OpenCastor Documentation

OpenCastor is an open-source runtime layer that sits between a robot's hardware and its AI. It handles authentication, safety invariants, telemetry, agent harness management, and fleet coordination — so you can focus on what your robot does, not how it stays safe.

• Getting Started

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  Install the runtime, connect your first robot, and run your first command in under 10 minutes.

  Installation

• Safety & P66

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  Protocol 66 guarantees. Every robot, every time. Enforced in code, not prompts.

  Safety

• Harness Research

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  263,424 harness configurations. Your robot's idle compute helps find the optimal one.

  Research

• RCAN Protocol

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  The open protocol that gives every robot a canonical identity, scoped permissions, and standardized message types.

  RCAN

Ecosystem

Component	Repo	Description
Runtime	OpenCastor	Core runtime, API, CLI, harness engine
Protocol	rcan-spec	RCAN specification v1.9
Python SDK	rcan-py	Python RCAN implementation
TypeScript SDK	rcan-ts	TypeScript RCAN implementation
Research	opencastor-autoresearch	Harness evaluation pipeline
Client App	opencastor-client	Flutter fleet management app

Current Version

• OpenCastor: v2026.3.21.2
• RCAN Spec: v1.9.0
• rcan-py: v0.8.0 · rcan-ts: v0.8.0
• OHB-1 Champion: lower_cost — score 0.6541 (21/30 tasks)