diff --git a/agents/bugfixer.md b/agents/bugfixer.md
index 283013d..f07dff5 100644
--- a/agents/bugfixer.md
+++ b/agents/bugfixer.md
@@ -180,8 +180,6 @@ Apply the fix following the plan:
 
    <what was wrong and why>
    <what the fix does>
-
-   Co-Authored-By: Claude <noreply@anthropic.com>
    ```
 7. Print summary:
    ```
diff --git a/agents/feater.md b/agents/feater.md
index c02aeba..0faea7f 100644
--- a/agents/feater.md
+++ b/agents/feater.md
@@ -138,8 +138,6 @@ Commit using conventional format:
 feat(<scope>): <what was added>
 
 <brief description of the feature>
-
-Co-Authored-By: Claude <noreply@anthropic.com>
 ```
 
 If the feature touched multiple concerns (e.g., feature + config +
diff --git a/agents/hotfixer.md b/agents/hotfixer.md
index 20925f0..0db2d15 100644
--- a/agents/hotfixer.md
+++ b/agents/hotfixer.md
@@ -132,8 +132,6 @@ Apply the minimal change that fixes the bug:
 4. Commit using conventional format (only after verify AND security pass):
    ```
    fix(<scope>): <what was wrong>
-
-   Co-Authored-By: Claude <noreply@anthropic.com>
    ```
 5. Print summary:
    ```