--- title: Your AI Agent Is About to Email the Wrong Client. Now What? description: Production AI agents need a pause button before they take irreversible actions like sending emails. The piece describes a Human-in-the-Loop pattern with four... canonical: https://daily.dev/posts/your-ai-agent-is-about-to-email-the-wrong-client-now-what--gozj1nxcq twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Your AI Agent Is About to Email the Wrong Client. Now What? | daily.dev og:description: Production AI agents need a pause button before they take irreversible actions like sending emails. The piece describes a Human-in-the-Loop pattern with four... og:url: https://daily.dev/posts/your-ai-agent-is-about-to-email-the-wrong-client-now-what--gozj1nxcq og:image: https://api.daily.dev/og/posts/goZj1NXCQ.png og:image:alt: Your AI Agent Is About to Email the Wrong Client. Now What? og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Your AI Agent Is About to Email the Wrong Client. Now What? **[Medium](https://daily.dev/sources/medium_js)** · 5 min read · 1 upvotes · 0 comments ## Summary Production AI agents need a pause button before they take irreversible actions like sending emails. The piece describes a Human-in-the-Loop pattern with four steps: Generate, Interrupt, Review, Resume. LangGraph implements this with three primitives: a checkpointer that persists agent state to Postgres or Redis after every node, an interrupt() call that pauses execution inside a node, and Command(resume=...) that wakes the thread using a thread_id. The agent handles most of the cognitive work, while a human reviews pricing, recipients, and contract details before the action goes out. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### How do I pause a LangGraph agent and wait for human approval before it sends an email? Call interrupt() inside the node that needs verification, passing a payload with the action details such as recipient, discount, and proposal summary. The graph writes to its checkpointer and returns control with zero wasted compute. A human then reviews the payload, and the backend resumes execution with Command(resume={"is_valid": True}) using the original thread_id. _daily.dev surfaces patterns like this for engineers building safer human-in-the-loop agent pipelines._ ### How does LangGraph preserve agent state when a workflow is paused for hours waiting on a human? LangGraph's checkpointer saves the entire agent state to a persistent layer, such as PostgreSQL or Redis, after every node execution. This means the server can shut down, reboot, or scale to zero while the thread state remains intact, and the agent resumes exactly where it stopped once a human provides input via Command(resume=...). _Engineers wiring up resilient agent workflows track implementation details like this on daily.dev._ ## Similar posts on daily.dev - [Building a ‘Human-in-the-Loop’ Approval Gate for Autonomous Agents](https://daily.dev/posts/building-a-human-in-the-loop-approval-gate-for-autonomous-agents-krdljp98i) · Machine Learning Mastery · 1 upvotes · 0 comments - [One Agent Workflow That Keeps Human Review in the Loop](https://daily.dev/posts/one-agent-workflow-that-keeps-human-review-in-the-loop-idljoj6z9) · Medium · 0 upvotes · 0 comments - [Building Human-In-The-Loop Agentic Workflows](https://daily.dev/posts/building-human-in-the-loop-agentic-workflows-xpg8rr1rs) · Towards Data Science · 1 upvotes · 0 comments --- Tags: [#python](https://daily.dev/tags/python), [#ai-agents](https://daily.dev/tags/ai-agents), [#llm](https://daily.dev/tags/llm), [#langgraph](https://daily.dev/tags/langgraph) [View this post on daily.dev](https://daily.dev/posts/your-ai-agent-is-about-to-email-the-wrong-client-now-what--gozj1nxcq) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Your AI Agent Is About to Email the Wrong Client. 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