---
title: "Mastodon"
description: "Integrating Mastodon with the Authelia OpenID Connect 1.0 Provider."
summary: ""
date: 2022-06-15T17:51:47+10:00
draft: false
images: []
weight: 620
toc: true
support:
  level: community
  versions: true
  integration: true
seo:
  title: "" # custom title (optional)
  description: "" # custom description (recommended)
  canonical: "" # custom canonical URL (optional)
  noindex: false # false (default) or true
---

## Tested Versions

* [Authelia]
  * [v4.38.0](https://github.com/authelia/authelia/releases/tag/v4.38.0)
* [Mastodon]
  * [v4.2.8](https://github.com/mastodon/mastodon/releases/tag/v4.2.8)

{{% oidc-common %}}

### Assumptions

This example makes the following assumptions:

* __Application Root URL:__ `https://mastodon.{{< sitevar name="domain" nojs="example.com" >}}/`
* __Authelia Root URL:__ `https://{{< sitevar name="subdomain-authelia" nojs="auth" >}}.{{< sitevar name="domain" nojs="example.com" >}}/`
* __Client ID:__ `mastodon`
* __Client Secret:__ `insecure_secret`

Some of the values presented in this guide can automatically be replaced with documentation variables.

{{< sitevar-preferences >}}

## Configuration

### Authelia

The following YAML configuration is an example __Authelia__ [client configuration] for use with [Mastodon] which will
operate with the application example:

```yaml {title="configuration.yml"}
identity_providers:
  oidc:
    ## The other portions of the mandatory OpenID Connect 1.0 configuration go here.
    ## See: https://www.authelia.com/c/oidc
    clients:
      - client_id: 'mastodon'
        client_name: 'Mastodon'
        client_secret: '$pbkdf2-sha512$310000$c8p78n7pUMln0jzvd4aK4Q$JNRBzwAo0ek5qKn50cFzzvE9RXV88h1wJn5KGiHrD0YKtZaR/nCb2CJPOsKaPK0hjf.9yHxzQGZziziccp6Yng'  # The digest of 'insecure_secret'.
        public: false
        authorization_policy: 'two_factor'
        redirect_uris:
          - 'https://mastodon.{{< sitevar name="domain" nojs="example.com" >}}/auth/auth/openid_connect/callback'
        scopes:
          - 'openid'
          - 'profile'
          - 'email'
        userinfo_signed_response_alg: 'none'
```

### Application

To configure [Mastodon] to utilize Authelia as an [OpenID Connect 1.0] Provider:

1. Add the following configuration variables:

```env
OIDC_ENABLED=true
OIDC_DISPLAY_NAME=Authelia
OIDC_DISCOVERY=true
OIDC_ISSUER=https://{{< sitevar name="subdomain-authelia" nojs="auth" >}}.{{< sitevar name="domain" nojs="example.com" >}}
OIDC_SCOPE=openid,profile,email
OIDC_UID_FIELD=preferred_username
OIDC_CLIENT_ID=mastodon
OIDC_CLIENT_SECRET=insecure_secret
OIDC_REDIRECT_URI=https://mastodon.{{< sitevar name="domain" nojs="example.com" >}}/auth/auth/openid_connect/callback
OIDC_SECURITY_ASSUME_EMAIL_IS_VERIFIED=true
```

## See Also

- [OmniAuth OpenID Connect 1.0 Docs](https://github.com/omniauth/omniauth_openid_connect)

[Mastodon]: https://joinmastodon.org/
[Authelia]: https://www.authelia.com
[OpenID Connect 1.0]: ../../openid-connect/introduction.md
[client configuration]: ../../../configuration/identity-providers/openid-connect/clients.md