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from abc import ABC, abstractmethod
from dataclasses import dataclass
@dataclass
class ToolResult:
content: str
class Tool(ABC):
@property
@abstractmethod
def name(self) -> str: ...
@property
@abstractmethod
def description(self) -> str: ...
@property
@abstractmethod
def schema(self) -> dict[str, object]: ...
@abstractmethod
def execute(self, arguments: dict[str, object]) -> ToolResult: ...
class ToolRegistry:
def __init__(self) -> None:
self.tools: dict[str, Tool] = {}
def register(self, tool: Tool) -> None:
self.tools[tool.name] = tool
def get(self, name: str) -> Tool | None:
return self.tools.get(name)
def all(self) -> list[Tool]:
return list(self.tools.values())
def schemas(self) -> list[dict[str, object]]:
return [
{
"type": "function",
"function": {
"name": tool.name,
"description": tool.description,
"parameters": tool.schema,
},
}
for tool in self.tools.values()
]
class HelloTool(Tool):
@property
def name(self) -> str:
return "hello"
@property
def description(self) -> str:
return "Say hello to someone."
@property
def schema(self) -> dict[str, object]:
return {
"type": "object",
"properties": {
"name": {
"type": "string",
"description": "The person to greet.",
},
},
"required": ["name"],
}
def execute(self, arguments: dict[str, object]) -> ToolResult:
name = arguments.get("name", "stranger")
return ToolResult(content=f"Hello, {name}!")
class CalculatorTool(Tool):
@property
def name(self) -> str:
return "calculator"
@property
def description(self) -> str:
return "Perform basic arithemtic"
@property
def schema(self) -> dict[str, object]:
return {
"type": "object",
"properties": {
"a": {
"type": "number",
"description": "The first number.",
},
"b": {
"type": "number",
"description": "The second number.",
},
"operation": {
"type": "string",
"enum": ["add", "subtract", "multiply", "divide"],
"description": "The arithemtic operation to perform",
},
},
"required": ["a", "b", "operation"],
}
def execute(self, arguments: dict[str, object]) -> ToolResult:
a = arguments["a"]
b = arguments["b"]
operation = arguments["operation"]
if not isinstance(a, (int, float)):
raise TypeError("a must be a number")
if not isinstance(b, (int, float)):
raise TypeError("b must be a number")
if not isinstance(operation, str):
raise TypeError("operation must be a string")
if operation == "add":
result = a + b
elif operation == "subtract":
result = a - b
elif operation == "multiply":
result = a * b
elif operation == "divide":
if b == 0:
raise ValueError("cannot divide by zero")
result = a / b
else:
raise ValueError(f"unknown operation: {operation}")
return ToolResult(content=str(result))
if __name__ == "__main__":
registry = ToolRegistry()
registry.register(HelloTool())
print(registry.schemas())
tool = registry.get("hello")
if tool is not None:
result = tool.execute({"name": "Joseph"})
print(result.content)
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