Configure the wallet, then run strategies against the real Polymarket order book. Every live run is mirrored by a paper twin so execution quality can be measured against ideal fills.
Two different things go in here, and they are not the same address: your wallet key signs the orders, your Polymarket address holds the money. Where to find each is written under the fields.
0x, 64 characters. This is
the wallet you connected to Polymarket. It is not your
12-word Secret Recovery Phrase — never enter that anywhere.
Your key is stored only on this computer (owner-readable file), never in the database and never sent back to the browser.