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.eyJ0b29sX2lkIjoyNTc4LCJzdGF0ZV9ub25jZSI6IjY0N2I2MDdlMjY0NDJiY2Y5MWMzIiwicGFyYW1zIjp7ImNvbnRyb2xsZXIiOiJsdGkvbG9naW5faW5pdGlhdGlvbnMiLCJhY3Rpb24iOiJpbmRleCIsInRvb2xfaWQiOiIyNTc4In0sImlzcyI6InRlc3RfcnVieV9yaV90b29sIiwic3ViIjoidGVzdF9ydWJ5X3JpIiwiYXVkIjoiaHR0cHM6Ly9sZWFmZGV2MDYudWNoaWRhLmNvLmpwL3BsYXRmb3Jtcy8xL2FjY2Vzc190b2tlbnMiLCJpYXQiOjE3OTM2MDA1ODEsImV4cCI6MTc5MzYwMDg4MSwianRpIjoiZDU3NTNiMDU2OTkwYTA0MjlmMjUifQ.Rf_LJFAiYLWEylxqaZRWPFiLEWbLZ2xyb0WwjQPPZttVamoyGo5RinHBnLuPycSlRoDJi8kKdpBvJnk2JKeo4p8XXOsvRndLz0_rR0NIc6cnC7f-qZj6l7M6UcsP5-Iys8UdZHRMRG1ICRiM1xFuwPxbZeBGVBvtZLlNBfpp0hZRsKR-OC8UECjuiPLnfkhBcu4g7_OZM6XmtFbWXeLcPAGtj9sJv4OFN1nNrwv4HJ326_ZJOlhFXpD3bGPyCZYgH2UqUYexkjKMXM2gmkz5_mz0Chgp0iepGgR_9PwxR3ArQL80SVfU7BOukdCxLBn-j9GDG0NpTv5hnfwXIORXZg (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: 647b607e26442bcf91c3 (optional, string value used to associate a client session with an ID token, and to mitigate replay attacks)