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Introduction:
Tamper-evident audit layer for AI agents to pass enterprise security reviews.
Added on:
Jun 17 2026
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Freemium
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Fact0 Product Information

What is Fact0?

Fact0 is an audit layer and universal fact layer purpose-built for AI agents rather than generic SaaS. It logs every autonomous action, tool call, and human approval in a tamper-evident, cryptographically secured chain using Ed25519 and SHA-256. The platform helps engineering, compliance, and founder teams unblock enterprise deals and pass security reviews in days by proving tool boundaries, data exfiltration protections, and unsupervised loop constraints to enterprise CISOs. It also features an interactive execution timeline for debugging and an AI assistant named Fact0 Spotlight to query audit data in plain English.

How to use Fact0?

Developers can integrate Fact0 into their backend using the Python SDK to start logging agent actions, tool permissions, and human overrides. Once integrated, teams can monitor real-time activity feeds via the dashboard, visualize execution steps via a DAG, generate signed compliance evidence packs, and ask questions about logs in plain English using the built-in Fact0 Spotlight AI assistant.

Fact0's Core Features

Tamper-Evident History with SHA-256 chained logs and Ed25519 digital signatures

Tool Boundary Logging to track execution, input parameters, and output results

Signed Evidence Packs for procurement-ready CISO compliance sharing

Execution DAG for interactive timeline visualization, replay, and debugging

Fact0 Spotlight AI assistant for natural-language questioning over audit logs

Async, non-blocking batching to preserve agent loop performance

Fact0's Use Cases

#1

Fintech loan & payment agents proving approvals, rejections, and overrides for regulators

#2

Healthcare clinical assistants tracking access to patient data with identity logs

#3

Autonomous support bots showing exact changes, refunds, or customer escalations

#4

Legal and HR document workflows maintaining audit trails for deletes and AI summaries

FAQ from Fact0

How does Fact0 satisfy common security review controls?

What is Fact0 Spotlight?

Is Fact0 compliant with industry standards?

Fact0 Reviews (0)

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Fact0 Pricing

Free

$0 per month

30,000 audit events/mo, 5 GB storage, 30-day retention, 1 team seat, 5 evidence exports/mo, core platform features like append-only ledger and Python SDK.

Pro

$79 per month

500,000 audit events/mo, 50 GB storage, 90-day retention, 5 team seats included, Slack & PagerDuty alerts, 99.9% Uptime SLA, unlimited active share links, execution DAG replay & debug, real-time Webhook alerts.

Enterprise

Custom

Unlimited scale, custom retention, unlimited seats & evidence exports, SAML/SSO & SCIM, Bring Your Own Key (BYOK), self-host or private VPC deployment, custom SLAs, and custom feature requests.

Analytic of Fact0

Fact0 Website Traffic Analysis

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Mar 2026 - May 2026 All Traffic

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