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

redirect_uri: https://lti-ri.imsglobal.org/lti/tools/2721/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: just a tribute (required, client identifier valid at the Platform)

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

state: eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6ImY4YkQtUElGNm9FQmlueVBGSnRVT0k0d3VTbXBQU1VaWXV0Z01fV3FEUEkiLCJ0eXAiOiJKV1QifQ.eyJ0b29sX2lkIjoyNzIxLCJzdGF0ZV9ub25jZSI6IjRhYWVhNTg1NTQ1NGI2ZmExNTg4IiwicGFyYW1zIjp7ImNvbnRyb2xsZXIiOiJsdGkvbG9naW5faW5pdGlhdGlvbnMiLCJhY3Rpb24iOiJpbmRleCIsInRvb2xfaWQiOiIyNzIxIn0sImlzcyI6ImRlbW9uLWNvZGUgbWFuZGF0ZWQgcm9jay1vZmYiLCJzdWIiOiJqdXN0IGEgdHJpYnV0ZSIsImF1ZCI6Imh0dHBzOi8vbHRpLXJpLmltc2dsb2JhbC5vcmcvcGxhdGZvcm1zLzMwMTYvYWNjZXNzX3Rva2VucyIsImlhdCI6MTc5MzczMzE1OSwiZXhwIjoxNzkzNzMzNDU5LCJqdGkiOiIwM2EwMjk2ZmZlMzk5MDM2MTIyNCJ9.RA81Xs4b6bPnvEG28d_0nkqS1OUSvrRYJs0FH2i0HTl9l1h_ZtBpGfY3RBoD9lTWxF2PXN-RR8rUzHg-_DJm1qwJ4ONq7polBrOBcEdjCJILSINts4OZkJMBtP26503H4iQ1wDeJW6_ud-g45Bg1-LvsLbzEZWx6y384fFxGBNY3M3-EXTgRGCMdVOwt7Rq-g4jtLCuFXsfp4YTCOPqx1k-dw1p-7MNEbbrRsPESlmsG9lTGnAKCIkGA3AlzOK2bjmUbwBG8uvaupD3htK1pw1UTPr3OT8NeAeEqASi0GvxC5wt8nL3ZTu5aCulmW6uMRjqqB7vAeuaUAz4gV5poEA (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: 4aaea5855454b6fa1588 (optional, string value used to associate a client session with an ID token, and to mitigate replay attacks)