diff --git a/.mcp.json b/.mcp.json
deleted file mode 100644
index b38c21d..0000000
--- a/.mcp.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "mcpServers": {
-    "code-review-graph": {
-      "command": "uvx",
-      "args": ["code-review-graph", "serve"]
-    }
-  }
-}
diff --git a/hooks/hooks.json b/hooks/hooks.json
index 6ea91e7..4ee8137 100644
--- a/hooks/hooks.json
+++ b/hooks/hooks.json
@@ -1,5 +1,5 @@
 {
-  "_comment": "PostEdit and PostGit are custom Claude Code hook events (confirmed working as of v1.6.4).",
+  "_comment": "Auto-update knowledge graph after file edits and git commits via PostToolUse hooks.",
   "hooks": {
     "SessionStart": [
       {
@@ -11,7 +11,7 @@
         ]
       }
     ],
-    "PostEdit": [
+    "PostToolUse": [
       {
         "matcher": "Write|Edit",
         "hooks": [
@@ -20,11 +20,9 @@
             "command": "code-review-graph update 2>/dev/null || true"
           }
         ]
-      }
-    ],
-    "PostGit": [
+      },
       {
-        "matcher": "commit",
+        "matcher": "Bash",
         "hooks": [
           {
             "type": "command",