Troubleshooting Serper Key Connection Errors

Fatima G. · 2025-12-05T22:35:51.606Z

Hi everyone, I keep seeing this error when trying to connect my serper key. How do I fix this

Troubleshooting Serper Key Connection Errors | Clay

Clay Support
APP
·
·
That 403 "Unauthorized" error means your Serper API key isn't valid or properly configured.
To fix this:
1.
Get a valid Serper API key - Create an account at serper.dev and obtain your unique API key
2.
Update your Clay integration - Go to Settings > Connections, find Serper, click the ... menu next to your account, select Edit, and enter the correct API key [1] [2]
3.
Test the connection - Use the Test Connection option to verify it works
Before we escalate this, try using Sculptor (top-right corner) - it can help diagnose API configuration issues and guide you through the setup. Let me know if Sculptor helps or if you need further assistance!
Clay Support
APP
·
·
Is that what you were looking for?
Clay Support
APP
·
·
If you still need help resolving the Serper API key error, I’m here to assist you further. Would you like to provide more details about what you’re trying to achieve or any other issues you’re encountering?
Fatima G.
·
·
let me try
Clay Support
APP
·
·
Take your time trying that out, and if you still need help with the Serper API key issue, I’m here to assist. Would you like to share more about what you’re aiming to accomplish or any other challenges you’re facing?
Taimoor A.
·
·
in header where you use X key
Clay Support
APP
·
·
For the Serper API key in headers, use:
Key: X-API-Key
Value: YOUR_SERPER_API_KEY_HERE
This is the standard format for API key authentication in HTTP headers. [1] [2]
Clay Support
APP
·
·
Did that answer your question?
Taimoor A.
·
·
there you have also authorisation key get the key from serper.dev and put in the api call you do then check 403 error in api call mean that un authorised key you used
Clay Support
APP
·
·
Exactly right! The 403 error confirms your Serper API key is unauthorized or invalid. [1]
To fix this:
1.
Get a valid API key from serper.dev [2]
2.
In your HTTP API call, use header: X-API-Key: YOUR_SERPER_API_KEY
3.
Make sure the key is active and has proper permissions
The 403 "Unauthorized" response means the API doesn't recognize your key as valid for that endpoint.
Clay Support
APP
·
·
Is that what you were looking for?
Clay Support
APP
·
·
If you still need help with the Serper API key authorization issue, I’m here to assist you further. Would you like to provide more details about what you’re trying to resolve or any other challenges you’re facing?
Taimoor A.
·
·
and error 403 means you not sign up to the account to serper.dev
Clay Support
APP
·
·
Exactly! A 403 error typically means the API key is invalid or unauthorized, which often happens when you haven't signed up for an account at serper.dev. [1]
To fix this, you need to:
1.
Create an account at serper.dev (first 2,500 queries are free) [2]
2.
Get your valid API key from your account
3.
Use that key in your Clay integration
The error confirms your current key isn't recognized by Serper's system.
Clay Support
APP
·
·
Does this help?

16 comments