Custom Tool Development

AG-Kit provides a powerful framework for creating custom tools that extend your AI agents’ capabilities. Build specialized tools for your specific use cases with full type safety and seamless integration.

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Tool Creation Patterns

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Function Tools

Create tools from TypeScript/JavaScript functions:

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Toolkits

Organize related tools into reusable toolkits:

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Quick Start

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Basic Tool Creation

Create a simple custom tool:

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Tool Integration

Use custom tools with agents:

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Tool Architecture

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BaseTool Interface

All tools implement the standardized interface:

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Tool Result Structure

Consistent result format across all tools:

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Schema Validation

Use Zod for input validation:

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Toolkit Architecture

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Custom Toolkits

Create custom toolkits to organize related tools:

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Using Custom Toolkits

Initialize and use custom toolkits with agents:

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Toolkit Management

Use the toolkit manager for centralized toolkit management:

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Toolkit Events

Listen to toolkit lifecycle events:

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Tool Testing

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Unit Testing

Test custom tools thoroughly:

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Toolkit Testing

Test custom toolkits comprehensively:

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Performance Optimization

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Caching

Implement caching for expensive operations:

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Connection Pooling

Reuse connections for better performance:

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Next Steps