Adding Departure Records to Your LangChain Agents

Your LangChain agent calls tools on external platforms. It chains through multiple services. Eventually, it finishes and moves on. But where's the record of what happened? The Passage Protocol adds signed departure records to LangChain agents: verifiable proof that your agent was somewhere, did something, and left under specific conditions. Why This Matters When agents operate across multiple platforms, you need audit trails. Insurance, compliance, and incident response all depend on knowing where an agent has been.