diff --git a/ansible/roles/rag/files/rag-ingest b/ansible/roles/rag/files/rag-ingest
index 8c5e4e3..10a102a 100644
--- a/ansible/roles/rag/files/rag-ingest
+++ b/ansible/roles/rag/files/rag-ingest
@@ -19,6 +19,13 @@ COLLECTION  = os.environ.get("RAG_COLLECTION", "funk-docs")
 VECTOR_DIM  = 4096
 CHUNK_MAX   = 2000
 
+# Dossiers (relatifs à docs_dir) exclus de l'index : rapports auto-générés par
+# hermes-auto-improve (méta-commentaires sur la doc, pas de la connaissance) — ils
+# noyaient la vraie doc (~84% des points). Surchargeable via RAG_EXCLUDE (séparé par ":").
+EXCLUDE_DIRS = [
+    p for p in os.environ.get("RAG_EXCLUDE", "hermes/builtin").split(":") if p
+]
+
 
 def _request(method, url, data=None):
     body = json.dumps(data).encode() if data is not None else None
@@ -95,9 +102,15 @@ def point_id(file_path, section):
 def ingest(docs_dir):
     ensure_collection()
 
+    excluded = {os.path.normpath(os.path.join(docs_dir, p)) for p in EXCLUDE_DIRS}
     md_files = []
     for root, dirs, files in os.walk(docs_dir):
-        dirs[:] = sorted(d for d in dirs if not d.startswith('.'))
+        # élague les dossiers cachés et exclus (ex. hermes/builtin)
+        dirs[:] = sorted(
+            d for d in dirs
+            if not d.startswith('.')
+            and os.path.normpath(os.path.join(root, d)) not in excluded
+        )
         for f in sorted(files):
             if f.endswith('.md'):
                 md_files.append(os.path.join(root, f))