Deal stuck on the
security review?

The audit layer built for AI agents, not generic SaaS. Prove your agent's tool permissions, data exfiltration guards, and human-in-the-loop validation to enterprise CISOs.

Cryptographically secured by Ed25519

Tool Boundary Logging

Track every tool execution, input parameters, and output results with origin attributes.

Tamper-Evident History

Mathematical proof that logs haven't been altered, verified by third-party auditors.

Signed Evidence Packs

Evidence packs stamped with an Ed25519 digital wax seal. Auditors mathematically verify reports.

Async, Non-Blocking

Async batching - your app keeps running and agent loops never slow down.

FACT0 · AI AGENT ACCOUNTABILITY
END-TO-END GOVERNANCE

01 / Ingestion

GPT-4o

GPT-4o

Primary LLM cognitive planner orchestrating compliance rules.
Transactions DB

Transactions DB

Read-replica SQL ledger containing transaction records.
Risk Classifier

Risk Classifier

Classifier tool calculating risk metrics for transaction rows.
Alert Engine

Alert Engine

Notification tool triggering real-time compliance hooks.

02 / Interception

Listening…

03 / Execution

Financial Audit

Workflow

LLM Model

Tool Call

State Write

Human Gate

04 / Compliance

Events Logged

0

Compliance Breaks

0

Secured Trace

Enterprise Inputs

Everything your agents run on

Context Brain

Fact0 intercepts every span

Agent Flywheel

Specialized agents, executing in sync

Business Impact

Real outcomes, tracked in real time

From install to proof in three steps.

1

Log

Add our SDK to your agent or backend. Important actions are recorded with actor, resource, and outcome.

# Install the SDK
pip install fact0-sdk
# Initialize & log
import fact0
client = fact0.Client(api_key="f0_live_...")
client.audit.log(
actor={"id": "user_123", "type": "human"},
action="document.delete",
resource={"id": "doc_456", "type": "document"},
outcome="success"
)
2

Lock

Each event links to the one before it. Change any record and the chain shows it. Under the hood we use SHA-256 - your auditor gets math, not trust.

Event n-2

0x8a2f1b3e…

Event n-1

0xc7d90f4a…

Event n

0x3b91e52c…

Each event's hash chains to the previous — tamper detection is mathematically certain

3

Prove

Export a PDF or evidence pack. Share a read-only link. Auditors verify integrity without needing your database.

Security Audit Report
PDF

AI accountability for regulated and high-stakes work

Fintech

Loan & payment agents

Prove every approval, rejection, and override - for regulators and internal audit.

8 events logged · Chain verified · SOC-2 evidence ready

Healthcare

Clinical & admin assistants

Track access to patient data with actor identity and outcome.

Zero PII exposure risk · Actor identity tracked · HIPAA-ready

Support

Autonomous support bots

Show exactly what the bot changed, refunded, or escalated.

12 events logged · Full bot actions visible · 1-click evidence export

Legal / HR

Document workflows

Audit trail for deletes, shares, and AI-generated summaries.

6 events logged · Chain verified · eDiscovery pack ready

WHY FACT0

Built for the CISO review, not just the demo.

Enterprise buyers don't care how smart your agent is. They care whether they can verify exactly what permissions it used, what data was exposed, and when humans intervened.

FOR ENGINEERING TEAMS

See the full story behind every agent run

Beyond compliance, Fact0 traces agent runs as interactive timelines - replay, debug, and monitor real-time LLM metrics, error rates, and conversation sessions from one dashboard.

Execution DAG

Execution DAG

Visualize every step an agent took - tools, decisions, and branches.

Replay & debug

Replay & debug

Rewind to the exact state when something went wrong.

Observability Hub

Observability Hub

Real-time LLM call metrics, tool execution stats, error rates, and conversation sessions — all in one place.

Fact0 Spotlight

Ask your audit log anything

Fact0 Spotlight is the AI assistant built into your dashboard. Ask in plain English about failed runs, PII access, chain integrity, or exports - it reads your live audit data and can jump you to the right page.

  • Natural-language questions over audit logs, executions, and chain status
  • Compliance-ready answers with event IDs, actors, and next steps
  • Deep-links into Audit Logs with filters already applied
Fact0 Spotlight assistant panel in the Fact0 dashboard

Agent-specific controls your buyers ask about

Prove tool restrictions, data boundaries, and human approvals are enforced at runtime.

STANDARDCONTROLHOW IT'S SATISFIED
CC6.8 (Logical Access)Tool Boundary ValidationCryptographic runtime trace of every tool call and permission scope
Security ReviewData Leakage AuditLog of all actor and agent data egress paths
Unsupervised LoopsAction BoundariesAutomated tracking of agent loops and execution budget limits
Human-in-the-LoopManual ApprovalsAudit logs of manual overrides and human approval bypasses
CC7.2 (Monitoring)Continuous AuditingAppend-only, SHA-256 chained log of all autonomous activity

Fact0 is completing its own SOC 2 Type II audit in Q3 2026. Security posture available on request.

Start free. Scale when you're ready.

Start free with 30,000 monthly events. Choose the plan that fits your volume, or scale up to custom SLAs and enterprise compliance.

Free

Everything you need to instrument agents and pass your first security review.

$0/ mo
30,000 audit events / mo
5 GB storage
30-day retention
1 team seat
5 evidence exports / mo
Start free
Most Popular

Pro

For teams shipping AI agents in production with collaborative tools, active share links, and role-based access control.

$79/ mo
500,000 audit events / mo
90-day retention
5 team seats included
Slack & PagerDuty alerts
Dedicated Slack support
99.9% Uptime SLA
Unlimited active share links
Execution DAG replay & debug
Conversation sessions & analysis
Versioned Prompt Registry
Real-time Webhook alerts
Start free trial
Custom Feature Requests

Enterprise

Self-host on your infrastructure or private VPC, with unlimited scale, custom retention, dedicated SLAs, and custom feature requests.

Custom
Custom feature requests & integrations
Custom audit event volume
Unlimited seats & evidence exports
SAML/SSO & SCIM provisioning
Bring Your Own Key (BYOK)
Self-host or private VPC deployment
Custom SLAs & support SLAs
Contact sales

Got Questions?

If you can't find what you're looking for, get in touch or join our Slack community.

Integration & Architecture

Audit & Security

Performance & Scale