bit of docs

Author: dsfaccini

docs/ui/web.md

@@ -66,7 +66,7 @@ agent = Agent('openai:gpt-5')
 def get_weather(city: str) -> str:
     return f'The weather in {city} is sunny'
 
-# Create app with model names (display names auto-generated)
+# Create app with model names (their display names are auto-generated)
 app = agent.to_web(
     models=['openai:gpt-5', 'anthropic:claude-sonnet-4-5'],
     builtin_tools=[WebSearchTool()],

pydantic_ai_slim/pydantic_ai/ui/_web/api.py

@@ -49,7 +49,9 @@ class _ChatRequestExtra(BaseModel, extra='ignore', alias_generator=to_camel):
     """Extra data extracted from chat request."""
 
     model: str | None = None
+    """Model ID selected by the user, e.g. 'openai:gpt-5'. Maps to JSON field 'model'."""
     builtin_tools: list[str] = []
+    """Tool IDs selected by the user, e.g. ['web_search', 'code_execution']. Maps to JSON field 'builtinTools'."""
 
 
 def add_api_routes(
@@ -80,7 +82,7 @@ async def configure_frontend(request: Request) -> Response:
         """Endpoint to configure the frontend with available models and tools."""
         config = _ConfigureFrontend(
             models=_models,
-            builtin_tools=[BuiltinToolInfo(id=tool.kind, name=tool.label) for tool in _builtin_tools],
+            builtin_tools=[BuiltinToolInfo(id=tool.unique_id, name=tool.label) for tool in _builtin_tools],
         )
         return JSONResponse(config.model_dump(by_alias=True))