Build a Basic AI Agent from Scratch: Tools

8 hours ago

Tools are functions or programs exposed to an LLM to enable autonomous actions within an environment, like a computer.
Modern LLMs have native tool-calling capabilities that output JSON-structured requests, improving reliability over earlier text-based methods.
Key tools implemented include: run_bash for executing commands, read_file for file reading, glob_files for file searching, grep for content searching, write_file for file creation, edit_file for string replacement, and webfetch for web page retrieval.
Tool schemas define each tool's name, description, and parameters, which are provided to the agent for structured tool usage.
The agent loop integrates tools by processing tool calls, executing them, and appending results to the conversation context.
The enhanced agent can perform complex tasks, such as fetching web content and writing files, but lacks planning for long-term tasks, which will be addressed in future series installments.

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