CODEX CLI ON VAGON
$0.99 trial · 1 hour + 7-day storage · billed by the minute
codex
> Inspect the active SolidWorks document. Report whether it is a part, assembly or drawing. Do not modify anything.
● MCP: connected to SolidWorks
● Computer Use: reading the FeatureManager tree
✓ Read-only report ready: part, 3 configurations
Planet $0.99/h
Spark $1.67/h
WHY VAGON
● 01
Installs in one command
The Codex CLI has standalone installers for Windows and Linux, plus npm. Run one in a terminal on your Vagon computer; nothing goes on your laptop.
Sandboxed, then isolated
Codex’s default workspace-write sandbox limits writes to your project folder and keeps network access off. It all runs on a separate Vagon VM, away from your laptop’s files.
MCP server, app and GPU together
Register an app’s MCP server with codex mcp add on the same computer. RTX-enabled NVIDIA GPUs and 149 preinstalled apps, or install your own.
Watch it, take over, reset
It is a live desktop in your browser: grab the mouse when Codex gets stuck. Reset to a clean image after a risky run; shut down and the meter stops.
SETUP
● 02
01
Pick Windows for the app guides (SolidWorks needs Windows) or Ubuntu for coding and browser work. Add your apps and Vagon installs them before you connect.
02
Open a terminal on the Vagon computer, run OpenAI’s installer, then start codex in your project folder and sign in with your own ChatGPT account or another sign-in method OpenAI offers. Nothing gets installed on your laptop.
TERMINAL · VAGON COMPUTER
Ubuntu shown. On Windows use the PowerShell installer or npm install -g @openai/codex from OpenAI’s docs. Vagon supplies no AI access or keys.
03
Codex reads AGENTS.md before it does any work, so put build and test rules there. Register each app’s MCP server with codex mcp add (or a [mcp_servers] table in config.toml) and check it with codex mcp list.
MCP servers
A local and a remote server, from the Codex FreeCAD and Figma guides.
AGENTS.md
Global rules go in ~/.codex/AGENTS.md. Add an AGENTS.md in the repository root for project rules.
04
Pick how much Codex may do. The default Auto preset (workspace-write sandbox, on-request approvals) edits files in your working folder and asks before leaving it or using the network. For a look-only first run use read-only, or switch with /permissions.
FIRST RUN
A read-only first run, with a prompt from the Codex + SolidWorks guide.
COST
● 04
RECOMMENDED FOR AGENTS
Planet
RECOMMENDED
$0.99/hour
4 cores · 16 GB T4 GPU · 16 GB RAM
Spark
RECOMMENDED
$1.67/hour
4 cores · 24 GB GPU · 16 GB RAM
TRIAL
1 hour of Planet (or equivalent Spark) and 7-day storage.
By the minute
1-minute billing increments.
$7.99 / month
Personal storage plan with a 75 GB disk, so your apps and files stay.
11 performances
Switch between them and keep files and apps.
Rates can change based on usage, data transfers and regions. Storage plan not included in hourly rates.
WORKING WITH CODEX
● 05
AGENTS.md, config and sandbox
AGENTS.md is read first. Codex loads ~/.codex/AGENTS.md, then each AGENTS.md from the project root down to your folder. Closer files win, up to 32 KiB combined by default.
config.toml holds defaults. Personal settings live in ~/.codex/config.toml. Trusted projects can add a .codex/config.toml with overrides.
Three sandbox modes. read-only, workspace-write and danger-full-access. Workspace-write keeps network access off unless you enable it.
Approvals. on-request asks when Codex needs to step outside the sandbox. Setting never turns prompts off, so pair it with a sandbox you trust.
MCP on the Vagon computer
Add servers from the CLI. codex mcp add <name> -- <command> registers a local server; add --url for a remote one. codex mcp login handles OAuth.
Or edit config.toml. Each server is a [mcp_servers.name] table with a command and args. Scope it to one project in .codex/config.toml.
Pick up a saved chat. codex resume reopens a recent chat from the current repository.
You bring OpenAI access and licenses. Sign in with your own ChatGPT account or another OpenAI method. Apps such as SolidWorks or Premiere Pro need your own license on the computer.
FAQ
How do I install Codex CLI on a Vagon computer?
Does Vagon provide OpenAI access or API keys?
How do I connect an app over MCP?
Where do AGENTS.md and config.toml go?
What do the sandbox and approvals do?
GET STARTED
Create a computer, install Codex and watch it work. $0.99 for the first hour and 7 days of storage.