Alright, let's get started! Head over to your workspace in Xano, then navigate to the API section. Here, you'll want to create a new custom API endpoint. This is where all the magic happens with your custom API response codes.

Next up, set up your API endpoint with the necessary input parameters. Make sure you structure your output schema too. Define the data types and parameters that you expect in both the request and response. It's like setting the stage for a play!

Now, inside your shiny new API endpoint, add some logic to check for different conditions that might need a custom response code. Use Xano’s built-in functions and expressions to set these conditions. For instance, if you need to check if a certain input parameter is missing or invalid, you could do something like this:

if (!input.param_name) {
  // Set the custom response here
}

Time to use the "Set Response" function to specify custom response codes based on the conditions you set earlier. For example, if a parameter is missing, you might want to return a 400 Bad Request response:

if (!input.param_name) {
  set_response(400, { "error": "Parameter 'param_name' is required" });
  return;
}

Want a different status code? Just change the first argument of the set_response function to whatever HTTP status code you need.

Finally, if everything checks out, set a success response code (usually 200 or 201) and return the appropriate data:

set_response(200, { "message": "Success", "data": your_data });

Make sure your logic block covers both custom error codes and standard success codes. You want your API to be as smooth as butter.

Deploy your API endpoint and run some tests. Check if it returns the correct status codes and messages based on different input scenarios. Tweak your conditions and response settings as needed based on what you find. Testing is like a dress rehearsal for your API!

Last but not least, document all the custom response codes and their meanings. This is super helpful for future reference and for other developers who might use your API. Clear documentation ensures everyone is on the same page.

By following these steps, you can handle custom API response codes in Xano like a pro, making your endpoints robust and reliable.