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.