Kotai wooden signpost icon

Kotai

OpenRouter chooser for Cursor, etc.
Route personal and work projects through separate OpenRouter setups.
Download for macOS (version 0.1.14)
Free and no in-app purchases.
One IDE, two OpenRouter setups
Kotai routing
Every request uses either a work or a personal model prefix, then Kotai routes the request to the corresponding OpenRouter setup. Work and personal projects can both run simultaneously.

What it does:

Every request from your agent uses a special model prefix that Kotai uses to route the request to your personal setup or your work setup.

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 set up, and two OpenRouter API keys: one personal and one for work.

Limitations:

Kotai and ngrok must remain running. The ngrok free-plan request and bandwidth limits apply. Anthropic-native clients are not supported.

Changelog

0.1.14

September 7, 2026
  • Fixed the size of the icon in the Dock.

0.1.13

September 7, 2026
  • Improve the Diagnostics window and gave Kotai a dedicated Dock icon.

0.1.12

September 7, 2026
  • Fixed a minor UI issue in the About window.

0.1.11

September 7, 2026
  • Made some UI fixes and tweaks.

0.1.10

September 7, 2026
  • Made some minor UI tweaks.

0.1.9

September 7, 2026
  • Fixed more issues when upgrading and improved the UX in the settings screen and in the setup wizard.

0.1.8

September 7, 2026
  • Made more fixes to the upgrade path.

0.1.7

September 7, 2026
  • Fixed problems where saved keys, etc. would be lost during upgrades.

0.1.6

September 7, 2026
  • Improved setup wizard and settings UX.

0.1.5

September 7, 2026
  • Made UX improvements in Kotai settings.

0.1.4

September 6, 2026
  • Made a few more setup wizard fixes.

0.1.3

September 6, 2026
  • Fixed some bugs in the setup wizard.

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.