Ethereum API Request Issued on Binance
As a developer working with Ethereum smart contracts, you rely heavily on APIs to interact with the Binance exchange. However, encountering an error while making a request is not uncommon. In this article, we will explore an issue you may encounter when using the Binance API’s general transfer call.
Issue: Required parameter ‘type’ not passed
When constructing your Ethereum API request, it appears that one of the required parameters, “type”, is omitted or missing from your query. This oversight may prevent your application from successfully processing the transaction.
To better understand the situation, let’s examine how Binance handles the general transfer call and find out what might be causing the issue.
Binance API Request Structure
The Binance API’s general transfer call requires three parameters:
- “Asset”: The cryptocurrency to be transferred (e.g. Ethereum).
- “value”: The amount of cryptocurrency to be transferred.
- “Type”: The transaction type, which can be one of the following:
send: Transfers funds from your account to another user.
receive: Transfers funds from another user to your wallet.
Problem: The required parameter ‘type’ was not sent
In your case, it appears that the type parameter is missing or you are sending an empty value. This can be caused by several factors, including:
- The API request is malformed.
- Misunderstanding the Binance API documentation or user guide.
- Using an outdated or incompatible version of the Binance API client library.
Solution: Add the required parameter type
To resolve this issue, you need to ensure that the type parameter is included in your API request. Here’s what you can do:
Option 1: Manually specify the transaction type
You can manually specify the transaction type when making an API request:
const params = {
asset: ETH,
value: 100, // in wei
type: 'send' // or any other valid value (e.g. 'receive', 'gasLimit')
};
Option 2: Update your Binance API client library
Make sure you are using the latest version of the Binance API client library. You can check the official Binance documentation for updates.
Additional Tips
- Be mindful of the size and structure of your API request. Make sure all parameters are properly formatted and included.
- Make sure your application is running with sufficient permissions to make API requests.
- Please keep an eye on Binance’s API policies or documentation for changes that may affect your API call.
Conclusion
The issue you are facing when using the generic transfer call on Binance requires attention to detail when constructing your Ethereum API request. By adding the required “type” parameter, you can resolve this issue and successfully process transactions. Be sure to ensure that all required parameters are included in your request, and keep an eye on Binance’s API policies or documentation for changes.
Example use case
To illustrate how to add the “type” parameter, let’s create a simple JavaScript function that sends a transfer:
function sendTransfer() {
const params = {
asset: ETH,
"value": 100,
'to': '0x...', // recipient address
type: 'send' // or any other valid value (e.g. 'receive')
};
fetch(' {
method: 'POST',
headers: {
"Content-Type": "application/json"
},
body: JSON.stringify(params)
})
.then(response => response.json())
.then(data => console.log(data))
.catch(error => console.error(error));
}
By following these steps, you can ensure that your Ethereum API requests are properly formatted and successfully executed on the Binance exchange.