diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..7d69f91
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 sciman-top
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/README.en.md b/README.en.md
index ef54d17..292e703 100644
--- a/README.en.md
+++ b/README.en.md
@@ -11,6 +11,7 @@
   <img src="https://img.shields.io/badge/dependencies-zero%20(stdlib%20only)-brightgreen.svg" alt="Zero Dependencies">
   <img src="https://img.shields.io/badge/gh%20cli-official-2088FF.svg?logo=github" alt="GitHub CLI">
   <img src="https://img.shields.io/badge/tests-58%20passed-success.svg" alt="Unit Tests">
+  <a href="LICENSE"><img src="https://img.shields.io/badge/license-MIT-blue.svg" alt="License"></a>
 </p>
 
 <p align="center">
@@ -333,4 +334,4 @@ Test coverage highlights:
 
 ## License
 
-Distributed under the [MIT License](https://opensource.org/licenses/MIT). Issues and Pull Requests are warmly welcome!
+Distributed under the [MIT License](LICENSE). Issues and Pull Requests are warmly welcome!
diff --git a/README.md b/README.md
index cd8ebec..e980df1 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,7 @@
   <img src="https://img.shields.io/badge/dependencies-zero%20(stdlib%20only)-brightgreen.svg" alt="Zero Dependencies">
   <img src="https://img.shields.io/badge/gh%20cli-official-2088FF.svg?logo=github" alt="GitHub CLI">
   <img src="https://img.shields.io/badge/tests-58%20passed-success.svg" alt="Unit Tests">
+  <a href="LICENSE"><img src="https://img.shields.io/badge/license-MIT-blue.svg" alt="License"></a>
 </p>
 
 <p align="center">
@@ -332,4 +333,4 @@ python -m unittest -q test_toolkit.py
 
 ## 许可证
 
-本项目基于 [MIT 许可证](https://opensource.org/licenses/MIT) 开源。欢迎提交 Issue 或 Pull Request 共同完善！
+本项目基于 [MIT 许可证](LICENSE) 开源。欢迎提交 Issue 或 Pull Request 共同完善！