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.eyJ0b29sX2lkIjoyNzIxLCJzdGF0ZV9ub25jZSI6IjVhZjNiOGVhM2UwM2FiNTc0ZGEwIiwicGFyYW1zIjp7ImNvbnRyb2xsZXIiOiJsdGkvbG9naW5faW5pdGlhdGlvbnMiLCJhY3Rpb24iOiJpbmRleCIsInRvb2xfaWQiOiIyNzIxIn0sImlzcyI6ImRlbW9uLWNvZGUgbWFuZGF0ZWQgcm9jay1vZmYiLCJzdWIiOiJqdXN0IGEgdHJpYnV0ZSIsImF1ZCI6Imh0dHBzOi8vbHRpLXJpLmltc2dsb2JhbC5vcmcvcGxhdGZvcm1zLzMwMTYvYWNjZXNzX3Rva2VucyIsImlhdCI6MTc2NTIzMjYzOCwiZXhwIjoxNzY1MjMyOTM4LCJqdGkiOiJhYmRhN2NjYjdhYmUwYzkxOTQyNiJ9.L6kHXpSVHD0jrwN7P2Zut0LzJCm0eV9aEPEsI49BAEPc8s1QL1N9IMzOiyzRZg3tqMTKMQFiM-oh9JFLD4ZBFlug-upjui4kDcnZYh6anOLXJl-JCRwBDpHIKQrDEOwhjq27DVVxrIwdtUxCsy4cQbyXIcc8sgrBvbpH6aEa03_mt5YqxpMQjbhU7h6n6YRrxtDnjSWlT2uz-yFfRzNdBn35Tj3RzZckqqWe1lXEvtZLiUwqIp_bJNrFFCxMEkcSKnmVqtUfKm5te9s0_UT39RXQ8j_dLPRcUC8bj9BhEo7mP70Pt6yLs5grM1fDFHP3MZN_2SQ2Bq2Lg63HVma9XQ (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: 5af3b8ea3e03ab574da0 (optional, string value used to associate a client session with an ID token, and to mitigate replay attacks)