change

backend/app/settings.py

@@ -17,6 +17,9 @@ load_dotenv(BACKEND_ROOT / ".env")
 class ProviderModel:
     id: str
     vision: bool = False
+    # Strict function schemas are provider/model capabilities, not an
+    # assumption about every OpenAI-compatible endpoint.
+    strict_tool_schema: bool = False
 
 
 @dataclass(frozen=True)
@@ -67,10 +70,28 @@ class Settings:
         return provider, model
 
 
-def _models(value: str, vision_value: str = "") -> tuple[ProviderModel, ...]:
+def _enabled_model_ids(value: str) -> set[str]:
+    return {item.strip() for item in value.split(",") if item.strip()}
+
+
+def _as_bool(value: str) -> bool:
+    return value.strip().lower() in {"1", "true", "yes", "on"}
+
+
+def _models(
+    value: str,
+    vision_value: str = "",
+    strict_value: str = "",
+    strict_all: bool = False,
+) -> tuple[ProviderModel, ...]:
     vision_ids = {item.strip() for item in vision_value.split(",") if item.strip()}
+    strict_ids = _enabled_model_ids(strict_value)
     return tuple(
-        ProviderModel(id=item, vision=item in vision_ids)
+        ProviderModel(
+            id=item,
+            vision=item in vision_ids,
+            strict_tool_schema=strict_all or item in strict_ids,
+        )
         for item in (part.strip() for part in value.split(","))
         if item
     )
@@ -84,7 +105,17 @@ def _provider(prefix: str, provider_id: str, label: str, default_base_url: str,
     api_key = os.getenv(f"CDSL_{prefix}_API_KEY", os.getenv("CDSL_LLM_API_KEY", "") if legacy else "")
     model_list = os.getenv(f"CDSL_{prefix}_MODELS", os.getenv("CDSL_LLM_MODEL", default_model) if legacy else default_model)
     vision_models = os.getenv(f"CDSL_{prefix}_VISION_MODELS", "")
-    return ProviderConfig(provider_id, label, base_url, api_key, _models(model_list, vision_models))
+    # A provider-wide switch is convenient for a verified endpoint. The model
+    # list lets mixed capability deployments opt in only selected models.
+    strict_all = _as_bool(os.getenv(f"CDSL_{prefix}_STRICT_TOOL_SCHEMA", ""))
+    strict_models = os.getenv(f"CDSL_{prefix}_STRICT_TOOL_MODELS", "")
+    return ProviderConfig(
+        provider_id,
+        label,
+        base_url,
+        api_key,
+        _models(model_list, vision_models, strict_models, strict_all),
+    )
 
 
 def get_settings() -> Settings: