Start Node

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Node Details

• Name: seqStart
• Label: Start
• Version: 2.0
• Type: Start
• Category: Sequential Agents
• Base Class: Start

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Parameters

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Required

1. Chat Model
   • Type: BaseChatModel
   • Description: The language model used for the conversation. Only compatible with models capable of function calling, such as ChatOpenAI, ChatMistral, ChatAnthropic, ChatGoogleGenerativeAI, ChatVertexAI, and GroqChat.

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Optional

1. Agent Memory
   • Type: BaseCheckpointSaver
   • Description: Used to save the state of the agent, allowing for persistence across sessions or restarts.
2. State
   • Type: State
   • Description: An object that is updated by nodes in the graph, passing from one node to another. By default, it contains “messages” that are updated with each message sent and received.
3. Input Moderation
   • Type: Moderation
   • Description: Detects text that could generate harmful output and prevents it from being sent to the language model. Can have multiple moderation checks.

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Initialization

1. Retrieves the input moderation settings (if any)
2. Gets the specified chat model
3. Creates and returns an ISeqAgentNode object with:
   • Node identification (id, name, label, type)
   • The START constant as output
   • The language model (both as llm and startLLM)
   • Moderation settings
   • Checkpoint memory (if specified)

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Usage