Sync

Read-only. Public data. No email required. Disconnect anytime.

Polymarket

Paste your wallet address. Positions on Polymarket are public, on-chain data -- connecting only tells Billy which address is yours.

Paste a read-only API key. Keys are envelope-encrypted at rest and never stored in plaintext.

Arrives with the full Your Book, pending verification of Kalshi's terms for third-party apps holding read-only keys.