zag

Beta

The terminal coding agent.

A coding agent where the window system is the platform. Splits, focus, buffers, sessions, tools, hooks, and plugins are core primitives.

Bring your own model stack.

A focused terminal interface with vim-style modal editing.

Binary-tree window splits let each pane hold its own agent session.

Swap models mid-session without restarting or losing history.

Append-only JSONL sessions keep agent work recoverable.

Built-in read, write, edit, bash, and window management tools.

Multiple tool calls in one turn can run at the same time.

Extend tools, hooks, keymaps, providers, and runtime behavior.

Run single-shot agent tasks for benchmarks and automation.

Features