diff --git a/.idea/matrixmania.iml b/.idea/matrixmania.iml
index c03f621..54daf84 100644
--- a/.idea/matrixmania.iml
+++ b/.idea/matrixmania.iml
@@ -2,7 +2,7 @@
 <module type="PYTHON_MODULE" version="4">
   <component name="NewModuleRootManager">
     <content url="file://$MODULE_DIR$" />
-    <orderEntry type="jdk" jdkName="Python 3.14" jdkType="Python SDK" />
+    <orderEntry type="jdk" jdkName="Python 3.13 (PythonProject)" jdkType="Python SDK" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
index 590a59e..a5ca7c8 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -3,5 +3,5 @@
   <component name="Black">
     <option name="sdkName" value="Python 3.14" />
   </component>
-  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.14" project-jdk-type="Python SDK" />
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.13 (PythonProject)" project-jdk-type="Python SDK" />
 </project>
\ No newline at end of file
diff --git a/AGENTS.md b/AGENTS.md
index 79a2eba..d62f282 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -1,4 +1,8 @@
 # Regeln für dieses Projekt
 - Code nach PEP 8, Zeilenlänge maximal 88 Zeichen.
 - Jede Funktion und Methode hat einen Docstring und Type Hints.
-- Vor jedem Commit: `ruff check` und `ruff format`.
\ No newline at end of file
+- Vor jedem Commit: `ruff check` und `ruff format`.
+
+## Projektstruktur
+- Quellcode liegt unter "src/matrixmania/", Tests unter "test/test_matrixmania/"
+- Testpakete, Testdateien und Testfunktionen beginnen mit "test_
\ No newline at end of file
diff --git a/opencode.json b/opencode.json
index e69de29..15be39d 100644
--- a/opencode.json
+++ b/opencode.json
@@ -0,0 +1,16 @@
+{
+  "$schema": "https://opencode.ai/config.json",
+  "provider": {
+    "thn": {
+      "npm": "@ai-sdk/openai-compatible",
+      "options": {
+        "baseURL": "http://141.75.33.244:8000/v1",
+        "apiKey": "sk-QXj1p40XOwNSze_5-eYrBzVh3qIgAfqoWPkAjNVqOS8"
+      },
+      "models": {
+        "gpt-oss:20b": { "name": "GPT-OSS 20B" }
+      }
+    }
+  },
+  "model": "thn/gpt-oss:20b"
+}
\ No newline at end of file
diff --git a/src/matrixmania/__init__.py b/src/matrixmania/__init__.py
index e69de29..975a585 100644
--- a/src/matrixmania/__init__.py
+++ b/src/matrixmania/__init__.py
@@ -0,0 +1 @@
+from .compute import matmul, transpose, rot_2D
\ No newline at end of file