I’m having trouble using Foundry to download a contract’s source code from Etherscan. Despite having a valid API key, Foundry returns a “Missing/Invalid API Key” error.
This is confusing because I’ve verified that the API key works fine with other tools.
Here’s the command I’m using:
forge clone 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 WETH9
And here’s a snippet from my foundry.toml file:
[etherscan]
mainnet = { key = "my_actual_api_key_here" }
I’ve tried regenerating the API key, rechecking the setup, and even different configurations, but nothing seems to work. Any insights or solutions would be greatly appreciated.
I expected Foundry to successfully fetch the contract’s source code from Etherscan using the provided API key. I’ve double-checked the key in other applications, where it works perfectly. My expectation was that Foundry would perform the same without errors, but instead, it continually fails with the aforementioned error.
It sounds like you’ve run into a common issue where a tool or library might have trouble correctly interfacing with an external service, even when the credentials are correct.I got u bro.Here I have a structured approach or solution to troubleshoot and resolve the issue with Foundry and Etherscan API key integration:
You can try these methods
- Verify foundry.toml Configuration
Ensure your foundry.toml file is correctly formatted. The [etherscan] section should be properly configured with the correct API key. For example:
toml
Copy code
[etherscan]
mainnet = { key = “my_actual_api_key_here” }
Make sure there are no leading or trailing spaces in the key and the key is correctly copied from Etherscan.
- Confirm Etherscan API Key Validity
Double-check the validity of your API key. If it works with other tools but not Foundry, it could be a specific issue with how Foundry is handling the API key.
Check Key Permissions: Ensure that the API key has the appropriate permissions and is not restricted or expired.
API Key Regeneration: Regenerate the API key and update it in your foundry.toml file to rule out issues with the key itself.
3. Check Foundry Version and Updates
Ensure you are using the latest version of Foundry. Sometimes bugs are fixed in newer versions. You can update Foundry by running:
bash
Copy code
forge update
4. Verify Network Configuration
Make sure you are targeting the correct network. In your case, it looks like you are working with the Ethereum mainnet. Ensure the network configuration in Foundry matches your intent.
- Validate Command Usage
Double-check the command you’re using:
bash
Copy code
forge clone 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 WETH9
Make sure there are no syntax issues or misconfigurations. Sometimes, command-line arguments or flags might be incorrectly used.
-
Check for Known Issues and Bug Reports
Check the Foundry GitHub repository for any known issues or bug reports related to API key usage. There might be ongoing issues or fixes related to Etherscan integration. Look at issues or discussions for similar problems. -
Test with Different Contract
Try cloning a different contract to see if the issue persists. This can help determine if the problem is with the specific contract or with the overall configuration:
bash
Copy code
forge clone <another_contract_address> <some_name>
8. Debug and Log Information
Increase the verbosity of logging or debugging output to gather more information about the error. This can sometimes provide more detailed insights into what might be going wrong.
- Contact Support
If you’ve tried all the above steps and the issue persists, consider reaching out to Foundry or Etherscan support. Provide them with detailed information about the problem, including your foundry.toml configuration, the exact command you’re using, and any error messages you’re receiving.
Additional Troubleshooting
Environment Variables: Ensure that no environment variables are overriding the API key settings.
Local Configuration: Verify there are no conflicting local configurations or cache issues.
By following my steps, you should be able to pinpoint or subject the issue with Foundry not accepting your Etherscan API key and hopefully resolved it.
i hope that it found helpful for u.
Rubesh M IT is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.