The Polymarket API
for Automated Trading
Build Polymarket bots, access CLOB orderbooks, and execute trades programmatically. The complete Polymarket trading API — free to start.
Complete Polymarket API Access
Everything you need to build automated trading systems on Polymarket
CLOB Integration
Full access to Polymarket's Central Limit Order Book. Place limit orders, access orderbook depth, and get real-time fills.
Position Management
Open, close, and monitor positions across all Polymarket markets. Track unrealized P&L and exposure in real-time.
Bot Builder API
Create and manage trading bots programmatically. Configure strategies, set parameters, and deploy bots via API calls.
Arbitrage Detection
Access our arbitrage scanner API to find price discrepancies across markets and execute arbitrage strategies.
Secure Execution
AES-256 encrypted wallet keys. Managed custodial wallets with enterprise-grade security. Gasless transactions via Smart Accounts.
AI Agent Support
Connect AI agents via MCP to analyze Polymarket data, generate strategies, and execute trades autonomously.
Trade Polymarket via API in 3 Steps
From API key to live Polymarket trading
Get Your API Key
Create a free account and generate an API key. A Polymarket wallet is created automatically.
Connect & Build
Use our REST API to access Polymarket data, create bots, and build your trading system.
Trade Live
Fund your wallet and start executing trades on Polymarket programmatically, 24/7.
Start Trading Polymarket for Free
No credit card required. Upgrade as you grow.
Free
- 1,500 credits
- 60 req/min
- 1 active bot
- Market data API
- Community support
Pro
- 75,000 credits/mo
- 1,000 req/min
- Unlimited bots
- MCP support
- Priority support
Unlimited
- 200,000 credits/mo
- 5,000 req/min
- Unlimited bots
- Dedicated support
- Early access
Polymarket API Questions
Ready to Trade Polymarket via API?
Automate Polymarket trades with PredictEngine
Free API key included with every account