polymarket-trader 0.2.0

Polymarket CLOB trading CLI

Polymarket Trader CLI

A command-line tool for Polymarket CLOB trading: browse markets, inspect orderbooks, place/cancel orders, and run diagnostics. Built on py-clob-client.

Note: this repo contains the CLI/tooling only. Any AI skill definitions live in a separate repo.

Install

Recommended (uv):

uv tool install polymarket-trader

Also supported:

pipx install polymarket-trader
# or
pip install polymarket-trader

Quick Start (Polymarket UI / Proxy Wallet)

Most Polymarket accounts use a proxy (Safe) wallet that holds funds, while your MetaMask EOA signs orders. The UI shows the proxy address.

Create ~/.polymarket.env:

POLYMARKET_KEY=<your MetaMask private key>
POLYMARKET_SIG_TYPE=2
POLYMARKET_FUNDER=<proxy wallet address shown on Polymarket>
POLYMARKET_SIGNER=<your MetaMask EOA address>
POLYMARKET_RPC=https://polygon-rpc.com

Verify:

polymarket-trader whoami
polymarket-trader balance --asset-type collateral

If allowances are all zero, open Polymarket, click Buy on any market, and approve USDC (Enable trading).

Commands (examples)

List markets:

polymarket-trader markets --sampling --accepting-only --limit 50

Include titles:

polymarket-trader markets --sampling --with-title --limit 20

Orderbook / quote:

polymarket-trader orderbook <token_id>
polymarket-trader quote <token_id>

Buy with USD cap (best ask by default):

polymarket-trader buy-max <token_id> 5

Diagnostics:

polymarket-trader diagnose --onchain --fix

Full command list:

polymarket-trader --help

Environment variables

• POLYMARKET_KEY: signer private key (required for trading)
• POLYMARKET_SIG_TYPE: 0=EOA, 1=POLY_PROXY, 2=POLY_GNOSIS_SAFE
• POLYMARKET_FUNDER: proxy wallet address that holds collateral
• POLYMARKET_SIGNER: expected EOA address for safety checks
• POLYMARKET_ENV_FILE: override env file path (default ~/.polymarket.env)
• POLYMARKET_HOST: CLOB API host (default https://clob.polymarket.com)
• POLYMARKET_CHAIN_ID: chain id (default 137 for Polygon)
• POLYMARKET_RPC: RPC URL (used for onchain allowance/receipt checks)

Using from source (no install)

uv run --with py-clob-client -m polymarket_trader whoami
uv run --with py-clob-client -m polymarket_trader balance --asset-type collateral

Publishing

Build a wheel/sdist:

uv run --with build -m build

Safety

• Never paste private keys into chat or commit them to git.
• ~/.polymarket.env is loaded automatically and should be kept local.

License

MIT (see LICENSE).