Redirect your Cursor or Windsurf editor's AI requests to your own API provider without changing any editor settings.
Set up automatic failover between AI API sources so your editor stays responsive when one provider is rate-limited.
Override or append a custom system prompt for each AI coding editor while keeping tool calls and working directory context intact.
Switch between multiple AI API credentials and model lists from a single Windows system-tray app.
Windows 10 x64 or later required, installs a local certificate on first run to intercept HTTPS traffic.
Coday is a Windows desktop application that acts as a middleman between AI coding editors and the AI services they connect to. If you use editors like Cursor or Windsurf, those tools are normally locked to specific AI backends. Coday installs itself as a transparent local proxy on your machine, intercepts the requests those editors make, and redirects them to whatever AI API source you choose instead. The setup process is straightforward: download the installer, open the app, enter your own API credentials, click Connect, and then use your editor as you normally would. Coday installs a local certificate on first run to handle the traffic interception, and the editors do not require any configuration changes on their end. The whole redirection happens silently in the background. The feature set covers several practical scenarios. You can store multiple API sources and switch between them, sync the available model list from your provider with one click, and set up automatic failover so the client moves to a backup source if one becomes unavailable or rate-limited. There is also a per-editor custom system prompt option, where you can replace or append the default prompt while keeping tool calls and working directory settings intact. Additional controls include a dedicated image-generation endpoint, adjustable reasoning effort for models that support it, and a built-in request inspector and diagnostics panel for troubleshooting. The interface supports English and Chinese, includes a dark theme, and runs in the system tray with an optional startup launch. One important note about this repository: it contains no source code. It exists only to host the installer downloads and to serve automatic update checks for already-installed versions. The actual application code is not published here. Windows 10 x64 or later is required.
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