Show HN: Umbel – Remote-control agent CLIs over tmux

Category: devtools

Tags: agent-orchestration, tmux, multi-provider, mcp, workflow-automation

Score: 6.5/10 (Innovation: 7, Technical: 7, Documentation: 6, Utility: 6)

Umbel is a TypeScript CLI that remote-controls multiple agent CLIs (claude, codex, gemini, opencode) over tmux, enabling cross-provider orchestration via MCP, CLI, or YAML workflows. It smartly uses tmux as a daemon and detects completion via provider lifecycle events rather than terminal scraping, with a pluggable provider interface.

Target audience: AI power users, solo developers, backend devs automating agent workflows

Repository: https://github.com/jahala/umbel · TypeScript · MIT · 3 stars

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