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Tool use (function calling)

Apr 05, 2024 - docs.anthropic.com
The article discusses the use of tools with Claude, an AI model from Anthropic. Tools allow Claude to interact with external client-side functions, enabling users to customize Claude's capabilities. The tools are now in public beta and can be accessed by including the anthropic-beta: tools-2024-04-04 header in API requests. Users can define the set of tools Claude can access, and Claude decides when and how to use these tools based on the user's prompt. The article provides detailed instructions on how to provide tools to Claude, how Claude uses a tool, how to extract tool input, run code, and return results, and how Claude uses tool results to formulate a response.

The article also emphasizes the importance of providing detailed descriptions for the tools and their parameters. It provides examples of good and poor tool descriptions. The article also discusses the limitations and best practices when using tools with Claude, such as using Claude 3 Opus for complex tool use, the number of tools Claude can handle, handling complex and deeply nested tools, sequential tool use, retries, and debugging. The article concludes by encouraging users to explore the potential of tool use with Claude and join their developer Discord to share projects and discuss tips and techniques.

Key takeaways:

  • Claude is an AI model capable of interacting with external client-side tools and functions, allowing users to equip it with custom tools to perform a variety of tasks.
  • Tools must be explicitly provided by the user in each API request, and they are specified in the 'tools' top-level parameter of the API request.
  • When using tools, Claude will often show its 'chain of thought', providing insight into its reasoning process which can help in debugging unexpected behavior.
  • Tool use is a powerful technique for extending Claude's capabilities by connecting it to external data sources and functionality, enabling it to tackle a wide variety of tasks that would be impossible with its base knowledge alone.
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