# Initial registration — looks fine
tools = [
    {
        "name": "search_entities",
        "description": "Search the entity registry by name. Returns a list of matching entities.",
        "input_schema": {
            "type": "object",
            "properties": {
                "query": {"type": "string", "description": "Search term"}
            },
            "required": ["query"]
        }
    }
]