Polymarket US

Connect your account

This browser only

Two keys from Polymarket US, one signed test request, and this app trades your account — balances, live prices, real orders. Your keys are verified with the venue, then kept only in this browser — Alto's servers store nothing.

Step 1 · Get your API keys

Create your Polymarket US account in their app and finish identity verification — trading and API access open only after it.
Open polymarket.us/developer ↗ and sign in with the same method you used in their app (Apple, Google, or email — switching methods can break key access).
Create a key and copy both values. The secret is shown once — if you lose it, revoke and re-create at the same page.

Step 2 · Connect

Your keys are verified with one signed, read-only request to Polymarket US, then stored on this device only. They are never stored on Alto's servers.

Invite code

This beta seats 15 people. Your code is single-use and is spent when you connect.

Key ID

Secret key

We guessed US from your connection. — a VPN or travelling will throw this off.