{"endpoints":{"GET /next":"draw one value (advances your PRNG); sets a session cookie","POST /predict":"form field guess=<int>; correct -> flag"},"game":"Loaded Dice","note":"A wrong prediction burns your session (fresh seed required).","prng_source":"prng.py (handed out with the challenge)","rules":"GET /next draws a die (the top 32 bits of the house PRNG). When you think you can call the next roll, POST /predict with guess=<int>. Call it before the house rolls and the vault opens."}