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Kraken is a cryptocurrency exchange. Sure connects to Kraken using a read-only API key and imports your combined crypto holdings and spot trade history. See Transaction history and import limits for initial sync defaults, history limits, and options for older transactions.

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What is imported

Sure imports one combined Crypto exchange account per Kraken connection, containing:
  • Current crypto holdings and balances
  • Spot trade fills (buy/sell history)
  • Deposits and withdrawals — each imported as two entries: the principal and a separate fee entry, so the transfer can be matched to your receiving account
  • Staking rewards and Earn income
  • Dust sweeps (“convert small balances”) as paired Sweep In / Sweep Out entries
  • Standalone fiat fees
Crypto ledger entries (deposits, withdrawals, staking rewards, and so on) are recorded as trades that carry a unit quantity and the price on the day they moved, not as cash transactions. This keeps your crypto position history accurate and separate from your cash balance.

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Setting up Kraken

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Step 1: Create a Kraken API key

  1. Go to Kraken API settings.
  2. Create a new API key with the following permissions only:
    • Query Funds
    • Query Closed Orders & Trades
    • Query Ledger Entries
Do not grant trading, cancellation, withdrawal, export, or transfer permissions. Sure only needs read access. Granting write permissions is unnecessary and a security risk.
  1. Copy the API Key and Private Key shown after creation.

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Step 2: Add the connection in Sure

  1. Go to Settings → Providers.
  2. Find the Kraken section.
  3. Enter a connection name, paste your API Key and Private Key, and save.
  4. Sure begins syncing your Kraken exchange account automatically.

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Step 3: Import the account

After the first sync, your Kraken exchange account appears in the setup queue. Click Import Account in the provider panel to add it to your account list.

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Multiple connections

If you have multiple Kraken accounts, add a separate named connection for each one. Each connection imports one combined crypto account.

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Troubleshooting

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Credentials need updating

If the connection shows a reconnect prompt, your API key may have been revoked or the credentials may have expired. Generate a new API key from Kraken and update the connection in Settings → Providers → Kraken.

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No accounts found

After adding a connection, wait for the first sync to complete. If no accounts appear after syncing, verify that your API key has the Query Funds permission enabled.

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Balance shown as approximate

When the exact exchange rate for a given date is unavailable, Sure shows the balance as approximate. The balance updates to the exact figure on the next sync when rate data becomes available.

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Crypto holdings history looks wrong for older accounts

If your Kraken account was connected before October 2026, crypto ledger entries may have been recorded as cash transactions rather than unit-carrying trades. Sure corrects these automatically on the next sync — no re-import or manual action is needed. Entries you have manually edited or matched into a transfer are left as-is.