Error PydanticInvalidForJsonSchema while using ChatOCIGenAI with Langchaing 1.0 deepagent

[avianabr]

I got the following error while trying to use ChatOCIGentAI with langchain 1.0 deepagent

Exception has occurred: PydanticInvalidForJsonSchema
Cannot generate a JsonSchema for core_schema.CallableSchema

For further information visit https://errors.pydantic.dev/2.12/u/invalid-for-json-schema
File "C:\Users\opc\langgraph-test\src\agent\graph.py", line 24, in
result = agent.invoke({"messages": [{"role": "human", "content": "Tell me a joke about oracle stock price"}]})
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
pydantic.errors.PydanticInvalidForJsonSchema: Cannot generate a JsonSchema for core_schema.CallableSchema

For further information visit https://errors.pydantic.dev/2.12/u/invalid-for-json-schema

code to reproduce the error

from typing import Literal
from deepagents import create_deep_agent
from langchain_oci import ChatOCIGenAI

oci = ChatOCIGenAI(
model_id="meta.llama-3.3-70b-instruct",
service_endpoint="https://inference.generativeai.sa-saopaulo-1.oci.oraclecloud.com",
compartment_id="ocid1.compartment.oc1..*******",
auth_type="INSTANCE_PRINCIPAL",
is_stream=True,
model_kwargs={"temperature": 0},
)

#works fine
result = oci.invoke("Hello, world!")

agent = create_deep_agent(
model=oci,
)

triggers exception

result = agent.invoke({"messages": [{"role": "human", "content": "Tell me a joke about oracle stock price"}]})

Print the agent's response

print(result["messages"][-1].content)

[avianabr]

the same code using OpenAI works fine

[luigisaetta]

@avianabr so the problem is limited to the Meta model?
I'm using a lot the library with OpenAI and xAI models and I don't find any issue.

[avianabr]

I just tested Meta via Generative AI and OpenID using direct support provided by langchain-openai