Step 1: Get your API keys
- Download the app - Get the Polymarket US app and create an account.
- Complete identity verification - You’ll be asked to verify your identity before you can trade or access the API. Once approved, you’ll see a confirmation in the app.

- Go to the developer portal - Visit polymarket.us/developer and sign in with the same method you used in the app (Apple, Google, or email).

- Create an API key - Click to create a new key. You’ll get a Key ID and a Secret Key.

Step 2: Install the SDK
TypeScript requires Node.js 18+. Python requires 3.10+.
Step 3: Configure the client
Step 4: Fetch market data
No authentication required for public endpoints.Step 5: Place an order
Check your account
Error handling
Next steps
TypeScript SDK
Full SDK reference for TypeScript.
Python SDK
Full SDK reference for Python.
API Reference
Explore all REST endpoints.
WebSockets
Stream live market data.