From 1d14c2ba40448fd1af0b1c8e56720aa6bde0bfd9 Mon Sep 17 00:00:00 2001
From: Xubin Ren <xubinrencs@gmail.com>
Date: Tue, 12 May 2026 10:04:14 +0000
Subject: [PATCH] fix(config): accept modelPresets root alias

Co-authored-by: Cursor <cursoragent@cursor.com>
---
 nanobot/config/schema.py           |  5 ++++-
 tests/config/test_model_presets.py | 14 ++++++++++++++
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/nanobot/config/schema.py b/nanobot/config/schema.py
index 3d1bb9e0a..43936597b 100644
--- a/nanobot/config/schema.py
+++ b/nanobot/config/schema.py
@@ -274,7 +274,10 @@ class Config(BaseSettings):
     api: ApiConfig = Field(default_factory=ApiConfig)
     gateway: GatewayConfig = Field(default_factory=GatewayConfig)
     tools: ToolsConfig = Field(default_factory=ToolsConfig)
-    model_presets: dict[str, ModelPresetConfig] = Field(default_factory=dict)
+    model_presets: dict[str, ModelPresetConfig] = Field(
+        default_factory=dict,
+        validation_alias=AliasChoices("modelPresets", "model_presets"),
+    )
 
     @model_validator(mode="after")
     def _validate_model_preset(self) -> "Config":
diff --git a/tests/config/test_model_presets.py b/tests/config/test_model_presets.py
index 581202b7b..b243d6e27 100644
--- a/tests/config/test_model_presets.py
+++ b/tests/config/test_model_presets.py
@@ -39,6 +39,20 @@ def test_resolve_preset_returns_active_preset() -> None:
     assert resolved.reasoning_effort == "low"
 
 
+def test_model_presets_accepts_camel_case_root_key() -> None:
+    config = Config.model_validate({
+        "modelPresets": {
+            "fast": {
+                "model": "openai/gpt-4.1",
+                "provider": "openai",
+            }
+        },
+    })
+
+    assert config.model_presets["fast"].model == "openai/gpt-4.1"
+    assert config.model_presets["fast"].provider == "openai"
+
+
 def test_resolve_preset_can_target_named_preset_without_activating() -> None:
     config = Config.model_validate({
         "model_presets": {