Overview

Gizzi is the core runtime engine that executes agent code. It provides a secure sandboxed environment for running agent logic while managing state, memory, and communication with external services.

Execution Model

Gizzi uses a message-passing execution model where agents communicate through channels. Each agent runs in its own isolated context with access to:
  • Memory store - State persistence across executions
  • Skill registry - Capability discovery and invocation
  • Message bus - Inter-agent communication
  • Model gateway - LLM interactions

Runtime Versions

Gizzi Pro

Full-featured runtime with all capabilities. Best for production agents.

Gizzi Fast

Optimized for speed. Reduced sandboxing, faster execution.

Gizzi Local

Runs entirely locally. No external API calls. Privacy-focused.

Agent Lifecycle

Sandboxing

Gizzi provides multiple sandboxing levels:

Memory Management

Agents can persist memory across executions:
Memory types:
  • Session - Lost when agent stops
  • Persistent - Stored in database
  • Shared - Accessible across agents

Model Integration

Gizzi supports multiple LLM providers:
Supported providers:
  • Allternit gateway (all models via aliases)
  • Local (Ollama, MLX, Bonsai WebGPU)