Open Source Radar — October 8: The Agent Wranglers
Today's trending list is less about new frameworks and more about the awkward middle of agent development: supervising fleets of coding agents, auditing what they touch, and keeping them fed on long tasks. Four fresh projects, all verified on GitHub.
cmux (Swift, ~28,000 stars) is an open-source macOS terminal built specifically for running AI coding agents — Ghostty-based, with vertical tabs, per-agent notifications, and everything exposed through a CLI and Unix socket so agents can drive the terminal themselves. It's climbing daily trending because a terminal designed around parallel agent sessions is suddenly a normal thing to want. Use it as the cockpit when you run more than one coding agent at a time.
security-audit-skill (JavaScript) is Cloudflare's open-source coding-agent skill that turns your agent into a multi-phase security auditor: reconnaissance, coverage-led hunting, validation, then machine-readable findings that get independently checked before they ship. Cloudflare says this skill seeded the internal vulnerability-discovery harness it now runs fleet-wide, so this is the single-repo starting point of a production system. Grab it if you've ever wondered whether your agent can actually review code for security holes rather than just style.
hallmonitor (Go) is a read-only dashboard for your coding-agent fleet: every Claude Code and Codex session — on your laptop and your SSH boxes — shown live in a terminal board, menu bar, or right around the MacBook notch, with who's working, who's stuck, and what each one is doing. It launched on Product Hunt today, and the privacy stance is the selling point: it never sends prompts or approves anything, it just watches. Reach for it when you've lost track of which terminal that agent was in.
pmtui (Rust) tackles the longer-horizon version of the same problem: a tmux-backed supervisor that keeps one persistent Claude or Codex session per project nudged toward a goal you set, auto-handles the ordinary choices, and only pulls you in when a decision genuinely needs a human. The insight is that agent loops drift on long tasks, so pmtui keeps the loop outside the agent and rebuilds the prompt from your goal plus the agent's own last status each time. It hit Product Hunt today with its first releases this week — a bet on supervision layers over agent runtimes.
Worth watching this week.
Supervising agents is becoming its own tooling category — which of these would survive a real week of your workflows? Tell us in the comments. Sources: cmux (GitHub) · security-audit-skill (GitHub) · hallmonitor (GitHub) · pmtui (GitHub)
