zero

Zero is an experimental programming language from Vercel Labs aimed at code that AI agents need to write, check, and ship. It is a new systems language (think Rust or Go) where the compiler emits structured, machine-readable output so an agent can actually act on errors instead of pattern-matching error strings. Apache-2.0 licensed, fully free. The README is explicit that the language is not stable yet.

Install drops a binary into ~/.zero/bin. No Docker, no runtime, no Postgres. zero check, zero run, zero build. Cross-compiles to common targets. Source files end in .0.

Watch this if you are paying attention to where agent tooling is going. Do not build production systems on it. Rust and Go are stable, mature, and have actual ecosystems. Zero is a bet on a thesis: that languages built explicitly for AI authorship will outcompete general-purpose ones when agents do most of the writing.

The catch: experimental means experimental. Vercel Labs ships interesting research, but not all of it survives. If you commit to this language now and it gets shelved in eighteen months, you own that decision.