Most Antminers have a WebSocket API that connects to the built in CGMiner software on port 4028.

You can test this in a command prompt in Windows, Mac, or Linux with (nc is a program called netcat which you may need to install):

echo -n "stats" | nc IP_OF_MINER_GOES_HERE 4028

There may also be a way to do this with CURL instead of netcat, but I have not had a chance to test it yet.

Code Examples:

api-example.php - a php script to access the API usAge: php api-example.php command by default it sends a 'summary' request to the miner at 127.0.0.1:4028 If you specify a command it will send that request instead You must modify the line "$socket = getsock('127.0.0.1', 4028);" at the beginning of "function request($cmd)" to change where it looks for cgminer

api-example.rb - a Ruby script to access the API. usage: ruby api-example.rb command[:parameter] [HOST [PORT]] This script prints the parsed cgminer API response

API.java/API.class a java program to access the API (with source code) usAge is: java API command address port Any missing or blank parameters are replaced as if you entered: java API summary 127.0.0.1 4028

api-example.c - a 'C' program to access the API (with source code)
usAge: api-example [command [ip/host [port]]] again, as above, missing or blank parameters are replaced as if you entered:
api-example summary 127.0.0.1 4028

Java Example

C Example

PHP Example

Python Example

Ruby Example

I've built a small script for my personal miners which will not work for most environments (due to reliance on data from SlushPool), but it may be useful for some code snippets (C#): Here