Checked other resources

• This is a bug, not a usage question.
• I added a clear and descriptive title that summarizes this issue.
• I used the GitHub search to find a similar question and didn't find it.
• I am sure that this is a bug in LangChain rather than my code.
• The bug is not resolved by updating to the latest stable version of LangChain (or the specific integration package).
• This is not related to the langchain-community package.
• I posted a self-contained, minimal, reproducible example. A maintainer can copy it and run it AS IS.

Package (Required)

• langchain
• langchain-openai
• langchain-anthropic
• langchain-classic
• langchain-core
• langchain-model-profiles
• langchain-tests
• langchain-text-splitters
• langchain-chroma
• langchain-deepseek
• langchain-exa
• langchain-fireworks
• langchain-groq
• langchain-huggingface
• langchain-mistralai
• langchain-nomic
• langchain-ollama
• langchain-perplexity
• langchain-prompty
• langchain-qdrant
• langchain-xai
• Other / not sure / general

Reproduction Steps / Example Code (Python)

from langchain_xai import ChatXAI

model = ChatXAI(
    model="grok-4",
    search_parameters={
        "mode": "auto",
        # Example optional parameters below:
        "max_search_results": 3,
        "from_date": "2025-05-26",
        "to_date": "2025-05-27",
    },
)

model.invoke("Provide me a digest of world news in the last 24 hours.")

Error Message and Stack Trace (if applicable)

{'error': 'Live search is deprecated. Please switch to the Agent Tools API: https://docs.x.ai/docs/guides/tools/overview'}

Description

i try to call:
from langchain_xai import ChatXAI

model = ChatXAI(
model="grok-4",
search_parameters={
"mode": "auto",
# Example optional parameters below:
"max_search_results": 3,
"from_date": "2025-05-26",
"to_date": "2025-05-27",
},
)

model.invoke("Provide me a digest of world news in the last 24 hours.")

===> {'error': 'Live search is deprecated. Please switch to the Agent Tools API: https://docs.x.ai/docs/guides/tools/overview'}

System Info

langchain-xai 1.2.1