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Fix the “Invalid or inactive API key” error

Resolve REST API authentication errors.

Seeing “Invalid or inactive API key” when calling the REST API?

1. Open Integrations → API Keys and confirm the key is active (not revoked).
2. Make sure you copied the full key with no extra spaces.
3. Send it in the correct request header, as documented on the REST API page.
4. If in doubt, generate a new key and update your integration.

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