OAuth2 provider

Forgejo supports acting as an OAuth2 provider to allow third party applications to access its resources with the user’s consent.

Endpoints

Endpoint	URL
OpenID Connect Discovery	`/.well-known/openid-configuration`
Authorization Endpoint	`/login/oauth/authorize`
Access Token Endpoint	`/login/oauth/access_token`
OpenID Connect UserInfo	`/login/oauth/userinfo`
JSON Web Key Set	`/login/oauth/keys`

Supported OAuth2 Grants

At the moment Forgejo only supports the Authorization Code Grant standard with additional support of the following extensions:

To use the Authorization Code Grant as a third party application it is required to register a new application via the “Settings” (/user/settings/applications) section of the settings.

Scoped Tokens

Forgejo supports the following scopes for tokens:

Name	Description
(no scope)	Grants read-only access to public user profile and public repositories.
repo	Full control over all repositories.
repo:status	Grants read/write access to commit status in all repositories.
public_repo	Grants read/write access to public repositories only.
admin:repo_hook	Grants access to repository hooks of all repositories. This is included in the `repo` scope.
write:repo_hook	Grants read/write access to repository hooks
read:repo_hook	Grants read-only access to repository hooks
admin:org	Grants full access to organization settings
write:org	Grants read/write access to organization settings
read:org	Grants read-only access to organization settings
admin:public_key	Grants full access for managing public keys
write:public_key	Grant read/write access to public keys
read:public_key	Grant read-only access to public keys
admin:org_hook	Grants full access to organizational-level hooks
notification	Grants full access to notifications
user	Grants full access to user profile info
read:user	Grants read access to user’s profile
user:email	Grants read access to user’s email addresses
user:follow	Grants access to follow/un-follow a user
delete_repo	Grants access to delete repositories as an admin
package	Grants full access to hosted packages
write:package	Grants read/write access to packages
read:package	Grants read access to packages
delete:package	Grants delete access to packages
admin:gpg_key	Grants full access for managing GPG keys
write:gpg_key	Grants read/write access to GPG keys
read:gpg_key	Grants read-only access to GPG keys
admin:application	Grants full access to manage applications
write:application	Grants read/write access for managing applications
read:application	Grants read access for managing applications
sudo	Allows to perform actions as the site admin.

Client types

Forgejo supports both confidential and public client types, as defined by RFC 6749.

For public clients, a redirect URI of a loopback IP address such as http://127.0.0.1/ allows any port. Avoid using localhost, as recommended by RFC 8252.

Example

Note: This example does not use PKCE.

Redirect to user to the authorization endpoint in order to get their consent for accessing the resources:
```
https://[YOUR-FORGEJO-URL]/login/oauth/authorize?client_id=CLIENT_ID&redirect_uri=REDIRECT_URI& response_type=code&state=STATE
```
The CLIENT_ID can be obtained by registering an application in the settings. The STATE is a random string that will be send back to your application after the user authorizes. The state parameter is optional but should be used to prevent CSRF attacks.

The user will now be asked to authorize your application. If they authorize it, the user will be redirected to the REDIRECT_URL, for example:
```
https://[REDIRECT_URI]?code=RETURNED_CODE&state=STATE
```

Using the provided code from the redirect, you can request a new application and refresh token. The access token endpoints accepts POST requests with application/json and application/x-www-form-urlencoded body, for example:

POST https://[YOUR-FORGEJO-URL]/login/oauth/access_token

{
  "client_id": "YOUR_CLIENT_ID",
  "client_secret": "YOUR_CLIENT_SECRET",
  "code": "RETURNED_CODE",
  "grant_type": "authorization_code",
  "redirect_uri": "REDIRECT_URI"
}

Response:

{
  "access_token": "eyJhbGciOiJIUzUxMiIsInR5cCI6IkpXVCJ9.eyJnbnQiOjIsInR0IjowLCJleHAiOjE1NTUxNzk5MTIsImlhdCI6MTU1NTE3NjMxMn0.0-iFsAwBtxuckA0sNZ6QpBQmywVPz129u75vOM7wPJecw5wqGyBkmstfJHAjEOqrAf_V5Z-1QYeCh_Cz4RiKug",
  "token_type": "bearer",
  "expires_in": 3600,
  "refresh_token": "eyJhbGciOiJIUzUxMiIsInR5cCI6IkpXVCJ9.eyJnbnQiOjIsInR0IjoxLCJjbnQiOjEsImV4cCI6MTU1NzgwNDMxMiwiaWF0IjoxNTU1MTc2MzEyfQ.S_HZQBy4q9r5SEzNGNIoFClT43HPNDbUdHH-GYNYYdkRfft6XptJBkUQscZsGxOW975Yk6RbgtGvq1nkEcklOw"
}

The CLIENT_SECRET is the unique secret code generated for this application. Please note that the secret will only be visible after you created/registered the application with Forgejo and cannot be recovered. If you lose the secret you must regenerate the secret via the application’s settings.

The REDIRECT_URI in the access_token request must match the REDIRECT_URI in the authorize request.

Use the access_token to make API requests to access the user’s resources.