diff --git a/.changeset/explicit-config-hook.md b/.changeset/explicit-config-hook.md
new file mode 100644
index 0000000..c6f02ef
--- /dev/null
+++ b/.changeset/explicit-config-hook.md
@@ -0,0 +1,5 @@
+---
+"@systemfsoftware/claude-code-comment-checker": patch
+---
+
+The `PostToolUse` hook command now invokes `deno run --config <plugin>/hooks/deno.jsonc … <plugin>/hooks/run.ts` explicitly. The config file is what makes Deno treat the hook as a first-class module instead of node-compat material: without it, a hook living under `node_modules` (as an installed plugin does) cannot resolve `@std/*` or `arktype` and never reaches the checker. Passing the config restores the TypeScript source (`run.ts`) with its real imports, replacing the compiled `run.js` shipped in 0.3.1.
\ No newline at end of file
diff --git a/hooks/deno.jsonc b/hooks/deno.jsonc
index 27661b1..a8eaf7c 100644
--- a/hooks/deno.jsonc
+++ b/hooks/deno.jsonc
@@ -1,8 +1,5 @@
 {
   "lock": "./deno.lock",
-  "compilerOptions": {
-    "checkJs": true
-  },
   "imports": {
     "@std/fs": "jsr:@std/fs@1.0.19",
     "@std/io": "jsr:@std/io@0.225.2",
diff --git a/hooks/hooks.json b/hooks/hooks.json
index 87cb7ee..5dc3949 100644
--- a/hooks/hooks.json
+++ b/hooks/hooks.json
@@ -5,10 +5,10 @@
       "hooks": [
         {
           "type": "command",
-          "command": "\"${CLAUDE_PLUGIN_ROOT}/hooks/run.js\"",
+          "command": "deno run --config \"${CLAUDE_PLUGIN_ROOT}/hooks/deno.jsonc\" --allow-read --allow-run=comment-checker,direnv --allow-env=CLAUDE_PROJECT_DIR,PATH,HOME \"${CLAUDE_PLUGIN_ROOT}/hooks/run.ts\"",
           "timeout": 30
         }
       ]
     }
   ]
-}
+}
\ No newline at end of file
diff --git a/hooks/run.js b/hooks/run.ts
old mode 100755
new mode 100644
similarity index 93%
rename from hooks/run.js
rename to hooks/run.ts
index 32cbb97..58f40c3
--- a/hooks/run.js
+++ b/hooks/run.ts
@@ -21,11 +21,7 @@ if (env instanceof type.errors) {
   Deno.exit(1)
 }
 
-/** @param {string} cmd
- * @param {string[]} args
- * @returns {Promise<number | undefined>}
- */
-async function run(cmd, args) {
+async function run(cmd: string, args: string[]): Promise<number | undefined> {
   try {
     const { code } = await new Deno.Command(cmd, {
       args,