LangChain×AWS
Add Human-in-the-Loop to LangChain for AWS security.
Stop your autonomous agents from making highly destructive, hallucinated API calls to AWS. Wrap your execution logic in LetsPing to enforce a hard pause until a human reviews the payload.
How it works
1. Intercept AWS Logic
Instead of hitting the AWS API directly from your LangChain agent, you yield the payload to LetsPing. The agent's execution thread halts completely.
2. Human Review & Patching
You get a push notification on your phone. You review the exact AWS JSON payload the agent wanted to send. You can approve it, reject it, or patch the values directly.
3. Resume Execution
Once approved, the LangChain execution thread resumes, and the actual AWS mutation is allowed to proceed using the (potentially patched) payload.
LangChain Example Implementation
import { createLetsPingTool } from "@letsping/adapters/langchain";
import { z } from "zod";
const awsTool = createLetsPingTool({
name: "execute_aws_action",
description: "Executes a destructive action on AWS. Requires human approval.",
priority: "high",
schema: z.object({
// Define the exact AWS payload your agent wants to send
id: z.string(),
action: z.string(),
})
});