Fact0

Fact0 is an audit layer and universal fact layer purpose-built for AI agents rather than generic SaaS. Every autonomous action, tool call, and human approval your agents take is recorded in a tamper-evident, cryptographically secured chain, using Ed25519 signatures and SHA-256 hashing so records cannot be quietly altered after the fact.

For engineering, compliance, and founder teams, that translates into unblocking enterprise deals instead of stalling at security review. By proving tool boundaries, data exfiltration protections, and unsupervised loop constraints to enterprise CISOs, Fact0 helps you pass security reviews in days and keep momentum on deals that would otherwise sit in legal and security queues.

Debugging agent behavior is just as straightforward thanks to an interactive execution timeline, which lets you trace exactly what happened step by step. And with Fact0 Spotlight, a built-in AI assistant, you can query your audit data in plain English instead of digging through raw logs by hand.