diff --git a/scripts/eval.py b/scripts/eval.py
index 8742d42..12f84c0 100644
--- a/scripts/eval.py
+++ b/scripts/eval.py
@@ -25,6 +25,7 @@
 
 SKILL_NAME = os.environ["SKILL_NAME"]
 SKILL_PATH = Path(os.environ["SKILL_PATH"])
+PLUGIN_ROOT = SKILL_PATH.resolve().parent.parent
 WORKSPACE = Path(os.environ["WORKSPACE"])
 EVAL_TIMEOUT = int(os.environ.get("EVAL_TIMEOUT", "120"))
 PASS_THRESHOLD = float(os.environ.get("PASS_THRESHOLD", "80"))
@@ -200,7 +201,7 @@ def _run_claude(prompt: str, work_dir: Path, timeout: int) -> subprocess.Complet
     for attempt in range(1, MAX_RETRIES + 1):
         try:
             result = subprocess.run(
-                ["claude", "-p", prompt, "--output-format", "stream-json", "--verbose"],
+                ["claude", "-p", prompt, "--add-dir", str(PLUGIN_ROOT), "--output-format", "stream-json", "--verbose"],
                 capture_output=True, text=True,
                 timeout=timeout, cwd=str(work_dir), env=env,
             )