見つけたのはhttps://auth.scratchfoundation.org/realms/prod-scratchfoundation/protocol/openid-connect/auth?client_id=scratch-foundation-%E2%80%93-web-%28dev%29-297821dc&scope=openid%20email%20profile&response_type=code&redirect_uri=https%3A%2F%2Fwww.scratchfoundation.org%2Fapi%2Fauth%2Fcallback%2Fskycloak&state=UaLYoCbucxlRKqMF6lquWKhkt3MISwAtH178D5CBR84&code_challenge=Gb1JH0CHWoSndxd17Hg0Gfa_ppzA9sIYe50FFPkBAoA&code_challenge_method=S256だよ
