HumanLayer

HumanLayer is an API and SDK that solves one of the trickiest challenges in building agentic AI: knowing when to involve a human. It gives tool-calling AI Agents the ability to pause, reach out to a real person via Slack, Email, or Discord, and get the help, feedback, or approval they need before proceeding. This human-in-the-loop capability means your AI agents don't have to operate in a vacuum — they can escalate intelligently, just like a real coworker would. HumanLayer integrates with major orchestration frameworks and LLMs, making it easy to add reliable human oversight to any AI workflow.