Reef adds /reefine: turn a sentence into a new agent capability

Paul Liang @pliang279Originally posted 2026.09.24

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Train and evolve your agent harness just by talking to it! Today’s update to Reef introduces the /reefine slash command: just say what you want the agent to do, eg: 💬 "> /reefine add a /chat mode" 🔊 "> /reefine tell me out loud when you're done" ⚡ "> /reefine add jev as a tool": 120 papers screened in 9 s Reef builds the change, checks it, and ships a new agent with that capability. Try it here: http://github.com/Human-Agent-Society/reef

This post quotes another post: “Reef v0.1.0: /reefine lets agents grow new abilities on request”