diff --git a/src/agent/provider_registry.py b/src/agent/provider_registry.py
index c92480f4..18c4fa74 100644
--- a/src/agent/provider_registry.py
+++ b/src/agent/provider_registry.py
@@ -14,11 +14,6 @@
     "https://api.z.ai/api/anthropic",
     "https://api.z.ai/api/anthropic/v1",
 }
-ZAI_BASE_URL_REQUIRED_HINT = (
-    "Z.AI Base URL is optional. Empty value defaults to "
-    "https://api.z.ai/api/coding/paas/v4 for the GLM Coding Plan; use "
-    "https://api.z.ai/api/paas/v4 only for pay-per-token PaaS access."
-)
 
 
 def is_zai_legacy_anthropic_base_url(base_url: str = "") -> bool:
diff --git a/src/agent/tools/_registry.py b/src/agent/tools/_registry.py
index 14ff6ec9..94f50a0d 100644
--- a/src/agent/tools/_registry.py
+++ b/src/agent/tools/_registry.py
@@ -208,15 +208,6 @@ def arg_csv_ints(
     return result
 
 
-def require_args(args: dict[str, Any], *names: str) -> dict[str, str]:
-    values = {name: arg_str(args, name) for name in names}
-    missing = [name for name, value in values.items() if not value]
-    if missing:
-        joined = ", ".join(missing)
-        raise ToolInputError(f"{joined} обязательны.")
-    return values
-
-
 def normalize_phone(phone: object) -> str:
     """Ensure phone starts with '+' — models sometimes omit it."""
     if phone is None: