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Source: https://docs.polymarket.com/developers/CLOB/clients

Polymarket has implemented reference clients that allow programmatic use of the API below:

• clob-client (Typescript)

• py-clob-client (Python)

  pip install py-clob-client
  
  from py_clob_client.client import ClobClient
  
  host: str = ""
  key: str = ""
  chain_id: int = 137
  
  ### Initialization of a client that trades directly from an EOA
  client = ClobClient(host, key=key, chain_id=chain_id)
  
  ### Initialization of a client using a Polymarket Proxy associated with an Email/Magic account
  client = ClobClient(host, key=key, chain_id=chain_id, signature_type=1, funder=POLYMARKET_PROXY_ADDRESS)
  
  ### Initialization of a client using a Polymarket Proxy associated with a Browser Wallet(Metamask, Coinbase Wallet, etc)
  client = ClobClient(host, key=key, chain_id=chain_id, signature_type=2, funder=POLYMARKET_PROXY_ADDRESS)

  //npm install @polymarket/clob-client
  //npm install ethers
  //Client initialization example and dumping API Keys
  
  import { ApiKeyCreds, ClobClient} from "@polymarket/clob-client";
  import { Wallet } from "@ethersproject/wallet";
  
  const host = 'https://clob.polymarket.com';
  const funder = '';//This is your Polymarket Profile Address, where you send UDSC to. 
  const signer = new Wallet(""); //This is your Private Key. If using email login export from https://reveal.magic.link/polymarket otherwise export from your Web3 Application
  
  //In general don't create a new API key, always derive or createOrDerive
  const creds = new ClobClient(host, 137, signer).createOrDeriveApiKey();
  
  //0: EOA
  //1: Magic/Email Login
  //2: Metamask
  const signatureType = 1; 
    
  (async () => {
      const clobClient = new ClobClient(host, 137, signer, await creds, signatureType, funder);
  })

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