Polymarket - OpenPX

MetaMask wallet

Put your credentials in .env.

POLYMARKET_PRIVATE_KEY=0x... # MetaMask EOA private key
POLYMARKET_FUNDER=0x... # Polymarket Safe address

(Find your Safe address at polymarket.com/settings.) Then pass them to the constructor:

import os
from openpx import Exchange

exchange = Exchange("polymarket", {
    "private_key": os.environ["POLYMARKET_PRIVATE_KEY"],
    "funder":      os.environ["POLYMARKET_FUNDER"],
})

import { Exchange } from "@openpx/sdk";

const exchange = new Exchange("polymarket", {
    private_key: process.env.POLYMARKET_PRIVATE_KEY,
    funder:      process.env.POLYMARKET_FUNDER,
});

use openpx::ExchangeInner;
use serde_json::json;

let exchange = ExchangeInner::new("polymarket", json!({
    "private_key": std::env::var("POLYMARKET_PRIVATE_KEY").unwrap(),
    "funder": std::env::var("POLYMARKET_FUNDER").unwrap(),
}))?;

Plain EOA (no Safe)

Drop POLYMARKET_FUNDER — that’s it.

If you get a Cloudflare WAF error

Polymarket blocks POST /auth/api-key from VPN / datacenter IPs. Generate keys once at polymarket.com/settings → API Keys, then add:

POLYMARKET_API_KEY=...
POLYMARKET_API_SECRET=...
POLYMARKET_API_PASSPHRASE=...

Then pass them to the constructor:

import os
from openpx import Exchange

exchange = Exchange("polymarket", {
    "private_key":    os.environ["POLYMARKET_PRIVATE_KEY"],
    "funder":         os.environ["POLYMARKET_FUNDER"],
    "api_key":        os.environ["POLYMARKET_API_KEY"],
    "api_secret":     os.environ["POLYMARKET_API_SECRET"],
    "api_passphrase": os.environ["POLYMARKET_API_PASSPHRASE"],
})

import { Exchange } from "@openpx/sdk";

const exchange = new Exchange("polymarket", {
    private_key:    process.env.POLYMARKET_PRIVATE_KEY,
    funder:         process.env.POLYMARKET_FUNDER,
    api_key:        process.env.POLYMARKET_API_KEY,
    api_secret:     process.env.POLYMARKET_API_SECRET,
    api_passphrase: process.env.POLYMARKET_API_PASSPHRASE,
});

use openpx::ExchangeInner;
use serde_json::json;

let exchange = ExchangeInner::new("polymarket", json!({
    "private_key": std::env::var("POLYMARKET_PRIVATE_KEY").unwrap(),
    "funder": std::env::var("POLYMARKET_FUNDER").unwrap(),
    "api_key": std::env::var("POLYMARKET_API_KEY").unwrap(),
    "api_secret": std::env::var("POLYMARKET_API_SECRET").unwrap(),
    "api_passphrase": std::env::var("POLYMARKET_API_PASSPHRASE").unwrap(),
}))?;