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Fact0 Platform

Fact0 Platform is the managed cloud service behind app.fact0.io. There is no self-hosted edition — sign up, create an API key, and integrate via the SDK against api.fact0.io. It runs the audit ingest pipeline, hash-chain verification, telemetry storage, and the compliance dashboard so you only deal with API keys and SDK calls.

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What you get

Universal fact layer · tamper-evident audit chain

Each event SHA-256 chained per tenant. Verify with GET /v1/verify or share a read-only link.

Execution telemetry

Spans, DAGs, and frame-by-frame replay for every agent run.

Async ingest by default

Audit writes batch in the background. Receipts are polled by the SDK so you never block on the network.

Security evidence packs

Export PDF + ZIP bundles mapped to common security controls. Auditor-ready in minutes.

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How it fits together

┌──────────────────┐   f0_live_*        ┌────────────────────────┐
│ Your agent / app │ ─────────────────▶ │  Fact0 Platform   │
│ (Py / TS / Go)   │   /v1/* events     │  api.fact0.io     │
└──────────────────┘   /api/v1 spans    │                        │
                                        │  Hash chain · Storage  │
                                        │  Verification · Export │
                                        └────────────┬───────────┘
                                                     │
                                          ┌──────────▼──────────┐
                                          │ app.fact0.io   │
                                          │ Dashboard · DAG     │
                                          │ Share links · PDF   │
                                          └─────────────────────┘

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Get started in 60 seconds

1

Create an account

app.fact0.io → sign in → onboarding wizard.
2

Mint a write-scoped API key

Dashboard → Settings → API Keys → New key. Copy the f0_live_... value.
3

Install the SDK

pip install fact0-sdk
4

Log your first event

See the Quickstart - first event lands in under a minute.

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Two pipelines, one platform

NeedUseEndpoint
Compliance, security reviews, tamper evidenceAudit log/v1/*
Debugging, replay, latency/token analysisTelemetry/api/v1/*
High-value agent actionsBothboth
See Audit vs telemetry for the full breakdown.

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SDKs

Python

pip install fact0-sdk

TypeScript

npm install @fact0/sdk

Go

go get github.com/fact0-ai/fact0/sdk/go

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Status