How to convert an API document into a widget

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API

I have this API documentation and am supposed to make into a more user-friendly plugin like a widget.

How do you do that?

Here’s a sample of the code;
POST /message?key=[KEY]&performerId=[id]&customerId=[id]&nickname=[nickname] HTTP/1.1
Host: [API]:80

[message]

Parameters
Name Required Type Description
key Yes string Supplied by VS. Please ask us for your key.
performerId Yes integer The id of the performer in whose room the chat should appear.
customerId No integer The unique id of the customer. If no id is provided, it is assumed that this is an unregistered customer.
nickname Yes string The name that this user will appear as in the chat.
post-data Yes string This is the message that the customer wishes to say to the room (max 200 chars).
Example Response
HTTP/1.1 200 OK
Content-Type: text/xml; charset=utf-8
Content-Length: [int]

{
success: true | false
message: [string]
}
Response Parameters
Name Description
success Whether or not your post was successful.
message An error message if success is false.



What I have tried:

I ahve the API documentation for different Requests and Responses however they seem rather slim in the details causing developers to spend a lot of time when integrating. Isn't there a way to take these docs and create a more user friendly plugin or template that a developer could more easily use?