response_type: id_token (required, the tool must use a value of id_token)

redirect_uri: https://lti-ri.imsglobal.org/lti/tools/2578/launches (required, This URI must exactly match a value pre-registered with the platform)

response_mode: form_post (required, tools and platforms must support a value of form_post)

client_id: test_ruby_ri (required, client identifier valid at the Platform)

scope: openid (required, must contain the openid scope value)

state: eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6ImhLNjI5SDN2TmszZ1Y0NXlPbzI0cFpyUkRYeUlydG0wWUYtdnRaSWhLWk0iLCJ0eXAiOiJKV1QifQ.eyJ0b29sX2lkIjoyNTc4LCJzdGF0ZV9ub25jZSI6IjlhMDM4ZTU0ZDg4MDhjZjBjZjcyIiwicGFyYW1zIjp7ImNvbnRyb2xsZXIiOiJsdGkvbG9naW5faW5pdGlhdGlvbnMiLCJhY3Rpb24iOiJpbmRleCIsInRvb2xfaWQiOiIyNTc4In0sImlzcyI6InRlc3RfcnVieV9yaV90b29sIiwic3ViIjoidGVzdF9ydWJ5X3JpIiwiYXVkIjoiaHR0cHM6Ly9sZWFmZGV2MDYudWNoaWRhLmNvLmpwL3BsYXRmb3Jtcy8xL2FjY2Vzc190b2tlbnMiLCJpYXQiOjE3NzU4NDA2NjksImV4cCI6MTc3NTg0MDk2OSwianRpIjoiNWUyZDJjYTY4YjA2ZWQxMDlkMTIifQ.lFG1JDGy7gonUS-2aZZz8p_Mmidb-J0MoS1ZSH8dHPZ0YBTb5hAhjQupsEjDMoG5Y_WTIahfC-RCXILxXG5sXB-_CORug3QMqLS6pBAkYhaS-TyKTuUzUGZWyOMR6UkrKmeT_PbyL60CqxnPupSv2mdTsN4kpyvRdRVddPD05CDWJrHAY80cgHY4z3iaIq0zU4n3BAjqfg5-Q8FuYn0yNBv2LTAjw8W1XPDfm08AnzKZopOirYS8Wa0xyJB5I1vHM7fPuXrmnOw__aC2Fm8TtaRm08hFBmFycKH9IgfdRyZMeFQYJ77QlGIzN8mqI1eTb0XNxg9iLmL8O4RJXp5Kww (required, opaque value used to maintain state between the request and the callback)

login_hint: (required, tools and platforms must support a value of form_post)

lti_message_hint: (required, a platform opaque identifier identifying the user to login)

prompt: none (optional, The tool should use a value of none. In the future a re-launch flow may support additional values being used here)

nonce: 9a038e54d8808cf0cf72 (optional, string value used to associate a client session with an ID token, and to mitigate replay attacks)