coxcox
A coding agent with a steady hand

Steer the work.
Keep control.

cox is a modular terminal coding agent that turns one reliable event stream into a TUI, headless automation, editor integration, and MCP tools.

Explore the docs →View source ↗
cox · terminal agent
~/project $ cox

  cox  Ready when you are.

  › Add a retry policy to the API client

  • reading crates/cox-provider/src/...
  • 3 checks passed
  ✓ Change ready for your review
Designed for the real work
01

One core, every surface

The same event stream powers interactive sessions, scripts, MCP clients, and editor adapters—so behavior stays consistent wherever cox runs.

02

Safe by default

Tools run through a centralized permission engine and a workspace sandbox. Untrusted text never gets a free pass.

03

Costs you can see

Every request records token usage and cost. Cached context is stable, tool output is archived, and model routing never silently upgrades.

Under active development

Build an agent you can inspect.

cox is being designed in public with a testable, pure state-machine core and explicit trust boundaries.

See the architecture →