My key

Check your API key

See its balance and expiry date, and get a ready setup file for Claude Code and VS Code.

Your key is not saved by this page or your browser, and never appears in the address bar. Leaving the page clears it.

No key yet? Get a key

Setup

Set up Claude Code and VS Code

Pick one way. Both save your key only on your computer.

Install Claude Code if you don’t have it yet. How to install

Option 1: a ready file

Check your key above to make your setup files.

Windows

Windows: double-click nyxo-claude-login.cmd. If Windows warns you, click “More info”, then “Run anyway”.

Mac · Linux

Mac or Linux: open Terminal and run:

sh ~/Downloads/nyxo-claude-login.sh

The file contains your key, so it deletes itself after it runs. If you don’t use it, delete it. The file is made by your browser on your computer. It is not sent to us.

Option 2: one command

Run the command, then paste your key when asked. It stays hidden.

Windows: open PowerShell

irm nyxo.space/claude | iex

Mac or Linux: open Terminal

curl -fsSL https://nyxo.space/claude.sh | bash

Then close VS Code and your terminal windows fully and open them again. Type claude to start.

Log out of Claude Code

Run the command, or download the logout file and run it like the login file. Your key is removed completely. Then close and reopen VS Code and your terminal.

Windows: open PowerShell

irm nyxo.space/claude-logout | iex

Mac or Linux: open Terminal

curl -fsSL https://nyxo.space/claude-logout.sh | bash
sh ~/Downloads/nyxo-claude-logout.sh
OpenCode

Set up OpenCode

Pick one way. Both save your key only on your computer.

Install OpenCode if you don’t have it yet. How to install

Option 1: a ready file

Check your key above to make your setup files.

Windows

Windows: double-click nyxo-opencode-login.cmd. If Windows warns you, click “More info”, then “Run anyway”.

Mac · Linux

Mac or Linux: open Terminal and run:

sh ~/Downloads/nyxo-opencode-login.sh

The file contains your key, so it deletes itself after it runs. If you don’t use it, delete it. The file is made by your browser on your computer. It is not sent to us.

Option 2: one command

Run the command, then paste your key when asked. It stays hidden.

Windows: open PowerShell

irm nyxo.space/opencode | iex

Mac or Linux: open Terminal

curl -fsSL https://nyxo.space/opencode.sh | bash

In your project folder, type opencode. Pick a model with /model.

Log out of OpenCode

This removes your key from OpenCode only. Claude Code is not changed.

Windows: open PowerShell

irm nyxo.space/opencode-logout | iex

Mac or Linux: open Terminal

curl -fsSL https://nyxo.space/opencode-logout.sh | bash
sh ~/Downloads/nyxo-opencode-logout.sh
Switch models

Change model any time

In Claude Code or the VS Code Claude panel, type:

/model claude-opus-5.5
/model gpt-6-astra
/model gemini-4-argon

Or start Claude Code with a model:

claude --model gpt-6-astra

In OpenCode, type /model and pick a model available to your key:

/model
Safety

How we keep your key safe

Hidden

The key is hidden while you type or paste it, here and in the login commands.

Not stored

This page keeps nothing. Leaving it, pressing Forget or 15 idle minutes clears the key.

Never in a link

Your key is never put in a web address, so it can’t end up in history or logs.

Fully removable

Logout deletes everything the login saved on your computer.