diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..dd8e631
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 KwiTsukasa / KT contributors
+
+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.md b/README.md
index c4212a5..84ad8ad 100644
--- a/README.md
+++ b/README.md
@@ -163,3 +163,10 @@ pnpm run admin-login -- --url http://127.0.0.1:5999/#/auth/login
 - 更新 Obsidian 图谱、模块页、文档矩阵或 `.obsidian` 配置后运行 `kt_obsidian_validate` / `pnpm run obsidian-validate`；整理工作流入口时再跑 `kt_obsidian_sync`。
 - 改完文件后用 `kt_append_task_record` 先 `dryRun` 预览记录，再决定是否写入。
 - 提交前调用 `kt_commit_checklist`，确认文件范围和提交信息。
+
+## 来源与许可证
+
+| 一级来源 | 使用方式 | License |
+| --- | --- | --- |
+| [multica-ai/andrej-karpathy-skills](https://github.com/multica-ai/andrej-karpathy-skills) | `skills/karpathy-guidelines` 和 ktWorkflow 防偏差闭环的行为准则来源 | MIT |
+| [kepano/obsidian-skills](https://github.com/kepano/obsidian-skills) | Obsidian Markdown、Canvas、Bases 和 CLI 工作流的归纳整理能力来源 | MIT |