Custom Tool

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Node Details

  • Name: CustomTool
  • Type: CustomTool
  • Version: 2.0
  • Category: Tools

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Input Parameters

  1. Select Tool
    • Label: Select Tool
    • Name: selectedTool
    • Type: asyncOptions
    • Load Method: listTools
    • Description: Allows the user to select a custom tool from the list of available tools in the database.
  2. Return Direct
    • Label: Return Direct
    • Name: returnDirect
    • Type: boolean
    • Optional: true
    • Description: If set to true, the output of the tool will be returned directly to the user without further processing.

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Functionality

  • The node fetches available custom tools from the database and presents them as options for the user to select.
  • It initializes the selected tool with the provided configuration, including any custom overrides for the tool’s name, description, schema, and function.
  • The node supports dynamic variable resolution, allowing the tool to access variables defined in the chatflow.
  • It creates a DynamicStructuredTool instance that can be used within the chatflow to execute the custom tool’s functionality.

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Technical Details

  • The node uses TypeORM for database interactions to fetch and manage custom tools.
  • It leverages the Zod library for schema validation and transformation.
  • The custom tool’s function is dynamically evaluated and executed within the context of the chatflow.
  • The node supports overriding various aspects of the tool, including its name, description, schema, and function, allowing for flexible customization.

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Use Cases

  • Integrating specialized data processing or analysis tools into a conversation flow.
  • Adding custom API calls or external service integrations within a chatbot interaction.
  • Implementing domain-specific logic or calculations as part of a conversational AI system.

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Notes

  • The node requires access to the application’s data source and database entities to function properly.
  • Custom tools must be pre-defined and stored in the database before they can be used with this node.
  • The node supports dynamic schema definition using Zod, allowing for complex input validation for custom tools.