feat: Use ToolRegistry in AgentConfig

Author: Unshure

pyproject.toml

@@ -134,6 +134,7 @@ dependencies = [
     "pytest-asyncio>=1.0.0,<1.3.0",
     "pytest-xdist>=3.0.0,<4.0.0",
     "moto>=5.1.0,<6.0.0",
+    "strands-agents-tools>=0.2.0,<1.0.0",
 ]
 
 [[tool.hatch.envs.hatch-test.matrix]]

src/strands/experimental/__init__.py

@@ -4,6 +4,5 @@
 """
 
 from .agent_config import AgentConfig
-from .tool_box import ToolBox
 
-__all__ = ["AgentConfig", "ToolBox"]
+__all__ = ["AgentConfig"]

src/strands/experimental/agent_config.py

@@ -1,17 +1,17 @@
 """Experimental agent configuration with enhanced instantiation patterns."""
 
-import json
 import importlib
-from typing import TYPE_CHECKING
+import json
+from typing import TYPE_CHECKING, Any
+
+from ..tools.registry import ToolRegistry
 
 if TYPE_CHECKING:
     # Import here to avoid circular imports:
-    # experimental/agent_config.py -> agent.agent -> event_loop.event_loop -> 
+    # experimental/agent_config.py -> agent.agent -> event_loop.event_loop ->
     # experimental.hooks -> experimental.__init__.py -> AgentConfig
     from ..agent.agent import Agent
 
-from .tool_box import ToolBox
-
 # File prefix for configuration file paths
 FILE_PREFIX = "file://"
 
