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Fix: Superpowers .sh hook opening in editor on Windows (Cursor)

Problem: When opening a new agent session in Cursor on Windows, the session-start bash script opens in the editor instead of executing silently. This happens because Cursor tries to run the hook file directly, and Windows doesn’t know how to execute a bash script (or extensionless file containing a bash shebang).

Root cause: The Superpowers plugin ships a hooks-cursor.json pointing to ./hooks/session-start — an extensionless bash script. On Windows, Cursor cannot execute this natively.

Fix: Create a thin PowerShell wrapper that Cursor can execute natively, then point hooks-cursor.json to it.

Step 1 — Find your plugin version folder

Open this path in Explorer and note the hash folder name:

C:\Users\YOUR_USERNAME\.cursor\plugins\cache\cursor-public\superpowers\

There may be multiple hash folders. Check which one Cursor is actually using by looking at Cursor Settings → Hooks — the path shown there tells you the active version.

Step 2 — Create session-start.ps1

Inside the hooks\ subfolder of the active version, create a file named session-start.ps1 with this content (replace the hash with your actual folder name):

& ‘C:\Program Files\Git\bin\bash.exe’ ‘C:/Users/YOUR_USERNAME/.cursor/plugins/cache/cursor-public/superpowers/YOUR_HASH/hooks/session-start’

Verify Git Bash is installed at that path, or adjust accordingly. You can find your bash path with:

where.exe bash

Step 3 — Update hooks-cursor.json

In the same hooks\ folder, open hooks-cursor.json and change:

“command”: “./hooks/session-start”

to:

“command”: “./hooks/session-start.ps1”

Step 4 — Verify it works

From PowerShell, run:

Set-Location “C:\Users\YOUR_USERNAME\.cursor\plugins\cache\cursor-public\superpowers\YOUR_HASH”

& “./hooks/session-start.ps1”

You should see a JSON blob with additional_context containing the Superpowers skill instructions.

Step 5 — Restart Cursor

Fully close and reopen Cursor. The hook will now execute silently via PowerShell.

Notes:

  • This does not affect Claude Code — only hooks-cursor.json (Cursor-specific) is modified, not hooks.json (Claude Code format)

  • The original session-start bash script is untouched; the .ps1 file is just a thin Windows wrapper that calls it

  • If the Superpowers plugin updates, the plugin may create a new hash folder — you’ll need to reapply this fix to the new folder

  • Tested on Windows 11 with Cursor 2.6.x and Git for Windows