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zitadel/apps/docs/content/sdk-examples/solidstart.mdx
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d8ea041c56 docs: introduce versioned docs and migrate to fuma (#11166)
## Todos for release

- [x] Configure Env in docs project on vercel
- [x] Configure Root Path in the docs project on vercel
- [ ] Remove old CSP https://github.com/zitadel/website/pull/1592

## What we did

This pull request migrates the project documentation from the old
`docs/` directory to the new `apps/docs/` directory, introduces a new
documentation system built with Next.js and Fumadocs, and updates all
relevant references, configuration files, and documentation to reflect
this change. It also adds new configuration and ignore files for the new
documentation app, updates CI and linting to exclude the new docs from
certain checks, and revises the contributing guidelines accordingly.

**Documentation System Migration and New Docs App**

* Migrated all documentation from `docs/` to `apps/docs/`, and updated
all references in `README.md`, `CONTRIBUTING.md`, and other files to
point to the new location.
[[1]](diffhunk://#diff-eca12c0a30e25b4b46522ebf89465a03ba72a03f540796c979137931d8f92055L585-L640)
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[[4]](diffhunk://#diff-b335630551682c19a781afebcf4d07bf978fb1f8ac04c6bf87428ed5106870f5L2-R3)
[[5]](diffhunk://#diff-b335630551682c19a781afebcf4d07bf978fb1f8ac04c6bf87428ed5106870f5L30-R30)
* Added a new Next.js/Fumadocs-based documentation app under
`apps/docs/`, including core app files, layouts, routing, search API,
and a comprehensive `README.md` with development and contribution
instructions.
[[1]](diffhunk://#diff-5a1b07344a2c1b4d3f37b23ff1388b62cd9f57dea3c1cd23d8a0412b7602b132R1-R74)
[[2]](diffhunk://#diff-462b9ad1eabbb7d1c29bb9c36e4931eb180fd7190900e6d2babf8f4d66ad1c28R1-R39)
[[3]](diffhunk://#diff-e16ae25660ded787b10ac35dea96d5ecaacf895dae0afc8a9bd4382dc79a8c87R1-R7)
[apps/docs/app/[[...slug]]/layout.tsxR1-R81](diffhunk://#diff-59e08acde4e805b7aeccef1dcf98f1d71dfc550777e6b9402085cee0e9fa4e0aR1-R81),
[apps/docs/app/[[...slug]]/page.tsxR1-R79](diffhunk://#diff-e5df3f80d0fa01e12d63d81f29c57a9d14e846c78fd3beabb2ef768e38fd9580R1-R79),
[[4]](diffhunk://#diff-389b34918e040cacaa87cd7201ffa462cc2b0b716736f537e3d3c660ac69353bR1-R7)
[[5]](diffhunk://#diff-d3b03416d1c457b19f1c27b26f2db741412df841b875c26ccadc36e4522247f4R1-R29)
[[6]](diffhunk://#diff-c8fb8339570a5305809be7c618e14705fd86390dc278e6ce8ba224a7bc8b0c3cR1-R25)

**Configuration and Tooling Updates**

* Updated `.github/workflows/codeql.yml`, `.golangci.yaml`, and
`.github/dependabot.yml` to properly handle the new docs app: excluded
`apps/docs` from certain checks, added npm dependency updates for the
docs app, and excluded generated content.
[[1]](diffhunk://#diff-12783128521e452af0cfac94b99b8d250413c516ec71fe6d97dbea666ff7ba27L8-R14)
[[2]](diffhunk://#diff-9917ddc9f1c3304218f7269265b746d997c5c0615478177b5fceecd33ef47cb5R5-R6)
[[3]](diffhunk://#diff-9917ddc9f1c3304218f7269265b746d997c5c0615478177b5fceecd33ef47cb5R126-R129)
[[4]](diffhunk://#diff-dd4fbda47e51f1e35defb9275a9cd9c212ecde0b870cba89ddaaae65c5f3cd28R89-R106)
* Updated `.devcontainer/devcontainer.json` to use the latest Go 1.25.3
version for consistency.

**Licensing and Miscellaneous**

* Added `apps/docs/` to the list of licensed directories in
`LICENSING.md`.

These changes ensure the documentation is now maintained in a modern,
scalable system and all project tooling is updated to support the new
structure.

