Subagent Harness MCP is an open-source MCP gateway that lets Codex orchestrate external coding agents through their native harnesses. It is intended for developers building multi-agent coding workflows involving tools such as Claude Code and other coding agents.
In the Multi-agent & orchestration space, subagent-harness-mcp takes a focused approach. It focuses on coordinating multiple external coding agents through a single MCP gateway. It is built as an open-source project for developers building multi-agent coding workflows. The project is open source (MIT). It ships for the command line and API, and it can be self-hosted.
It is developed by Thang1710, and it first shipped in 2026. The project is developed in the open on GitHub with 31 commits in the last 90 days. Key capabilities include MCP gateway, agent orchestration, and native harness support. It exposes integrations via an MCP server.
Summary written by a language model from the project’s public pages.
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