Introduction

Substr8

Governance infrastructure for AI agents.

Frameworks build agents. Substr8 proves what they did.

Quick Start

pip install substr8
substr8 init my-agent
cd my-agent
substr8 run examples/langgraph/agent.py

Every governed run produces a RunProof — a portable, cryptographically verifiable artifact that proves what happened.

Why Substr8?

AI agents today have a trust problem. When an agent says “I searched the web and wrote the memory” — did it actually?

Most systems rely on logs. Substr8 produces cryptographic receipts.

Core Concepts

  • RunProof — Verification artifact for every governed run
  • FDAA — File-Driven Agent Architecture (agent identity)
  • ACC — Agent Capability Control (policy enforcement)
  • DCT — Deterministic Computation Trail (audit ledger)
  • CIA — Conversation Integrity Assurance (request validation)
  • GAM — Git-Native Agent Memory (memory provenance)

Links

Quick Start