After cloning execute:
cd brain
composer install
Then, generate the SSH keys for LexikJWTAuthenticationBundle (https://github.com/lexik/LexikJWTAuthenticationBundle)
mkdir config/jwt
openssl genrsa -out config/jwt/private.pem -aes256 4096
openssl rsa -pubout -in config/jwt/private.pem -out config/jwt/public.pem
In case first openssl command forces you to input password use following to get the private key decrypted
openssl rsa -in config/jwt/private.pem -out config/jwt/private2.pem
mv config/jwt/private.pem config/jwt/private.pem-back
mv config/jwt/private2.pem config/jwt/private.pem
API documentation at /api/doc