Firstmate adds Rex support

Kun Chen @kunchenguidOriginally posted 2026.10.23

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i just got into Rex beta, so... firstmate now has full support for Rex! if you are using Rex, this is the most advanced chief of staff agent distro that allows you to talk to a single agent that orchestrates your entire crew across your projects and machines https://github.com/kunchenguid/firstmate free oss, dead simple to use - literally just clone the repo and launch your agent harness in it. supports claude code, codex, pi, opencode, grok build, cursor cli and many other harnesses besides Rex, it also works with other existing session managers like herdr, tmux, cmux, orca