3.3: Modify Agent and ToolRegistry for multi-agent

Agent changes:
- Accept optional AgentConfig in __init__
- Add name property
- Filter tools via agent_config.tools whitelist in respond()
- Use agent-specific personality file when configured
- Pass agent name to skills registry for filtering

ToolRegistry changes:
- get_tools_schema() accepts filter_names parameter
- get_tools_description() accepts filter_names parameter
- When filter_names is None, all tools are returned (backward compat)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

cheddahbot/agent.py

@@ -9,7 +9,7 @@ import uuid
 from collections.abc import Generator
 from pathlib import Path
 
-from .config import Config
+from .config import AgentConfig, Config
 from .db import Database
 from .llm import LLMAdapter
 from .router import build_system_prompt, format_messages_for_llm
@@ -63,15 +63,26 @@ def _build_file_content_parts(files: list[str]) -> list[dict]:
 
 
 class Agent:
-    def __init__(self, config: Config, db: Database, llm: LLMAdapter):
+    def __init__(
+        self,
+        config: Config,
+        db: Database,
+        llm: LLMAdapter,
+        agent_config: AgentConfig | None = None,
+    ):
         self.config = config
         self.db = db
         self.llm = llm
+        self.agent_config = agent_config or AgentConfig()
         self.conv_id: str | None = None
         self._memory = None  # set by app after memory system init
         self._tools = None  # set by app after tool system init
         self._skills_registry = None  # set by app after skills init
 
+    @property
+    def name(self) -> str:
+        return self.agent_config.name
+
     def set_memory(self, memory):
         self._memory = memory
 
@@ -104,18 +115,29 @@ class Agent:
         if self._memory:
             memory_context = self._memory.get_context(user_input)
 
+        # Apply tool whitelist from agent config
+        tool_filter = self.agent_config.tools
+
         tools_schema = []
         tools_description = ""
         if self._tools:
-            tools_schema = self._tools.get_tools_schema()
-            tools_description = self._tools.get_tools_description()
+            tools_schema = self._tools.get_tools_schema(filter_names=tool_filter)
+            tools_description = self._tools.get_tools_description(filter_names=tool_filter)
 
         skills_context = ""
         if self._skills_registry:
-            skills_context = self._skills_registry.get_prompt_section()
+            skills_context = self._skills_registry.get_prompt_section(self.name)
+
+        # Use agent-specific personality file if configured
+        identity_dir = self.config.identity_dir
+        personality_file = self.agent_config.personality_file
+        if personality_file:
+            pf = Path(personality_file)
+            if pf.exists():
+                identity_dir = pf.parent
 
         system_prompt = build_system_prompt(
-            identity_dir=self.config.identity_dir,
+            identity_dir=identity_dir,
             memory_context=memory_context,
             tools_description=tools_description,
             skills_context=skills_context,

cheddahbot/tools/__init__.py

@@ -118,15 +118,20 @@ class ToolRegistry:
             except Exception as e:
                 log.warning("Failed to load tool module %s: %s", module_name, e)
 
-    def get_tools_schema(self) -> list[dict]:
-        """Get all tools in OpenAI function-calling format."""
-        return [t.to_openai_schema() for t in _TOOLS.values()]
+    def get_tools_schema(self, filter_names: list[str] | None = None) -> list[dict]:
+        """Get tools in OpenAI function-calling format, optionally filtered."""
+        tools = _TOOLS.values()
+        if filter_names is not None:
+            tools = [t for t in tools if t.name in filter_names]
+        return [t.to_openai_schema() for t in tools]
 
-    def get_tools_description(self) -> str:
-        """Human-readable tool list for system prompt."""
+    def get_tools_description(self, filter_names: list[str] | None = None) -> str:
+        """Human-readable tool list for system prompt, optionally filtered."""
         lines = []
         by_cat: dict[str, list[ToolDef]] = {}
         for t in _TOOLS.values():
+            if filter_names is not None and t.name not in filter_names:
+                continue
             by_cat.setdefault(t.category, []).append(t)
 
         for cat, tools in sorted(by_cat.items()):