diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..a1fdc5b
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 Angais and Minedit 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 76ceb82..9f3d1fa 100644
--- a/README.md
+++ b/README.md
@@ -336,11 +336,13 @@ Model output is still imperfect. Use `/reset build` and world backups while test
 
 - Built with the NeoForge MDK template. The template files are MIT licensed by the NeoForged project; see `TEMPLATE_LICENSE.txt`.
 - Uses NeoForge for Minecraft mod loading and APIs.
-- Bundles Mozilla Rhino `1.8.0` as the JavaScript runtime through NeoForge Jar-in-Jar. Rhino is licensed under the Mozilla Public License 2.0: https://www.mozilla.org/MPL/2.0/
+- Bundles Mozilla Rhino `1.8.0` as the JavaScript runtime through NeoForge Jar-in-Jar. Rhino remains licensed under the Mozilla Public License 2.0; its corresponding source and license details are listed in `THIRD_PARTY_NOTICES.md`.
 - Uses OpenRouter's OpenAI-compatible chat completions API.
 - Optionally uses the OpenAI Codex app-server through the local `bridge/` helper.
 - Optionally uses Cursor CLI through the local `bridge/` helper.
 
 ## License
 
-Minedit is currently published as All Rights Reserved unless a separate license is added later. NeoForge MDK template files keep their original MIT license, documented in `TEMPLATE_LICENSE.txt`.
+Minedit's original code, documentation, and assets are open source under the [MIT License](LICENSE).
+
+Third-party components keep their original licenses. See [THIRD_PARTY_NOTICES.md](THIRD_PARTY_NOTICES.md) and [TEMPLATE_LICENSE.txt](TEMPLATE_LICENSE.txt) for details.
diff --git a/THIRD_PARTY_NOTICES.md b/THIRD_PARTY_NOTICES.md
new file mode 100644
index 0000000..e6afd5c
--- /dev/null
+++ b/THIRD_PARTY_NOTICES.md
@@ -0,0 +1,43 @@
+# Third-Party Notices
+
+Minedit is licensed under the MIT License. The following third-party
+components and services are not relicensed under Minedit's MIT License.
+
+## NeoForge MDK template
+
+Some project scaffolding originated from the NeoForge MDK template and remains
+available under the MIT License from the NeoForged project. Its original
+license notice is preserved as `TEMPLATE_LICENSE.txt` in the source repository
+and `META-INF/LICENSE-NEOFORGE-MDK.txt` in the distributable JAR.
+
+Source: https://github.com/NeoForgeMDKs/MDK-1.21-ModDevGradle
+
+## Mozilla Rhino 1.8.0
+
+Minedit's distributable JAR embeds Mozilla Rhino 1.8.0 as its JavaScript
+runtime. Rhino is licensed under the Mozilla Public License 2.0.
+
+License: https://www.mozilla.org/MPL/2.0/
+
+Corresponding source: https://github.com/mozilla/rhino/tree/Rhino1_8_0_Release
+
+Minedit does not modify Rhino. Rhino remains governed by the MPL-2.0, and
+Minedit's MIT License does not restrict the rights granted for Rhino by that
+license.
+
+## Gradle Wrapper
+
+The Gradle wrapper scripts and wrapper JAR are distributed under the Apache
+License 2.0 by their respective copyright holders. The scripts retain their
+original license headers, and the wrapper JAR retains its embedded notices.
+
+License: https://www.apache.org/licenses/LICENSE-2.0
+
+Source: https://github.com/gradle/gradle
+
+## External platforms
+
+NeoForge, Minecraft, OpenRouter, OpenAI Codex, and Cursor are separate
+projects, products, or services governed by their own terms. Their names and
+APIs are referenced for interoperability; they are not relicensed as part of
+Minedit.
diff --git a/bridge/package.json b/bridge/package.json
index 89d2835..7dec64d 100644
--- a/bridge/package.json
+++ b/bridge/package.json
@@ -2,6 +2,7 @@
   "name": "minedit-codex-bridge",
   "version": "0.1.0",
   "private": true,
+  "license": "MIT",
   "type": "module",
   "scripts": {
     "start": "node minedit-codex-bridge.mjs"
diff --git a/build.gradle b/build.gradle
index a022e3a..d1c7830 100644
--- a/build.gradle
+++ b/build.gradle
@@ -184,6 +184,20 @@ tasks.withType(JavaCompile).configureEach {
     options.encoding = 'UTF-8' // Use the UTF-8 charset for Java compilation
 }
 
+tasks.named('jar', Jar).configure {
+    from('LICENSE') {
+        into 'META-INF'
+        rename { 'LICENSE-MINEDIT.txt' }
+    }
+    from('THIRD_PARTY_NOTICES.md') {
+        into 'META-INF'
+    }
+    from('TEMPLATE_LICENSE.txt') {
+        into 'META-INF'
+        rename { 'LICENSE-NEOFORGE-MDK.txt' }
+    }
+}
+
 // IDEA no longer automatically downloads sources/javadoc jars for dependencies, so we need to explicitly enable the behavior.
 idea {
     module {
diff --git a/gradle.properties b/gradle.properties
index fa14be1..8eeb6e2 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -23,8 +23,8 @@ neo_version=26.1.2.73
 mod_id=minedit
 # The human-readable display name for the mod.
 mod_name=Minedit
-# The license of the mod. Review your options at https://choosealicense.com/. All Rights Reserved is the default.
-mod_license=All Rights Reserved
+# SPDX license identifier for Minedit's original code and assets.
+mod_license=MIT
 # The mod version. See https://semver.org/
 mod_version=1.5.1
 # The group ID for the mod. It is only important when publishing as an artifact to a Maven repository.
diff --git a/src/main/templates/META-INF/neoforge.mods.toml b/src/main/templates/META-INF/neoforge.mods.toml
index 2ffa9e9..454b613 100644
--- a/src/main/templates/META-INF/neoforge.mods.toml
+++ b/src/main/templates/META-INF/neoforge.mods.toml
@@ -4,8 +4,7 @@
 # Note that there are a couple of TOML lists in this file.
 # Find more information on toml format here:  https://github.com/toml-lang/toml
 
-# The license for you mod. This is mandatory metadata and allows for easier comprehension of your redistributive properties.
-# Review your options at https://choosealicense.com/. All rights reserved is the default copyright stance, and is thus the default here.
+# SPDX identifier for the license covering Minedit's original code and assets.
 license="${mod_license}"
 
 # A URL to refer people to when problems occur with this mod