In v1, when setting args_schema, the runtime field does not get injected. Is this an intended behavior or a potential bug?

Should be fixed w/ latest core and prebuilt :slight_smile:

Hi, could you please share an example? Thanks!

Hi @zhanghaili and @sydney-runkle I’ve been experimenting with the args_schema and this is my observation: 1) Works: no args_schema, runtime injected from signature from dotenv import load_dotenv from langchain_anthropic import ChatAnthropic from langchain_core.tools import tool from langchain.too…

Thanks for pointing that out, I’m in scenario 3! :folded_hands:

Hi @TheSecondStep Thank you for your message. Could you please create separate post for this? And it would be easier to get helped when you format post correctly - right now it is so hard to read and understand.

Hi, This is the new post link： [image] Warning after resolving args_schema and ToolRuntime conflict LangChain I recently followed the community advice to resolve the conflict between args_schema and ToolRuntime by adding a runtime: ToolRuntime field to my Pydan…

hi @zhanghaili I think because of the further messages, this post is no longer marked as solved. Could you mark it again please? :slight_smile:

@tool `args_schema` conflicts with `runtime`

OSS Product Help LangChain

TheSecondStep October 22, 2025, 8:56am 7

Hi, This is the new post link：

Topic		Replies	Views
How to use ToolRuntime in arg_schema for a tool LangGraph python-help	1	163	December 18, 2025
Warning after resolving args_schema and ToolRuntime conflict LangChain python-help	2	805	October 22, 2025
Cannot access ToolRuntime in BaseTool subclass LangChain python-help	1	136	January 2, 2026
How to access tool call id using runtime LangChain python-help	2	575	November 11, 2025
How to use InjectedToolArg in AgentExecutor LangChain python-help	7	811	January 19, 2026

@tool `args_schema` conflicts with `runtime`

Related topics