langgraph/how-tos/many-tools/

[giscus[bot]]

langgraph/how-tos/many-tools/

Build language agents as graphs

https://langchain-ai.github.io/langgraph/how-tos/many-tools/

[jojohannsen]

The first graph has conditional edge from 'agent':

builder.add_conditional_edges(
    "agent",
    tools_condition,
)

and the 'tools_condition' code and signature show:

Signature:
tools_condition(
    state: 'Union[list[AnyMessage], dict[str, Any], BaseModel]',
) -> "Literal['tools', '__end__']"

The visual graph is showing three branches out of agent -- the branches to 'tools' and 'end' that's in that signature, which makes sense.

But there's also a branch from 'agent' back to 'select_tools' -- it doesn't seem to be from the tools_condition, since that's not a return value. Why is this branch showing? Is it in the code somewhere?

[vbarda]

@jojohannsen thanks for spotting! the conditional edge was missing path_map to properly indicate possible node destinations from the "agent" node. we rely on these for constructing the chart

builder.add_conditional_edges(
    "agent",
    tools_condition,
    path_map=["tools", "__end__"]
)```

[davibc90]

I've been looking into this code for a while.... If I got your point, there is no conditional routing implementation back to select_tools node from the agent node!

It's done automatically by setting up the retry policy when adding the node as part of the graph!

Once the last ToolMessage returns an error, the execution goes back and restarts from the select_tools node, as if it had just started from the beginning!

The main difference is in the last_message[-1]... This time is gonna evaluate the ToolMessage condition as true, running query over tools using the full history of the chat!

[rasulv]

I'm using the first code above and getting direct answer from the llm, the function tools is not calling by agent/graph.

I'm using the mistralai with following packages:

langchain==0.2.17
langchain-community==0.2.19
langchain-core==0.2.43
langchain-elasticsearch==0.2.2
langchain-experimental==0.0.65
langchain-mistralai==0.1.10
langgraph==0.2.52

output:

================================ Human Message =================================

Can you give me some information about AMD in 2022?
================================== Ai Message ==================================

Sure, I can provide some information about AMD (Advanced Micro Devices) as of 2022. However, please note that the situation may change as time goes on, and I recommend checking the latest news and financial reports for the most up-to-date information.

As of early 2022, AMD is a leading manufacturer of microprocessors, graphics processors, and related technologies for the computer, gaming, and cloud computing industries. The company has a strong presence in both the consumer and enterprise markets, with its products used in a wide range of devices, from laptops and desktops to servers and gaming consoles.

In recent years, AMD has made significant strides in gaining market share in the CPU (central processing unit) market, which has long been dominated by Intel. AMD's Ryzen processors have been well-received by critics and consumers alike, offering strong performance and value compared to Intel's offerings. Additionally, AMD's EPYC processors have gained traction in the data center market, challenging Intel's dominance in this space as well.

In the GPU (graphics processing unit) market, AMD competes with Nvidia for share in the discrete GPU market, which is used for gaming and other graphics-intensive applications. AMD's Radeon graphics cards have a strong following among gamers and enthusiasts, although Nvidia has maintained a lead in this market in terms of market share and performance.

In terms of financial performance, AMD has reported strong revenue growth in recent years, driven by demand for its CPUs and GPUs. The company has also benefited from the ongoing shift to remote work and learning, which has increased demand for PCs and cloud computing resources. However, like other tech companies, AMD has faced supply chain challenges and component shortages due to the COVID-19 pandemic, which may impact its ability to meet demand in the short term.

Looking ahead, AMD is expected to continue its momentum in the CPU and GPU markets, with new product launches and technology innovations on the horizon. The company is also investing in emerging technologies such as AI and machine learning, which could present new growth opportunities in the coming years.```

[PovedaAqui]

It would be great to have an educational video on this topic.