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.eyJ0b29sX2lkIjoyNzIxLCJzdGF0ZV9ub25jZSI6ImIzZmU2YzE5MmVkYTJjMWE0NThhIiwicGFyYW1zIjp7ImNvbnRyb2xsZXIiOiJsdGkvbG9naW5faW5pdGlhdGlvbnMiLCJhY3Rpb24iOiJpbmRleCIsInRvb2xfaWQiOiIyNzIxIn0sImlzcyI6ImRlbW9uLWNvZGUgbWFuZGF0ZWQgcm9jay1vZmYiLCJzdWIiOiJqdXN0IGEgdHJpYnV0ZSIsImF1ZCI6Imh0dHBzOi8vbHRpLXJpLmltc2dsb2JhbC5vcmcvcGxhdGZvcm1zLzMwMTYvYWNjZXNzX3Rva2VucyIsImlhdCI6MTc4OTI3Mjg3OSwiZXhwIjoxNzg5MjczMTc5LCJqdGkiOiI2YWYyMTcyMjJlNzRlYzk2N2M5MiJ9.liiv6FVTnLknq5uWA_ev0wawXRdB5WxRoC4eqv4iDCU1pOcimhypk_0zD9UUNfgnhKFh4ZnMhd0Tdh7MKnCuoF7VI6amFUxOhOCGW5gQDzjUpb9ZXu4M2e5ydsh9kjv3cjtcmpMK2AoUrSuOILEMfbJEqcFIpG_Maf8lAAZphdZZBIcLuj-lt9rSOYguITftBBC5QgT2KXIkoOeawDSrCsmMNYrlg0VkqTTcrqYKeFl3l099MUIjTI3nGSDquHlLJs_pFs5W2k-wyc4sB3WGj5ZYbULrAn1-gcVSZ8zgcArAJKMWOneH3QY3TAUpb5g2HmseFwnTtcEoj2bhqisEXw (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: b3fe6c192eda2c1a458a (optional, string value used to associate a client session with an ID token, and to mitigate replay attacks)