Kraken Exchange Error Code EAPI:Invalid nonce: How to Fix It

Easy 5-15 minutes Medium Severity Verified June 2026
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Error Code
EAPI:Invalid nonce
Brand
Kraken
Product Type
crypto_exchange
Severity
Medium
DIY Difficulty
Easy
Estimated Fix Time
5-15 minutes
The Kraken EAPI:Invalid nonce error occurs when your API request nonce value is not greater than the previous one used. This timing synchronization issue is common when making multiple API calls or when system clocks are out of sync.
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Tools You'll Need

How to Fix Error Code EAPI:Invalid nonce

  1. Check System Clock Synchronization

  2. Increase Nonce Window in API Settings

  3. Implement Proper Nonce Generation

  4. Add Request Delays

  5. Reset API Keys if Persistent

    Back up your API key and secret before deleting. You'll need to update all applications using the old credentials.

  6. Test with Single Request

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When to Call a Professional

Contact Kraken support if the error persists after trying all steps, especially if you suspect server-side timing issues or if you're unable to access your API settings due to account restrictions.

Frequently Asked Questions

What is a nonce in Kraken API?
A nonce is a unique number that increases with each API request to prevent replay attacks. Kraken requires each nonce to be greater than the previous one used.
Why does Kraken nonce error happen with trading bots?
Trading bots making rapid API calls can generate nonces too quickly or out of sequence. Implementing proper delays and nonce management in your bot code prevents this issue.
Can I use the same nonce twice on Kraken?
No, each nonce must be unique and greater than the previous one. Reusing or decreasing nonce values will trigger the invalid nonce error.
How long does it take for Kraken nonce to reset?
Nonces don't reset automatically. The nonce counter continues from the last used value. Only recreating API keys resets the nonce counter to zero.
What's the maximum nonce window on Kraken?
Kraken allows nonce windows up to 300 seconds (5 minutes). However, shorter windows of 30-60 seconds are recommended for better security while avoiding timing issues.

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