polymarket-clob-client

You can place automated trades on Polymarket prediction markets by using a TypeScript SDK that handles wallet-based API credential derivation and HMAC-authenticated trading calls to submit limit and market orders via the CLOB v2 API.

Two-level authentication for Polymarket CLOB API trading uses a wallet signature (L1) to create or derive API keys, followed by HMAC credentials (L2) to authorize actual trading operations like placing and canceling orders.

To build a market-making bot for Polymarket, periodically fetch the order book to read the best bid/ask, calculate the spread, cancel stale orders, and re-quote around the mid price using authenticated CLOB API limit orders.

Yes, you need a viem wallet client to trade on Polymarket programmatically. You must integrate the clob-client-v2 by correctly supplying the chain, host, signer, and ApiKeyCreds for authenticated trading operations.

Yes, you can execute FOK (Fill or Kill) and FAK (Fill and Kill) market orders on the Polymarket CLOB. The SDK supports creating both limit orders and market orders with these specific execution styles.

For trading strategy automation, you can retrieve order books, markets, tickers, trades, balances, and positions from the Polymarket CLOB API to inform your bot's pricing and risk management logic.