Passing Graph State to Tool No longer works

[HiraveBapu]

Checked other resources

• I added a very descriptive title to this issue.
• I searched the LangGraph/LangChain documentation with the integrated search.
• I used the GitHub search to find a similar question and didn't find it.
• I am sure that this is a bug in LangGraph/LangChain rather than my code.
• I am sure this is better as an issue rather than a GitHub discussion, since this is a LangGraph bug and not a design question.

Example Code

@tool
def state_tool(x: int, state: Annotated[dict, InjectedState]) -> str:
    '''Do something with state.'''
    if len(state["messages"]) > 2:
        return state["foo"] + str(x)
    else:
        return "not enough messages"

@tool
def foo_tool(x: int, foo: Annotated[str, InjectedState("foo")]) -> str:
    '''Do something else with state.'''
    return foo + str(x + 1)

tools = [state_tool,foo_tool]

Error Message and Stack Trace (if applicable)

Invalid argument provided to Gemini: 400 * GenerateContentRequest.tools[0].function_declarations[0].parameters.properties[state].properties: should be non-empty for OBJECT type

Description

I am trying to use langchain-google-genai = "^1.0.10", langgraph = "^0.2.12", receiving error

i am using from langchain_google_genai import ChatGoogleGenerativeAI and model gemini-1.5-flash

System Info

python = ">=3.9,<3.13"
uvicorn = "^0.30.6"
langchain-community = "^0.2.12"
langchain-text-splitters = "^0.2.2"
langchain-chroma = "^0.1.3"
distro = "^1.9.0"
langgraph = "^0.2.12"
aiosqlite = "^0.20.0"
watchfiles = "^0.22.0"
filelock = "^3.15.4"
python-multipart = "*"
langchain-core = "^0.2.34"
sentence-transformers = "^3.0.1"
pypdf = "^4.3.0"

gunicorn = "^23.0.0"
pytz = "^2024.1"
tzlocal = "^5.2"
colorama = "^0.4.6"
langgraph-checkpoint-sqlite = "^1.0.0"
grpcio = "1.64.1"
torch = "2.2.2"
tiktoken = "^0.7.0"
langchain-google-genai = "^1.0.10"
pydantic-settings = "^2.4.0"
pandas = "^2.2.2"
openpyxl = "^3.1.5"
pydantic = "^2.8.2"

[gbaian10]

If other LLMs are working and only Google's isn't, I guess this issue might be similar to

• Tool calling with Gemini through Vertex AI fails because of argument with Union type langchain-google#463

If all the LLMs are not working, then it might be need to investigate.

[vbarda]

+1, @HiraveBapu can you confirm that this is happening for you with another provider, like openai? if not, it's definitely a google issue

[vbarda]

Closing due to inactivity