https://datatweets.com/courses/ai-agents/the-agent-loop/Recent content in The Agent Loop with Claude on DATATWEETSHugoenCopyright (c) 2025 DatatweetsSun, 28 Jun 2026 09:00:00 +0200https://datatweets.com/courses/ai-agents/the-agent-loop/lesson-1-tool-use-with-claude/Fri, 26 Dec 2025 09:00:00 +0200https://datatweets.com/courses/ai-agents/the-agent-loop/lesson-1-tool-use-with-claude/Tool use is the mechanism that turns a chatbot into an agent. Learn to define a tool with a name, description, and JSON-schema inputs, pass it to messages.create, and read the tool_use block Claude returns when it wants to act.https://datatweets.com/courses/ai-agents/the-agent-loop/lesson-2-handling-tool-use-and-tool-results/Fri, 26 Dec 2025 09:00:00 +0200https://datatweets.com/courses/ai-agents/the-agent-loop/lesson-2-handling-tool-use-and-tool-results/Close the loop on a single tool call: detect the tool_use block, run the real function, build a tool_result with a matching tool_use_id, append the assistant turn and then a user turn carrying the result, and call the model again to get the final answer.https://datatweets.com/courses/ai-agents/the-agent-loop/lesson-3-building-the-agent-loop/Fri, 26 Dec 2025 09:00:00 +0200https://datatweets.com/courses/ai-agents/the-agent-loop/lesson-3-building-the-agent-loop/Generalize a single tool call into the agent loop: a function that calls Claude and, while the stop reason is tool_use, runs the requested tools and feeds results back until a final answer — with a max-steps guard. See it run end to end.https://datatweets.com/courses/ai-agents/the-agent-loop/lesson-4-errors-parallel-tools-and-stopping/Fri, 26 Dec 2025 09:00:00 +0200https://datatweets.com/courses/ai-agents/the-agent-loop/lesson-4-errors-parallel-tools-and-stopping/A real agent loop needs guardrails: catch tool errors and return them as is_error results so Claude can recover, run multiple tool calls and return all results in one message, and bound the loop with a max-steps cap so it can never run forever.https://datatweets.com/courses/ai-agents/the-agent-loop/lesson-5-guided-project-atlas-first-tool-loop/Fri, 26 Dec 2025 09:00:00 +0200https://datatweets.com/courses/ai-agents/the-agent-loop/lesson-5-guided-project-atlas-first-tool-loop/Put Module 2 together: give Atlas two real tools and the agent loop, wire it to the Anthropic client, and run it on a question that needs both tools — the skeleton every later module extends.