Fact0 adds audit logs and replay for AI agents
Fact0 helps teams record what an AI agent did and replay the run when something fails. It is aimed at agents that handle real work data, such as refunds, approvals, or customer records. Each action is saved in an append-only ledger, with cryptographic verification to make later tampering easier to detect.
The tool can show the agent’s execution flow as a DAG, replay from a failure point, and help with debugging. Logs can be searched by agent, user, action, or result. Teams can export signed evidence for security or compliance checks.
A natural language search feature lets people search the audit trail in plain words. Fact0 says it has direct integrations with LangChain, CrewAI, and LlamaIndex, with setup taking about 10 minutes, and it is offering one free month of its Pro plan for real workflow testing.
Key points
- Fact0 records AI agent actions so teams can review what happened later.
- Runs can be replayed from a failure point to support debugging.
- Logs can be searched by agent, user, action, or outcome.
- It supports LangChain, CrewAI, and LlamaIndex integrations.
- It helps more with auditability and operations than direct token reduction.
Quick term guide
- append-only ledger
- A record where new entries can be added but old entries are not meant to be changed.
- cryptographic verification
- A math-based way to check whether data has been changed.
- verification
- A separate check that confirms whether the agent finished the task correctly.
- audit trail
- A record of decisions and changes that can be checked later.
- integrations
- Connections that let one app work with another app or service.
- integration
- The work of connecting one tool or service into another product.
- reliability
- How consistently a tool works without failing or behaving unexpectedly.
- auditability
- The ability to check later what happened, who did it, and why.