Add Tamper-Evident Audit Logs to Your AI Agent

Add Tamper-Evident Audit Logs to Your AI Agent Your AI agent needs immutable audit trails. Here's how to add HMAC-chain verified logs: The Problem If you're running AI agents in production — especially for finance, healthcare, or anything regulated — you need audit logs. But regular logging has a fatal flaw: logs can be deleted or modified after the fact. When an agent makes a bad trade, sends an incorrect email, or accesses data it shouldn't have, you need to prove the log hasn't been tampered with. Standard application logs in a database or file system don't give you that guarantee. The Solution: HMAC-Chain Audit Logs The Agent Audit Log API uses HMAC-SHA256 hash chains — the same cryptographic primitive behind blockchain integrity, but without the blockchain overhead. Each log entry's hash includes the previous entry's hash, creating a tamper-evident chain. If anyone modifies or deletes an entry, the chain breaks and verification fails. Here's how to integrate it into a Node.js agen