Open Claude Cowork is an open-source desktop agent harness and orchestrator developed by ComposioHQ. It provides a dedicated co-working environment powered by the Claude Agent SDK and the Composio Tool Router, bringing autonomous agent workflows to a desktop interface. In day-to-day operation, users interact with a cross-platform Electron application running on macOS, Linux, or Windows. The interface maintains persistent multi-session chat contexts and streams model responses in real time using Server-Sent Events (SSE). The orchestrator leverages the Claude Agent SDK along with Opencode to support multi-turn agentic loops, providing structured visual feedback for every tool call and action taken by the model. Unlike traditional CLI-only agents that restrict execution to local shell commands and file editing, Open Claude Cowork specializes in cross-service orchestration. Through the Composio Tool Router, the harness connects models to more than 500 third-party APIs and developer services (including GitHub, Slack, Gmail, and Google Drive), allowing the agent to bridge local development with cloud-based workflows. Open Claude Cowork is open-source software released under the MIT License. It is free to inspect, modify, and self-host, requiring users to bring their own API credentials for model access and connected external tools.
Tags: ai agent, assistant, cli, coding agent, developer tools, OpenSource