A local workbench
for AI coding agents.

Arco runs locally and opens in the browser. Start with one coding agent, or use several on the same project.

Claude, Codex, Cursor, Ollama, llama.cpp and LM Studio. GPL-3.0-only.

LM Studio was tested with a simulated server only. Provider details and optional integrations →

npm install -g arco-workbench
arco setup

Requires Node.js 24 or 26. On Windows, install Git for Windows too.

Models and provider subscriptions are not included; provider charges follow the selected provider's terms.

Getting started

Start with one agent

One connected provider and one project are enough for a first workflow.

This guide describes Arco 0.1.5.

Connect a provider.
Follow its sign-in or local-model setup in Connections. Choose a model that is available to that account or runtime.
Open a project session.
Select New session on a Home project card. Choose the provider, model and permissions, then select LAUNCH WORKFLOW.
Send a small request.
Ask the agent to read the README and explain how to run the project without changing files. Read the reply and inspect the project under FILES.

Arco calls a group of agents a cluster. Each member has its own conversation. Members share a project and can work from a shared plan and task board.

Select a member to read about its role.

Keeps the plan current, assigns work to members and checks their results.

example-appExample cluster

DIRECTORIDLE

DIRECTOR

The plan is ready. Builder 1 can start the change.

BUILDER 1WORKING

BUILDER

I will add the empty state to example-app.

TESTERIDLE

TESTER

Ready to test the change.

REVIEWERIDLE

REVIEWER

Ready to review the diff.

Find files, plans, reviews and voice controls, and learn how agents work together.

Requires Node.js 24 or 26. On Windows, install Git for Windows too.

For a fresh install, install the package, then run setup:

npm install -g arco-workbench
arco setup

Setup asks before installing the background service and creating an application shortcut. It then starts the service and opens Arco.

Already installed? Use arco update or the in-app UPDATE AND RESTART. Save drafts and finish or cancel running turns first.

Follow Welcome to Arco to add a project and connect a provider. Provider accounts and models are configured separately.