@@ -21,170 +21,173 @@
 
 
 class AgentConfig:
-    """Agent configuration with to_agent() method and ToolBox integration.
-    
+    """Agent configuration with to_agent() method and ToolRegistry integration.
+
     Example config.json:
     {
         "model": "anthropic.claude-3-5-sonnet-20241022-v2:0",
         "prompt": "You are a helpful assistant",
         "tools": ["file_read", "editor"]
     }
     """
-    
-    def __init__(self, config_source: str | dict[str, any], tool_box: ToolBox | None = None, raise_exception_on_missing_tool: bool = True):
+
+    def __init__(
+        self,
+        config_source: str | dict[str, Any],
+        tool_registry: ToolRegistry | None = None,
+        raise_exception_on_missing_tool: bool = True,
+    ):
         """Initialize AgentConfig from file path or dictionary.
-        
+
         Args:
             config_source: Path to JSON config file (must start with 'file://') or config dictionary
-            tool_box: Optional ToolBox to select tools from when 'tools' is specified in config
+            tool_registry: Optional ToolRegistry to select tools from when 'tools' is specified in config
             raise_exception_on_missing_tool: If False, skip missing tools instead of raising ImportError
-            
+
         Example:
             # Dictionary config
             config = AgentConfig({
                 "model": "anthropic.claude-3-5-sonnet-20241022-v2:0",
                 "prompt": "You are a helpful assistant",
                 "tools": ["file_read", "editor"]
             })
-            
+
             # File config
             config = AgentConfig("file://config.json")
         """
         if isinstance(config_source, str):
             # Require file:// prefix for file paths
             if not config_source.startswith(FILE_PREFIX):
                 raise ValueError(f"File paths must be prefixed with '{FILE_PREFIX}'")
-            
+
             # Remove file:// prefix and load from file
             file_path = config_source.removeprefix(FILE_PREFIX)
-            with open(file_path, 'r') as f:
+            with open(file_path, "r") as f:
                 config_data = json.load(f)
         else:
             # Use dictionary directly
             config_data = config_source
-        
-        self.model = config_data.get('model')
-        self.system_prompt = config_data.get('prompt')  # Only accept 'prompt' key
+
+        self.model = config_data.get("model")
+        self.system_prompt = config_data.get("prompt")  # Only accept 'prompt' key
         self._raise_exception_on_missing_tool = raise_exception_on_missing_tool
-        
-        # Handle tool selection from ToolBox
-        if tool_box is not None:
-            self._toolbox = tool_box
+
+        # Handle tool selection from ToolRegistry
+        if tool_registry is not None:
+            self._tool_registry = tool_registry
         else:
-            # Create default ToolBox with strands_tools
-            self._toolbox = self._create_default_toolbox()
-        
+            # Create default ToolRegistry with strands_tools
+            self._tool_registry = self._create_default_tool_registry()
+
         # Process tools configuration if provided
-        config_tools = config_data.get('tools')
-        
+        config_tools = config_data.get("tools")
+
         # Track configured tools separately from full tool pool
         self._configured_tools = []
-            
+
         # Apply tool selection if specified
         if config_tools is not None:
-            # Validate all tool names exist in the ToolBox
-            available_tools = self._toolbox.list_tool_names()
-            
-missing_tools = set(config_tools).difference(set(available_tools))
-    if missing_tools and self._raise_exception_on_missing_tool:
-        raise ValueError(f"Tool(s) '{missing_tools}' not found in ToolBox. Available tools: {available_tools}")
-            
-            # Store selected tools from the ToolBox (only ones that exist)
-            all_tools = self._toolbox.list_tools()
-            for tool in all_tools:
-                if tool.tool_name in config_tools:
+            # Validate all tool names exist in the ToolRegistry
+            available_tools = self._tool_registry.registry.keys()
+
+            missing_tools = set(config_tools).difference(available_tools)
+            if missing_tools and self._raise_exception_on_missing_tool:
+                raise ValueError(
+                    f"Tool(s) '{missing_tools}' not found in ToolRegistry. Available tools: {available_tools}"
+                )
+
+            for tool_name in config_tools:
+                if tool_name in self._tool_registry.registry:
+                    tool = self._tool_registry.registry[tool_name]
                     self._configured_tools.append(tool)
         # If no tools specified in config, use no tools (empty list)
-    
-    def _create_default_toolbox(self) -> ToolBox:
-        """Create default ToolBox with strands_tools."""
-        pool = ToolBox()
-        
-        for tool in DEFAULT_TOOLS:
-            try:
-                module_name = f"strands_tools.{tool}"
-                tool_module = importlib.import_module(module_name)
-                pool.add_tools_from_module(tool_module)
-            except ImportError:
-                if self._raise_exception_on_missing_tool:
-                    raise ImportError(
-                        f"strands_tools is not available and no ToolBox was specified. "
-                        f"Either install strands_tools with 'pip install strands-agents-tools' "
-                        f"or provide your own ToolBox with your own tools."
-                    )
-                # Skip missing tools when flag is False
-                continue
-        
-        return pool
-    
+
+    def _create_default_tool_registry(self) -> ToolRegistry:
+        """Create default ToolRegistry with strands_tools."""
+        tool_registry = ToolRegistry()
+
+        try:
+            tool_modules = [importlib.import_module(f"strands_tools.{tool}") for tool in DEFAULT_TOOLS]
+            tool_registry.process_tools(tool_modules)
+        except ImportError as e:
+            if self._raise_exception_on_missing_tool:
+                raise ImportError(
+                    "strands_tools is not available and no ToolRegistry was specified. "
+                    "Either install strands_tools with 'pip install strands-agents-tools' "
+                    "or provide your own ToolRegistry with your own tools."
+                ) from e
+
+        return tool_registry
+
     @property
-    def toolbox(self) -> ToolBox:
-        """Get the full ToolBox (superset of all available tools).
-        
+    def tool_registry(self) -> ToolRegistry:
+        """Get the full ToolRegistry (superset of all available tools).
+
         Returns:
-            ToolBox instance containing all available tools
+            ToolRegistry instance containing all available tools
         """
-        return self._toolbox
-    
+        return self._tool_registry
+
     @property
     def configured_tools(self) -> list:
         """Get the configured tools (subset selected for this agent).
-        
+
         Returns:
             List of tools configured for this agent
         """
         return self._configured_tools
-    
-    def to_agent(self, **kwargs: any) -> "Agent":
+
+    def to_agent(self, **kwargs: Any) -> "Agent":
         """Create an Agent instance from this configuration.
-        
+
         Args:
             **kwargs: Additional parameters to override config values.
                      Supports all Agent constructor parameters.
-            
+
         Returns:
             Configured Agent instance
-            
+
         Example:
             # Using default tools from strands_tools
             config = AgentConfig({
-                "model": "anthropic.claude-3-5-sonnet-20241022-v2:0", 
+                "model": "anthropic.claude-3-5-sonnet-20241022-v2:0",
                 "prompt": "You are a helpful assistant",
                 "tools": ["file_read"]
             })
             agent = config.to_agent()
             response = agent("Read the contents of README.md")
-            
-            # Using custom ToolBox
+
+            # Using custom ToolRegistry
             from strands import tool
-            
+
             @tool
             def custom_tool(input: str) -> str:
                 return f"Custom: {input}"
-                
-            custom_toolbox = ToolBox([custom_tool])
+
+            custom_tool_registry = ToolRegistry()
+            custom_tool_registry.process_tools([custom_tool])
             config = AgentConfig({
                 "model": "anthropic.claude-3-5-sonnet-20241022-v2:0",
                 "prompt": "You are a custom assistant",
                 "tools": ["custom_tool"]
-            }, tool_box=custom_toolbox)
+            }, tool_registry=custom_tool_registry)
             agent = config.to_agent()
         """
         # Import at runtime since TYPE_CHECKING import is not available during execution
         from ..agent.agent import Agent
-        
+
         # Start with config values
         agent_params = {}
-        
+
         if self.model is not None:
-            agent_params['model'] = self.model
+            agent_params["model"] = self.model
         if self.system_prompt is not None:
-            agent_params['system_prompt'] = self.system_prompt
-            
+            agent_params["system_prompt"] = self.system_prompt
+
         # Use configured tools (subset of tool pool)
-        agent_params['tools'] = self._configured_tools
-        
+        agent_params["tools"] = self._configured_tools
+
         # Override with any other provided kwargs
         agent_params.update(kwargs)
-        
+
         return Agent(**agent_params)