IdentityServer publishes a discovery document where you can find metadata and links to all the endpoints, key material, etc.

You can use the following clients (see here for the code definition).

Click here to manage your stored grants.

client id: native.hybrid
grant type: hybrid with PKCE
allowed scopes: openid profile email api offline_access

client id: native.code
grant type: authorization code with PKCE
allowed scopes: openid profile email api offline_access

client id: server.hybrid
client secret: secret
grant type: hybrid
allowed scopes: openid profile email api offline_access

client id: server.code
client secret: secret
grant type: authorization code
allowed scopes: openid profile email api offline_access

client id: implicit
grant type: implicit
allowed scopes: openid profile email api

client id: implicit.reference
grant type: implicit
allowed scopes: openid profile email api

client id: implicit.shortlived
grant type: implicit
allowed scopes: openid profile email api

client id: client
client secret: secret
grant type: client credentials
allowed scopes: api

You can call a test API at https://demo.identityserver.io/api/test.