diff --git a/AGENTS.md b/AGENTS.md
index 1859d7f6310c7ca2e6a83f5369d7300ebd31d8a8..c822371861d88c7a36ad515123e7c6810f76d815 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -1,3 +1,9 @@
+<!--
+SPDX-FileCopyrightText: Amolith <amolith@secluded.site>
+
+SPDX-License-Identifier: Unlicense
+-->
+
 # AGENTS.md
 
 ## Project Overview
diff --git a/LICENSES/Unlicense.txt b/LICENSES/Unlicense.txt
new file mode 100644
index 0000000000000000000000000000000000000000..cde4ac6981861bbb9025ce5e77a4a0e232fe6329
--- /dev/null
+++ b/LICENSES/Unlicense.txt
@@ -0,0 +1,10 @@
+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a compiled binary, for any purpose, commercial or non-commercial, and by any means.
+
+In jurisdictions that recognize copyright laws, the author or authors of this software dedicate any and all copyright interest in the software to the public domain. We make this dedication for the benefit of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of relinquishment in perpetuity of all present and future rights to this software under copyright law.
+
+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 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.
+
+For more information, please refer to <http://unlicense.org/>
diff --git a/README.md b/README.md
index 41b06c2a76576acbdf1bb8f359e6876f62d0b92d..06c2b2b57a95488fa23cd52f4dea7502e5de49ce 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,9 @@
+<!--
+SPDX-FileCopyrightText: Amolith <amolith@secluded.site>
+
+SPDX-License-Identifier: Unlicense
+-->
+
 # synclaude.fish
 
 A Fish wrapper for the `claude` CLI that routes requests through
diff --git a/completions/synclaude.fish b/completions/synclaude.fish
index 4429380a8d2950539a8d5d3c5e9ccbcc333685ba..7f5daca0bf23ac8dec6b474c6636d95a5a8cd0d3 100644
--- a/completions/synclaude.fish
+++ b/completions/synclaude.fish
@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: Amolith <amolith@secluded.site>
+#
+# SPDX-License-Identifier: Unlicense
+
 # Inherit all claude completions
 complete -c synclaude -w claude
 
diff --git a/functions/synclaude.fish b/functions/synclaude.fish
index d8f1a175b1d84eefa599b18978f48b38932055e9..c851a88f68bcf0f7c1cbdbf555beeeb39ea8a3ae 100644
--- a/functions/synclaude.fish
+++ b/functions/synclaude.fish
@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: Amolith <amolith@secluded.site>
+#
+# SPDX-License-Identifier: Unlicense
+
 function synclaude --wraps=claude --description "Run claude with Synthetic GLM-4.6 backend"
     set -l default_model hf:zai-org/GLM-4.6