Kotai wooden signpost icon

Kotai (交代)

Route personal and work projects through separate OpenRouter accounts or keys.
Configure one assigned static ngrok URL once, then route personal and work projects through that same URL on every launch.
Download for macOS (version 0.1.2)
Free and no in-app purchases.
One IDE, two OpenRouter accounts
Kotai routing
The model prefix selects the account for each request, so personal and work projects can run at the same time.

What it does:

Kotai is a macOS menu bar app that routes each Cursor or OpenAI-compatible client request through work or personal OpenRouter accounts or keys.

Data path and privacy:

Prompt data travels through ngrok, then on to OpenRouter.

View the source code on GitHub.

Why "Kotai"?

Kotai (交代) is the Japanese word for alternation or changeover.

Requirements:

The download requires an Apple Silicon Mac with macOS 14 or newer, a free ngrok account with ngrok installed, its authtoken, one assigned static dev URL from the ngrok Domains dashboard, and two OpenRouter API keys—one personal and one for work.

Limitations:

Kotai, ngrok, and your Mac must remain running, and the configured assigned static ngrok URL must remain available to your account. ngrok free-plan request and bandwidth limits apply. Anthropic-native clients are not supported. OpenRouter’s Cursor integration is beta, and some Cursor features may bypass custom API keys or base URLs.

Changelog

0.1.2

September 6, 2026
  • Use a static ngrok URL.

0.1.1

September 6, 2026
  • Moved the website and update feed to kotai.jp.

0.1.0

September 6, 2026
  • Added simultaneous prefix-based routing to personal and work OpenRouter accounts.
  • Added support for Cursor and other OpenAI-compatible clients through a stable ngrok URL.
  • Stored service credentials in Keychain and protected the proxy with a separate token.