superpowers installation in antigravity ide doesn't work

[AnnaFromPoland]

• [ yep ] I searched existing issues and this is not a duplicate

Environment (required)

Field	Value
Superpowers version	unknown - whatever loads with agy plugin install https://github.com/obra/superpowers command
Harness (Claude Code, Cursor, etc.)	antigravity agent
All plugins installed	literally this is the only one i'm installing

Antigravity IDE Version: 2.0.4
VSCode OSS Version: 1.107.0 (user setup)
Commit: def9583aef9852ff94cb0dea16ede9bb6b095b30
Date: 2026-06-02T00:22:56.234Z
Electron: 39.2.3
Chromium: 142.0.7444.175
Node.js: 22.21.1
V8: 14.2.231.21-electron.0
OS: Windows_NT x64 10.0.26200
Language Server CL: 924974766

Is this a Superpowers issue or a platform issue?

• [ yep ] I confirmed this issue does not occur without Superpowers installed

What happened?

can't run superpowers in antigravity using terminal command installation. not sure if installation is the problem (there are no errors) or the plugin just doesn't turn on in antigravity.

Steps to reproduce

1. open antigravity > open terminal in antigravity
2. paste the command: agy plugin install https://github.com/obra/superpowers ; and hit enter
3. 3 empty tabs show up - plugin ; install ; superpowers
4. what am i supposed to do with these tabs? they asked me to select a language, i don't understand this question, now they don't ask me anything, slash commands dont work in those tabs, slash commands also dont work in agent tab - only original 3 agent commands are available, /goal /schedule and /grill-me
5. when i close those tabs i get this prompt:

like, what changes to the plugin am i supposed to make here? readme file with installation instruction doesn't mention i should "apply any changes to the plugin" when adding this plugin to antigravity

Expected behavior

i thought this plugin would install and the slash commands added by superpower would be available in agent's tab, listed with the 3 other slash commands

Actual behavior

no slash commands added, only those 3 weird empty tabs open up, i don't know what to do with them.

Debug log or conversation transcript

[AnnaFromPoland]

workaround: use diff install command:

npx skills add https://github.com/obra/superpowers -a =ai-gizmo-here=
or
npx skills add obra/superpowers -a =ai-gizmo-here=

still doesn't solve the above bug. just solves the problem of "i want to have superpowers on antigravity".

[obra]

can you point me at the documentation for how antigravity IDE wants plugins installed and built?

what we have is built for their CLI tool.