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components_overview.md

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Components overview

There are a few key concepts in AutoChain, which could be easily extended to build new agents.

Chain

Chain is the overall stateful orchestrator for agent interaction. It determines when to use tools or respond to users. Chain is the only stateful component, so all the interactions with memory happen at the Chain level. By Default, it saves all the chat conversation history and intermediate AgentAction with corresponding outputs at prep_input and prep_output steps.

Agent provides ways of interaction, while Chain determines how to interact with agent.

Read more about the chain concept.

Agent

Agent is the stateless component that decides how to respond to the user or whether an agent requires to use tools. It could contain different prompts for different functionalities an agent could have. The main goal for an agent is to plan for the next step, either respond to the user with AgentFinish or take an action with AgentAction.

Read more about agent.

Tool

The ability to use tools make the agent incredible more powerful as shown in LangChain and AutoGPT. We follow a similar concept of "tool" as in LangChain here as well. All the tools in LangChain can be easily ported over to AutoChain if you like, since they follow a very similar interface.

Read more about tool.

Memory

It is important for a chain to keep the memory for a particular conversation with a user. The memory interface exposes two ways to save memories. One is save_conversation which saves the chat history between the agent and the user, and save_memory to save any additional information for any specific business logics.

By default, memory are saved/updated in the beginning and updated in the end at Chain level. Memory saves conversation history, including the latest user query, and intermediate steps, which is a list of AgentAction taken with corresponding outputs.
All memorized contents are usually provided to Agent for planning the next step.

Read more about memory