---------

Co-authored-by: Federico Coppede <[email protected]>
2026-01-29 08:38:36 -08:00

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---
title: SolidStart
sidebar_label: SolidStart
framework_url: https://start.solidjs.com
auth_library: "@auth/core"
auth_library_url: https://www.npmjs.com/package/@auth/core
example_repo: https://github.com/zitadel/example-auth-solidstart
auth_flow: pkce
status: stable
---
## Overview
[SolidStart](https://start.solidjs.com) is a full-stack web framework built on top of [SolidJS](https://solidjs.com) that enables you to create performant web applications with a modern development experience. This example demonstrates how to integrate **[Zitadel](https://zitadel.com/docs)** using the **[OAuth 2.0 PKCE flow](https://oauth.net/2/pkce/)** to authenticate users securely and maintain [sessions](https://authjs.dev/concepts/session-strategies) across the app.
#### Auth library
This example uses **[@auth/solid-start](https://www.npmjs.com/package/@auth/solid-start)**, the SolidStart adapter for [Auth.js](https://authjs.dev), which builds on **[@auth/core](https://www.npmjs.com/package/@auth/core)**. Auth.js implements the [OpenID Connect (OIDC)](https://zitadel.com/docs/apis/openidoauth/endpoints) flow, manages [PKCE](https://oauth.net/2/pkce/), performs [token exchange](https://zitadel.com/docs/apis/openidoauth/grant-types), and exposes helpers for [session state](https://authjs.dev/concepts/session-strategies). The example also uses **[openid-client](https://www.npmjs.com/package/openid-client)** ([GitHub](https://github.com/panva/node-openid-client)) for manual token refresh operations and logout URL construction.
---
## What this example demonstrates
This example shows a complete authentication implementation using [SolidStart](https://start.solidjs.com) with [Zitadel](https://zitadel.com/docs). Users start on a public landing page and click a login button to authenticate with Zitadel using the secure **[PKCE flow](https://oauth.net/2/pkce/)**. The [Auth.js](https://authjs.dev) library handles the [OAuth 2.0](https://zitadel.com/docs/guides/integrate/login/oidc/oauth-recommended-flows) authorization code exchange and manages secure [session storage](https://authjs.dev/concepts/session-strategies) using encrypted [JWT tokens](https://zitadel.com/docs/apis/openidoauth/endpoints#token-endpoint). After successful authentication, users are redirected to a protected profile page displaying their user information including [OIDC claims](https://zitadel.com/docs/apis/openidoauth/claims) like name, email, and custom [Zitadel metadata](https://zitadel.com/docs/apis/openidoauth/claims#reserved-claims).
The application implements automatic [token refresh](https://zitadel.com/docs/apis/openidoauth/grant-types#refresh-token) to maintain long-lived sessions without requiring users to re-authenticate. When an [access token](https://zitadel.com/docs/apis/openidoauth/endpoints#token-endpoint) expires, the refresh logic seamlessly exchanges the [refresh token](https://zitadel.com/docs/apis/openidoauth/grant-types#refresh-token) for new tokens in the background. [Route protection](https://start.solidjs.com/api/createAsync) is implemented using [SolidStart's server functions](https://start.solidjs.com/api/server$), ensuring only authenticated users can access sensitive areas. The logout flow implements [federated logout](https://zitadel.com/docs/guides/integrate/login/oidc/logout) with CSRF protection using state parameters, properly terminating both the local session and the Zitadel session before redirecting users back to the application.
---
## Getting started
### Prerequisites
Before running this example, you need to create and configure a PKCE application in the [Zitadel Console](https://zitadel.com/docs/guides/manage/console/overview). Follow the PKCE application setup guide to:
1. Create a new Web application in your [Zitadel project](https://zitadel.com/docs/guides/manage/console/projects)
2. Configure it to use the PKCE authentication method
3. Set up your redirect URIs (e.g., `http://localhost:3000/auth/callback` for development)
4. Configure post-logout redirect URIs (e.g., `http://localhost:3000/api/auth/logout/callback`)
5. Copy your **Client ID** for use in the next steps
> **Note:** Make sure to enable **Dev Mode** in the [Zitadel Console](https://zitadel.com/docs/guides/manage/console/overview) if you're using HTTP URLs during local development. For production, always use HTTPS URLs and disable Dev Mode.
### Run the example
Once you have your [Zitadel application](https://zitadel.com/docs/guides/manage/console/applications) configured:
1. Clone the [repository](https://github.com/zitadel/example-auth-solidstart).
2. Create a `.env` file and configure it with the values from your [Zitadel application](https://zitadel.com/docs/guides/manage/console/applications). Use the exact environment variable names from the repository:
```
NODE_ENV=development
PORT=3000
SESSION_SECRET="your-very-secret-and-strong-session-key"
SESSION_DURATION=3600
ZITADEL_DOMAIN="https://your-zitadel-domain"
ZITADEL_CLIENT_ID="your-client-id"
ZITADEL_CLIENT_SECRET="your-randomly-generated-client-secret"
ZITADEL_CALLBACK_URL="http://localhost:3000/auth/callback"
ZITADEL_POST_LOGIN_URL="/profile"
ZITADEL_POST_LOGOUT_URL="http://localhost:3000/api/auth/logout/callback"
NEXTAUTH_URL="http://localhost:3000"
```
Replace these values with:
- Your actual [Zitadel instance URL](https://zitadel.com/docs/guides/manage/console/default-settings) (the **Issuer**)
- The **Client ID** you copied when creating the application
- The **redirect URIs** you configured in the PKCE setup (must match exactly)
- A secure random string for `SESSION_SECRET` (generate using: `node -e "console.log(require('crypto').randomBytes(32).toString('hex'))"`)
- A secure random string for `ZITADEL_CLIENT_SECRET` for [Auth.js](https://authjs.dev) configuration compatibility
3. Install dependencies using [npm](https://www.npmjs.com) and start the development server to verify the authentication flow end-to-end:
```bash
npm install
npm run dev
```
---
## Learn more and resources
* [PKCE concept](https://oauth.net/2/pkce/)
* [Federated logout](https://zitadel.com/docs/guides/integrate/login/oidc/logout)
* [OIDC integration guide](https://zitadel.com/docs/guides/integrate/login/oidc/login-users)
* [SolidStart documentation](https://start.solidjs.com)
* [Auth.js documentation](https://authjs.dev)
* [@auth/solid-start](https://www.npmjs.com/package/@auth/solid-start)
* [@auth/core](https://www.npmjs.com/package/@auth/core)
* [openid-client](https://www.npmjs.com/package/openid-client)
* [Example repository](https://github.com/zitadel/example-auth-solidstart)