Production-shaped CLOB API
Use familiar order, market, account, and position endpoints without changing your strategy architecture.
Polymarket Paper Trading API
Test Polymarket strategies against simulated balances with a one-line change in your systems.
host="https://clob.polymarket.com"host="https://clob.papermarket.io"Simulation Environment
Debug strategies before they touch real money.
from py_clob_client.client import ClobClient
from py_clob_client.clob_types import OrderArgs
from py_clob_client.constants import POLYGON
from py_clob_client.order_builder.constants import BUY
host = "https://clob.papermarket.io"
client = ClobClient(host, key=PRIVATE_KEY, chain_id=POLYGON, creds=creds)
order = OrderArgs(
price=0.42,
size=100,
side=BUY,
token_id=TOKEN_ID,
)
signed_order = client.create_order(order)
resp = client.post_order(signed_order)
print(resp)Simulated balances and positions
Run strategies against paper balances before committing real money.
Paper accounts at scale
Create paper trading accounts for users, bots, or strategies and manage each balance, position, and order stream separately.
Dashboard
One workspace for paper trading activity.
Place paper trades, manage open orders and positions, track balances, and manage multiple accounts on one UI. Use it for forward testing, debugging, and strategy iteration.
Open DashboardPAPERMARKET
Strategy Alpha
TradeProfile
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Pricing
Choose your plan.
Builder
$10/mo
For active developers testing strategies and demos.
- 10 paper accounts
- 120 API requests/min
Team
$99/mo
For teams running repeatable paper-trading workflows.
- Unlimited paper accounts
- 300 API requests/min