What is ultrapowers?
ultrapowers is a Claude Code mod by popmechanic that the client for ultrapowers: /ultrapowers commits an approved plan and runs on an exe.dev fleet you provision — a disposable sandbox runs the plan as a pool of tasks, a pool of builders,. It is listed under Security and has 4 GitHub stars.
| Type | Claude code mod |
|---|---|
| Author | popmechanic |
| Repository | popmechanic/ultrapowers |
| Popularity | 4 GitHub stars |
| Category | Security |
| Security | Low risk (88/100) |
| Rank | #747 of 5,272 Claude Code mods; #103 in Security |
| Last commit | 2026-10-03 |
| Hooks | 4 events |
| Sees | mcp__ultrapowers__show_screen calls |
| Draws on | Pane, AbovePrompt |
Is ultrapowers safe to install?
ultrapowers scores 88/100 on the MCPMods security check: Low risk. No checks raised a concern. It passed 5 of 8 checks.
Mod footprints come from claude plugin validate, which lists every event a mod hooks and every API call it makes without running it.
| Check | Result |
|---|---|
| No network access | Pass |
| Starts no processes | Pass |
| Writes no files or config | Pass |
| Doesn't read environment variables | Pass |
| Only sees the events it hooks | Pass |
| Drives Claude (model calls, prompts) | Note |
| Validator reported problems | Note |
| No license detected | Note |
API calls in its code
| Call | What it means |
|---|---|
$.clock.every | |
$.command.register | |
$.fs.read | reads files |
$.fs.stat | reads files |
$.process.spawn | |
$.prompt.submit | drives Claude |
$.store.get | keeps its own state |
$.store.set | keeps its own state |
$.tool.register | drives Claude |
$.ui.invalidate | draws interface |
$.ui.open | draws interface |
$.ui.resolve | draws interface |
How do I install ultrapowers?
- Check your Claude Code version. Mods need Claude Code 2.1.287 or later and are on by default.
claude --version
- Read its footprint. This lists every event it hooks and every API call it makes, without running it.
git clone https://github.com/popmechanic/ultrapowers claude plugin validate ./ultrapowers/.
- Install it. Run this in your terminal, then /reload-plugins in an open session.
claude plugin marketplace add popmechanic/ultrapowers && claude plugin install ultrapowers@ultrapowers
Or ask Claude to set it up
Paste this into Claude Code and it installs ultrapowers for you:
Install the "ultrapowers" Claude Code mod from https://github.com/popmechanic/ultrapowers. Run claude plugin validate on it first and show me what it can access before you enable it.