Trello API Invalid Token Error: How to Fix It

Easy 5-10 minutes High Severity Verified June 2026
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Error Code
invalid token
Brand
Trello
Product Type
productivity
Severity
High
DIY Difficulty
Easy
Estimated Fix Time
5-10 minutes
The Trello invalid token error occurs when your API authentication token has expired, been revoked, or is incorrectly formatted. This prevents third-party applications, integrations, or API calls from accessing your Trello boards and data.
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Tools You'll Need

How to Fix Error Code invalid token

  1. Check Token Status in Trello

  2. Revoke the Old Token

    Revoking your token will immediately break all applications currently using it until you update them with the new token.

  3. Generate a New API Token

    Never share your API token publicly or store it in unsecured locations. Treat it like a password.

  4. Update Your Application Settings

  5. Test the Connection

  6. Check Token Permissions

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When to Call a Professional

Contact your development team or the application vendor if you're using a third-party integration and don't have access to update the token settings yourself. For enterprise Trello accounts, consult your IT administrator if token management is restricted.

Frequently Asked Questions

Why did my Trello API token become invalid?
Trello tokens can become invalid due to expiration (though most don't expire), manual revocation, account security changes, password resets, or if Trello detects suspicious activity on your account.
How long do Trello API tokens last?
Most Trello API tokens don't have an expiration date and remain valid indefinitely unless manually revoked or your account security is compromised. However, it's good practice to rotate tokens periodically for security.
Can I have multiple API tokens for different applications?
Yes, you can generate multiple API tokens for different applications or services. Each token can have different permissions and can be managed independently through your Trello app-key page.
What should I do if I can't access the Trello app-key page?
If you can't access trello.com/app-key, try logging out and back into Trello, clearing your browser cache, or using an incognito window. If problems persist, contact Trello support as there may be an account-level issue.
How do I know what permissions my API token has?
When you generate a token, Trello shows the permissions it will have. For existing tokens, the permissions are typically read/write for your boards unless specifically limited during creation. You may need to regenerate the token to change permissions.

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