{"slug": "five-stop-conditions-every-production-claude-tool-loop-needs", "title": "Five Stop Conditions Every Production Claude Tool Loop Needs", "summary": "A developer outlines five stop conditions that production Claude tool-use loops require, arguing that unlike demo agents, production loops must let application code—not the model—decide when to halt. The approach includes schema and business validation before execution, typed success and error responses (such as AMOUNT_MISMATCH) that let Claude repair a request once, tool allowlisting, and full run traces recording model version, inputs, tool calls, results and approvals.", "body_md": "A demo agent loop runs until the model says it is done. A production loop cannot work that way. Each tool call is a request to change something, and your code, not the model, decides when the loop stops.\n\nClaude returns a structured tool-use block: a tool name and arguments. Before anything runs, the application checks five things:\n\nValid JSON that asks for an invalid action is still invalid. The schema checks shape; business validation checks meaning.\n\nSend back a typed success or error, with fields the model can use safely. Separate two kinds of error:\n\n`AMOUNT_MISMATCH` with the recorded amount. Claude may repair the request once.\nA loop that returns free-text errors invites blind retries and invented fixes.\n\nWrite these in code:\n\nThe simplest control is the tool you never give the agent. An accounts-payable agent that may request invoice approval does not need a payment tool. If payment is not on the allowlist, no prompt can make the loop release one.\n\nRecord the model version, inputs, tool calls, results and approvals for each run. When someone asks why the agent did something, the trace is the answer.", "url": "https://wpnews.pro/news/five-stop-conditions-every-production-claude-tool-loop-needs", "canonical_source": "https://dev.to/poorna_reddy/five-stop-conditions-every-production-claude-tool-loop-needs-213o", "published_at": "2026-10-05 22:56:19+00:00", "updated_at": "2026-10-05 23:18:03.077822+00:00", "lang": "en", "topics": ["ai-agents", "ai-tools", "large-language-models", "ai-safety", "developer-tools"], "entities": ["Claude", "Anthropic"], "also_reported_by": [], "alternates": {"html": "https://wpnews.pro/news/five-stop-conditions-every-production-claude-tool-loop-needs", "markdown": "https://wpnews.pro/news/five-stop-conditions-every-production-claude-tool-loop-needs.md", "text": "https://wpnews.pro/news/five-stop-conditions-every-production-claude-tool-loop-needs.txt", "jsonld": "https://wpnews.pro/news/five-stop-conditions-every-production-claude-tool-loop-needs.jsonld"}}