ZONE

A coding agent that's actually yours.

Zone runs on your machine, on your own API key — Claude Code / Cursor capability on real tasks, with no caps, full cost transparency, and open source. Your code and your key never leave your machine.

git clone https://github.com/BedreddinErkan/zone
⬡ GitHub
zone — terminal
▸ Create a minimal static Astro site from scratch ● Write(package.json) + {"name":"e2e","type":"module",…} ● Write(astro.config.mjs) + import { defineConfig } from 'astro/config'; ● Write(src/pages/index.astro) ● Bash(npm install) ✓ ● Bash(npm run build) ✓ 2 page(s) built in 643ms done · $0.09 (47.2k tok) · 84.4s · claude-sonnet-4-6

BRING YOUR OWN KEY

Stop guessing what your coding agent costs.

Subscriptions hide your usage behind rate limits and a flat monthly price. Zone runs on your own API key — so every task shows its real cost, and you only pay for what you use. For most developers that's far less than a Max plan. We'll even show you when it isn't.

● coding sessions / day
5
● avg cost / session
$0.30
real Zone runs: full site scaffold $0.09 · typical feature / refactor (cached) $0.20–0.50
pro + zone
$65
max 5×
$100
max 20×
$200

ZONE · byok

  • pay only for what you use
  • no caps — never blocked mid-session
  • every cent visible, per task

MAX · subscription

  • flat rate, predictable
  • rate-limited (5-hour rolling window)
  • usage is opaque vs a per-token bill

Rates (Anthropic, Jun 2026): Sonnet 4.6 $3 / $15 per MTok, cache-hit input $0.30 (−90%); Opus 4.8 $5 / $25. claude.ai Pro $20, Max 5× $100, Max 20× $200 — consumer plans don't include API access; Claude Code under a plan is rate-limited. Zone is BYOK on the Anthropic API.

THE LOOP

A real agent in your terminal.

01 ▸

Describe a task.

In plan mode, Zone drafts a step-by-step plan and waits — you approve, refine, or give feedback before it touches a file. (Shift+Tab)

02 ●

It works.

It reads your code, makes AST-validated edits, and runs commands behind a safety layer — reading the output and fixing its own mistakes until the task is done.

03 ✓

You see the cost.

Tier-aware model routing and prompt caching keep it cheap; every run ends with exact tokens, time, model, and dollars.

Plan-mode approval, AST-validated edits, scoped subagents, tier-aware routing, prompt caching, per-task cost telemetry — built in.

Not another subscription.

Zone Subscription agents
✓Your key, direct to the API ✗Locked to one vendor's plan
✓No caps — never blocked mid-session ✗Rate-limited (5-hour rolling windows)
✓Every cent visible, per task ✗Usage hidden behind a flat price
✓Runs on your machine ✗Their cloud
✓Open source (AGPL-3.0) ✗Closed

Everything you need. Nothing you don't.

●BYOK

Anthropic + OpenAI, your keys, direct.

●No caps

Pay per token, never throttled.

●Cost telemetry

Real dollars on every run.

●Plan mode

Approve before it touches your code.

●Sessions

Resume any run where you left off.

●Model routing

Right model per task, automatically.

●Self-hosted

Your machine, your data.

●Open

AGPL-3.0, inspect everything.

▸ slash commands
/modelswitch model mid-session /keysmanage API keys /sessionsresume past runs /initset up a repo /metricstoken + cost breakdown /limitsusage limits /exportexport session /copycopy output /feedbacksend feedback Shift+Tabtoggle plan mode

Full command reference in the README.

Running in two minutes.

1 — clone & build
$ git clone https://github.com/BedreddinErkan/zone && cd zone && npm install && npm run build
2 — add your API key
$ export ANTHROPIC_API_KEY=sk-ant-... # or OPENAI_API_KEY
3 — run
$ cd your-project && zone