Chen
997b51102b
* fix: 修复5081号PR在子代理执行后台任务时,未正确使用系统配置的流式/非流请求的问题(#5081) * feat:为子代理增加远程图片URL参数支持 * fix: update description for image_urls parameter in HandoffTool to clarify usage in multimodal tasks * ruff format --------- Co-authored-by: Soulter <905617992@qq.com>
66 lines
2.7 KiB
Python
66 lines
2.7 KiB
Python
from typing import Generic
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from .agent import Agent
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from .run_context import TContext
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from .tool import FunctionTool
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class HandoffTool(FunctionTool, Generic[TContext]):
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"""Handoff tool for delegating tasks to another agent."""
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def __init__(
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self,
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agent: Agent[TContext],
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parameters: dict | None = None,
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tool_description: str | None = None,
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**kwargs,
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) -> None:
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# Avoid passing duplicate `description` to the FunctionTool dataclass.
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# Some call sites (e.g. SubAgentOrchestrator) pass `description` via kwargs
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# to override what the main agent sees, while we also compute a default
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# description here.
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# `tool_description` is the public description shown to the main LLM.
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# Keep a separate kwarg to avoid conflicting with FunctionTool's `description`.
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description = tool_description or self.default_description(agent.name)
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super().__init__(
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name=f"transfer_to_{agent.name}",
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parameters=parameters or self.default_parameters(),
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description=description,
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**kwargs,
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)
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# Optional provider override for this subagent. When set, the handoff
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# execution will use this chat provider id instead of the global/default.
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self.provider_id: str | None = None
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# Note: Must assign after super().__init__() to prevent parent class from overriding this attribute
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self.agent = agent
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def default_parameters(self) -> dict:
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return {
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"type": "object",
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"properties": {
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"input": {
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"type": "string",
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"description": "The input to be handed off to another agent. This should be a clear and concise request or task.",
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},
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"image_urls": {
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"type": "array",
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"items": {"type": "string"},
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"description": "Optional: An array of image sources (public HTTP URLs or local file paths) used as references in multimodal tasks such as video generation.",
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},
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"background_task": {
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"type": "boolean",
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"description": (
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"Defaults to false. "
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"Set to true if the task may take noticeable time, involves external tools, or the user does not need to wait. "
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"Use false only for quick, immediate tasks."
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),
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},
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},
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}
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def default_description(self, agent_name: str | None) -> str:
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agent_name = agent_name or "another"
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return f"Delegate tasks to {self.name} agent to handle the request."
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