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.eyJ0b29sX2lkIjoyNTc4LCJzdGF0ZV9ub25jZSI6IjBkZmQyNzZjMWRhZmFmNGQwZDRlIiwicGFyYW1zIjp7ImNvbnRyb2xsZXIiOiJsdGkvbG9naW5faW5pdGlhdGlvbnMiLCJhY3Rpb24iOiJpbmRleCIsInRvb2xfaWQiOiIyNTc4In0sImlzcyI6InRlc3RfcnVieV9yaV90b29sIiwic3ViIjoidGVzdF9ydWJ5X3JpIiwiYXVkIjoiaHR0cHM6Ly9sZWFmZGV2MDYudWNoaWRhLmNvLmpwL3BsYXRmb3Jtcy8xL2FjY2Vzc190b2tlbnMiLCJpYXQiOjE3ODUzMzQxNzUsImV4cCI6MTc4NTMzNDQ3NSwianRpIjoiNTg2YzEzNTkxZDhjY2RjYWE0NjcifQ.Y9nqvOhb4lZl4eJOFSAzV5lk03JxkRlVupaO38K9JS7Ngy0JAjb7P32hyU73-ntvYsKTJhWo1NYTBq32jKxeizTrgay42-J7v26KcW_tMwyl4M9qyzh4gsWEBoEWTv9OAKy5IW29LETVsxt_NuDAtFmIiXB-x29d4ILpQ1EnL_c6lF9lRuXW7Y0riB8Cm4WNi7Ma0vjcJ6P3OrGGqsrXn47Cx2uCV_DtCowCOd0VVjcF44Qg3LkcP8xCE2G_N-3PyY0bj6QB8R9EV0R0AUgN1CYppkz70Nfmrdfyu3mwCKzEDfBlZgZx3XUktDLUg1S5-z3F6aeu-rhMcIgKGrJ0oQ (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: 0dfd276c1dafaf4d0d4e (optional, string value used to associate a client session with an ID token, and to mitigate replay attacks)