switch providers, just update the `provider` field in the `supabase.auth.signInWithOAuth` call. Enable the provider you want to use under [Auth Providers](https://supabase.com/dashboard/project/_/auth/providers) in the Supabase Dashboard and add the necessary credentials.
### Setting up routes and redirect URLs
1. Set the site URL in the [URL Configuration](https://supabase.com/dashboard/project/_/auth/url-configuration) settings in the Supabase Dashboard.
1. Update the redirect paths in `login-form.tsx` to point to your apps logged-in routes. Our examples use `/protected`, but you can set this to whatever fits your app.
1. Visit `http://your-site-url/login` to see this component in action.
### Combining social auth with password-based auth
If you want to combine this block with the password-based auth, you need to:
- Copy the `handleSocialLogin` function into the password-based `login-form.tsx` component and bind it to a "Login with ..." button.
- Copy the `@/routes/auth/oauth.ts` in your app under the same route.
## Further reading
- [Social login](https://supabase.com/docs/guides/auth/social-login)
- [Authentication error codes](https://supabase.com/docs/guides/auth/debugging/error-codes)