Launches · AI coding assistants & app builders

Radian

A fast, efficient coding agent in one binary for development pipelines

Visit getrad.devLaunched 2026-10-25 · 0 visitors sent by RankRoot · Show HN (3 points)

What is Radian?

Radian is a coding agent packaged as a single Rust binary that operates from a full-screen terminal interface or headless shell commands. It includes arc, an orchestration system that turns requests into plans, runs tasks using separate worker processes, and evaluates them against a verification gate. Sessions are stored as individual files, enabling users to resume, fork, and export their work.

Who is Radian for?

Developers looking for a fast coding agent and task orchestration tool that integrates into development pipelines.

What can you use Radian for?

Key features

FAQ

What is Radian?

Radian is a fast, efficient coding agent distributed as a single Rust binary that fits into development pipelines and can be driven from a terminal interface or headless shell commands.

How do you install Radian?

You can install Radian using Homebrew with 'brew install hisea/tap/radian', from a release tarball, or from source using Cargo with 'cargo install --git https://github.com/hisea/radian radian-tui'.

How does Radian manage model credentials?

Radian runs a login wizard via 'radian login' that checks your key with a read-only request and saves it in '~/.radian/credentials/auth.json', or you can store the key in an environment variable like OPENAI_API_KEY.

What is Radian arc?

Arc is built into the Radian binary to turn requests into repository tasks, run each task as a separate headless worker, and merge only the code that passes a fixed verification gate.

Profile written from getrad.dev's own pages. For AI agents: Markdown.

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