API Overview
The Retail API includes 14 REST endpoints + 1 WebSocket endpoint:| Category | Endpoints | Purpose |
|---|---|---|
| API Keys | 3 | Generate, list, revoke keys |
| Trading | 5 | Place, cancel, query orders |
| Portfolio | 2 | Positions and balances |
| Instruments | 3 | Market discovery |
| WebSocket | 1 | Real-time prices |
What You Can Do Now
- Generate API keys from web portal
- List available instruments
- Subscribe to real-time prices (up to 10 instruments)
- Place limit and market orders
- Cancel orders (single or all)
- Check open orders
- View positions and balances
What You Will Be Able to Do Soon
- Deposit or withdraw funds (use web)
- Modify existing orders (cancel + re-place instead)
- View P&L calculations (calculate client-side)
- Access historical price data (use external sources)
- Subscribe to more than 10 instruments
- Open multiple WebSocket connections
Need Higher Limits? Contact support after demonstrating legitimate use to request increased rate limits or connection quotas.
Other API Options
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- Username/password authentication
- gRPC streaming for high-performance trading
- REST API for order entry
- Visit apidocs.polymarketexchange.com
- API key authentication
- Full account management
- Payment processing
- KYC workflow automation