Connect Exchanges

Spreadr executes trades on your behalf using exchange credentials — but you never handle raw API keys. Every venue connects with one click: Spreadr generates a fresh trading key (an agent wallet or venue sub-key) in your browser, registers it with the exchange, and stores it encrypted. You just sign a few wallet messages.

The flow

1. Fund the venue's account (USDC deposit) — Spreadr can trade only what's deposited there.
2. In Spreadr's terminal: Settings → Wallets, pick the wallet you want to trade with, and click + [venue] under Exchange Connections.
3. Click the connect button and sign the wallet prompts (2–4 messages depending on the venue: key/agent authorization, fee authorization, and the credential vault unlock).
4. Done — nothing to copy, nothing to paste.

Because connecting registers the key with the exchange live, most problems (unfunded account, unsupported region, wrong network) surface immediately during the connect flow rather than later.

Each venue's page has the specifics:

• Hyperliquid — agent wallet (parent stays safe)
• Extended — Stark sub-key
• Lighter — signing key generated in-browser
• Orderly — ed25519 key
• Aster — agent wallet
• trade[xyz] — covered automatically when you connect Hyperliquid

Multi-wallet credentials

You can connect exchanges under multiple linked wallets — for example a primary wallet with full collateral and a second wallet with limited collateral for testing. Each connection is tagged with its wallet; when you create a spread trade, you pick which wallet provides the credential for each leg.

What Spreadr does with the credentials

Keys are decrypted only while one of your trades is running, used to sign orders and cancels for that trade, and discarded from memory when it ends. They're never written to disk or logs in plaintext, and they can't withdraw funds on most venues (Lighter is the exception — see its page for the safest setup). Full details in Security.

Rotating credentials

To replace a venue key (e.g. you suspect compromise, or rotating periodically):

1. In Settings → Wallets, find the exchange connection under the wallet and delete it ([DEL])
2. Click + [venue] and run the connect flow again — a fresh key is generated and registered
3. New trades use the new credential. Active trades continue with whatever credential they started with.