Build AI Apps with Python: Full-Featured CLI Agent — Tools Guardrails History | Episode 23

Everything from Phase 4 in one agent. Tools, guardrails, conversation history — a real terminal AI assistant you can talk to. We build a full-featured CLI agent that combines every pattern from the AI Agents phase. Three tools — calculate for math, define_word for definitions, get_weather for weather. Input guardrails block dangerous requests before they reach Claude. Conversation history remembers what you said. An interactive terminal loop lets you chat, use tools, and see guardrails in action. Tool definitions are pasted from a prepared file to keep the video focused on the integration code. Student code: https://github.com/GoCelesteAI/build-ai-apps-python/tree/main/episode23 Every keystroke is shown on screen with 3-second pauses so you can follow along at your own pace. What You'll Learn: • Combining tools + guardrails + conversation history • Interactive CLI with input loop and quit command • Three tool functions (calculate, define_word, get_weather) • Tool definitions pasted with :r for efficiency • Tool dispatcher routing calls to functions • Input guardrail blocking dangerous keywords • Agent loop handling multi-step tool use • Live interactive demo with five different queries Key Takeaways: 1. Tools + guardrails + history combine into one powerful agent 2. The input loop IS the CLI — while True with input() and quit 3. The inner agent loop handles multi-step tool use until end_turn This is Episode 23 of Build AI Apps with Python in Neovim — Phase 4 Capstone (AI Agents). Taught by CelesteAI. Like & subscribe for more tutorials! #python #ai #cliagent #aiagent #tooluse #guardrails #claudeapi #anthropic #neovim #programming #tutorial #machinelearning #artificialintelligence #coding #pythontutorial #buildaiapps #llm #genai #capstone