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OpenFang

OpenFang

Open-Source Agent Operating System

Website openfang.sh
Overview

What it is

Open-source Agent OS built in Rust. 7 autonomous Hands that work for you on schedules. 16 security systems. 53 tools. 40 channels. 27 LLM providers. WASM sandbox, Merkle audit trail, taint tracking. Single binary.

Intent

I need it when

Build and deploy custom autonomous agents without vendor lock-in

OpenFang is MIT-licensed open-source built in Rust, ships as a single binary, and allows users to define custom Hands via HAND.toml manifests with full control over tools, settings, and behavior

Connect agents to external systems and LLM providers with minimal configuration

OpenFang supports 27 LLM providers, 38 built-in tools, Model Context Protocol (MCP) client/server, and Agent-to-Agent (A2A) protocol for P2P networking—enabling flexible integrations without custom code

Ensure agent execution is secure with comprehensive isolation and audit trails

OpenFang implements 16 discrete security systems including WASM dual-metered sandbox, Merkle audit trail, taint tracking, SSRF protection, prompt injection scanning, and Ed25519 manifest signing—exceeding competitors' security depth

Integrate agents across 40+ messaging and communication platforms simultaneously

OpenFang includes 40 built-in channel adapters (Telegram, Discord, Slack, WhatsApp, Teams, IRC, Matrix, etc.) with per-channel model overrides and output formatting, allowing one agent to operate across all platforms

Deploy autonomous agents that run on schedules without manual intervention

OpenFang provides 7 pre-built Hands (Clip, Lead, Collector, Predictor, Researcher, Twitter, Browser) that execute autonomously on schedules, build knowledge graphs, and report to a dashboard—eliminating the need for manual agent triggering

Drop

Not a fit when

  • User requires managed cloud hosting with SLA guarantees; OpenFang is self-hosted only
  • User needs commercial support contracts; OpenFang is community-supported open-source
  • User operates in highly regulated environments requiring vendor liability insurance
  • User lacks Rust/Linux infrastructure expertise to deploy and maintain a binary application
  • User requires proprietary agent frameworks with vendor lock-in guarantees
Commercials

Pricing

Open-source, free to use and self-host