Fix ui instructions

libs/agent/README.md

@@ -83,12 +83,34 @@ pip install "cua-agent[ui]"
 
 # Create a simple launcher script
 ```python
+# launch_ui.py
 from agent.ui.gradio.app import create_gradio_ui
 
 app = create_gradio_ui()
 app.launch(share=False)
 ```
 
+# Run the launcher
+python launch_ui.py
+```
+
+### Setting up API Keys
+
+For the Gradio UI to show available models, you need to set API keys as environment variables:
+
+```bash
+# For OpenAI models
+export OPENAI_API_KEY=your_openai_key_here
+
+# For Anthropic models
+export ANTHROPIC_API_KEY=your_anthropic_key_here
+
+# Launch with both keys set
+OPENAI_API_KEY=your_key ANTHROPIC_API_KEY=your_key python launch_ui.py
+```
+
+Without these environment variables, the UI will show "No models available" for the corresponding providers, but you can still use local models with the OMNI loop provider.
+
 The Gradio UI provides:
 - Selection of different agent loops (OpenAI, Anthropic, OMNI)
 - Model selection for each provider

libs/agent/agent/core/types.py

@@ -54,23 +54,6 @@ LLMModel = LLM
 Model = LLM
 
 
-# Default models for each provider
-PROVIDER_TO_DEFAULT_MODEL: Dict[LLMProvider, str] = {
-    LLMProvider.ANTHROPIC: "claude-3-7-sonnet-20250219",
-    LLMProvider.OPENAI: "gpt-4o",
-    LLMProvider.OLLAMA: "gemma3:4b-it-q4_K_M",
-    LLMProvider.OAICOMPAT: "Qwen2.5-VL-7B-Instruct",
-}
-
-# Environment variable names for each provider
-PROVIDER_TO_ENV_VAR: Dict[LLMProvider, str] = {
-    LLMProvider.ANTHROPIC: "ANTHROPIC_API_KEY",
-    LLMProvider.OPENAI: "OPENAI_API_KEY",
-    LLMProvider.OLLAMA: "none",
-    LLMProvider.OAICOMPAT: "none",
-}
-
-
 class AgentResponse(TypedDict, total=False):
     """Agent response format."""