diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index fc90208..868c484 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -168,7 +168,7 @@ jobs:
             desc "Coordination layer for parallel AI agents on top of git"
             homepage "https://github.com/rtk-ai/grit"
             version "VERSION_PLACEHOLDER"
-            license "MIT"
+            license "LicenseRef-Source-Available"
 
             on_macos do
               on_intel do
diff --git a/Cargo.toml b/Cargo.toml
index e9e69eb..8621f1e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,6 +5,7 @@ edition = "2021"
 description = "Coordination layer for parallel AI agents on top of git"
 keywords = ["git", "ai-agents", "experimental", "ast", "coordination"]
 categories = ["development-tools", "command-line-utilities"]
+license-file = "LICENSE"
 
 [dependencies]
 # CLI
diff --git a/LICENSE b/LICENSE
index c6eb09a..04ee68f 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,18 +1,41 @@
-MIT License
+GRIT SOURCE-AVAILABLE LICENSE v1.0
 
-Copyright (c) 2026 Patrick Szymkowiak
+Copyright (c) 2025-2026 RTK AI. All rights reserved.
 
-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:
+GRANTS
 
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
+You may view the source code and use the compiled binary of this software
+under the following terms:
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+1. INDIVIDUAL AND SMALL TEAM USE. Individuals and organizations with
+   twenty (20) or fewer total personnel (employees, contractors, and
+   agents combined) may use this software free of charge for any purpose,
+   including commercial use.
+
+2. ENTERPRISE USE REQUIRES A LICENSE. Organizations with more than twenty
+   (20) total personnel must obtain a commercial license from RTK AI
+   before using this software. Contact: contact@rtk-ai.app
+
+RESTRICTIONS
+
+3. NO COPYING OR REDISTRIBUTION. You may not copy, reproduce, distribute,
+   publish, or make available this software or any portion of its source
+   code, in whole or in part, in any form or by any means.
+
+4. NO DERIVATIVE WORKS. You may not modify, adapt, translate, or create
+   derivative works based on this software or its source code.
+
+5. NO SERVICE OFFERING. You may not offer this software, or any
+   functionality derived from it, as a hosted or managed service to
+   third parties.
+
+6. CONTRIBUTIONS. By submitting a contribution (pull request, patch, or
+   other modification) to this project, you irrevocably assign all rights,
+   title, and interest in your contribution to RTK AI.
+
+DISCLAIMER
+
+THIS 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
diff --git a/README.md b/README.md
index 8db017a..affec9b 100644
--- a/README.md
+++ b/README.md
@@ -156,4 +156,6 @@ TypeScript, JavaScript, Rust, Python (extensible via tree-sitter grammars)
 
 ## License
 
-MIT — Copyright (c) 2026 Patrick Szymkowiak
+Source-Available — Free for individuals and teams ≤20 people. Enterprise use requires a license. See [LICENSE](LICENSE) for details.
+
+Copyright (c) 2025-2026 RTK AI. All rights reserved.