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README.md

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 # gc-opencommand-plugin
 
+中文 | [English](README_en-US.md)
+
 一个为第三方客户端开放GC命令执行接口的插件
 
 # 服务端安装

README_en-US.md

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+# gc-opencommand-plugin
+
+[中文](README.md) | English
+
+A plugin that opens the GC command execution interface for third-party clients
+
+# Server installation
+1. Download the `jar` in [Release](https://github.com/jie65535/gc-opencommand-plugin/releases)
+2. Put it in the `plugins` folder
+
+# Build
+1. `git clone https://github.com/jie65535/gc-opencommand-plugin`
+2. `cd gc-opencommand-plugin`
+3. `mkdir lib`
+4. `mv path/to/grasscutter-1.x.x-dev.jar ./lib`
+5. `gradle build`
+
+# Player
+1. Fill in the service address in the client to confirm whether it supports
+2. Fill in the UID and send the verification code
+3. Fill in the **4-digit integer verification code** received in the game into the client verification
+4. Enjoy the convenience!
+
+# Client request
+1. `ping` to confirm whether the `opencommand` plugin is supported
+2. `sendCode` sends a verification code to the specified player (re-send is not allowed within 1 minute), and save the returned `token`
+3. Send `verify` check using `token` and **4-digit integer verification code**
+4. If the verification is passed, you can use the `token` to execute the `command` action
+
+---
+
+# API `/opencommand/api`
+Example
+```
+https://127.0.0.1/opencommand/api
+```
+
+# Request
+```java
+public final class JsonRequest {
+    public String token = "";
+    public String action = "";
+    public Object data = null;
+}
+```
+
+# Response
+```java
+public final class JsonResponse {
+    public int retcode = 200;
+    public String message = "success";
+    public Object data;
+}
+```
+
+# Actions
+## `ping`
+data = null
+
+## `sendCode`
+### Request
+data = uid (int)
+### Response
+data = token (string)
+
+## `verify`: Requires `token`
+### Request
+data = code (int)
+### Response
+#### Success:
+code = 200
+#### Verification failed:
+code = 400
+
+## `command`: Requires `token`
+### Request
+data = command (string)
+### Response
+data = message (string)