Ethereum: Getting a 500 Error response when using estimate API endpoint

Ethereum: Getting a “500 Internal Server Error” Response When Using the Estimate API Endpoint

When attempting to estimate the cost of an Ethereum transaction using the Safe Transaction Service (STS) API endpoint, you may encounter a “500 Internal Server Error”. This issue is not related to the data or information provided in the request, as confirmed by the Safe Transaction Service.

Issue:

The 500 error indicates that there was a problem with the server infrastructure. In this case, it is likely due to an unexpected condition that prevented the STS API from processing your request correctly. The “Internal Server Error” message provides more detailed information about what went wrong, but in most cases, you will not need to intervene or troubleshoot further.

Estimate API Endpoint:

The ESTIMATE endpoint is used to estimate the cost of Ethereum transactions. It is a POST request that takes two parameters: key and tx.

curl -X 'POST' \
“

Here are some possible reasons why you might be getting this error:

• Invalid or missing key: Make sure the key parameter is a valid Ethereum wallet key.

• Incorrect transaction format: Check that your transaction follows the API syntax. For example, if you are using a tx object with multiple accounts, make sure that they are properly defined and linked together.

• Network congestion or overload: If you are making multiple requests to the STS API at the same time, it may experience network congestion or overload. This could cause the server-side infrastructure to become unresponsive.

Troubleshooting Steps:

To resolve this issue, try the following:

• Verify that your key is valid and formatted correctly for Ethereum transactions.

• Ensure that your transaction follows the correct syntax and structure.

• If you are making multiple requests at once, consider increasing the number of simultaneous connections or reducing the frequency of requests.

Example Use Case:

Let’s say you have a trusted wallet with an existing private key (0x...). You can use it to estimate the cost of a transaction as follows:

curl -X 'POST' \
"

If you encounter any issues or errors during this process, please consider consulting the STS API documentation and their support resources for further assistance.

Bottom Line:

The “500 Internal Server Error” when using the ESTIMATE endpoint is typically caused by an unexpected condition on the server side. Verify that your key is valid, follow the correct transaction format, and make sure you are making multiple requests at once. If issues persist, please consult the STS API documentation and support resources for further guidance.

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Note: This article is based on common issues reported in various online forums and communities related to Ethereum, Safe Transaction Service, and the ESTIMATE endpoint. Always refer to the official STS API documentation for the most up-to-date information and troubleshooting guides.