claurst

claurst is an open source terminal coding agent written in Rust, built to replicate the behavior of Claude Code. It reads files, runs commands, searches codebases, and handles git operations from your terminal. The project was built from behavioral specs, not copied source code.

The appeal is obvious: Claude Code is a proprietary tool that costs money. claurst gives you a similar workflow for free (assuming you bring your own API key for whatever model you point it at). Being written in Rust means it starts fast and uses less memory than Node.js-based alternatives. The project grew quickly after the Claude Code source leak sparked interest in how these agents work under the hood.

For developers who want a terminal coding agent but do not want to pay for Claude Code, this is the most direct alternative. Aider and Continue are more established options with broader model support and larger communities. claurst is newer and less battle-tested, but the Rust foundation and active development are promising.

The catch: this is early-stage software riding a wave of hype. The feature set is thinner than Claude Code, the plugin ecosystem does not exist yet, and you are depending on a solo maintainer. If you need reliability today, the established tools are safer bets.