antigravity-superpowers

Bring the power of Superpowers to Antigravity.

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Superpowers is an incredible skill-based workflow system that gives AI coding assistants structured, reliable behavior — brainstorming, planning, test-driven development, code review, debugging, and more. It was originally designed for Claude Code, but the workflows themselves are platform-agnostic gold.

This project ports that entire system to Antigravity, preserving the original flow as faithfully as possible. The goal is not to reinvent Superpowers — it's to make them available on Antigravity with the minimal set of changes needed for native compatibility. If you've used Superpowers before, everything should feel familiar. If you haven't, this is a great way to start.

One command. Full profile. Ready to go.

npx antigravity-superpowers init

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Why This Exists

The original Superpowers repo doesn't support Antigravity, and there's no official port planned. I wanted to use Superpowers workflows in Antigravity projects, so I built this myself.

This is my attempt to bring the full Superpowers skill set to Antigravity — as close to the original as possible. The goal was never to fork and diverge; it was to translate just enough to make everything work natively on a different platform. Superpowers skills bring real structure to AI-assisted development — brainstorming before implementation, planning before coding, verification before completion claims — and that discipline shouldn't be locked to one platform.

This port keeps 12 out of 14 original skills intact and consolidates the remaining 2 into a single new skill that fits Antigravity's execution model. Every skill preserves its original intent, logic, and flow — only the platform-specific references, tool names, and execution primitives have been adapted.

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What's Included

13 skills covering the full development lifecycle:

Skill	Description
brainstorming	Structured exploration before committing to an approach
writing-plans	Detailed, step-by-step implementation plans
executing-plans	Disciplined plan execution with progress tracking
single-flow-task-execution	Ordered task decomposition with review gates (new)
test-driven-development	Write tests first, implement second
systematic-debugging	Root cause tracing with supporting techniques
requesting-code-review	Structured review flow with checklists
receiving-code-review	Handling feedback systematically
verification-before-completion	Prove it works before claiming it's done
finishing-a-development-branch	Clean branch wrap-up with workflow options
using-git-worktrees	Parallel branch management
using-superpowers	Skill routing and session bootstrap
writing-skills	Create new skills that follow the system's conventions

Plus supporting infrastructure: workflows, agents, validation tests, and an AGENTS.md contract that ties it all together.

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Quick Start

# Scaffold the .agent profile into your project
npx antigravity-superpowers init

Or install globally:

npm install -g antigravity-superpowers
antigravity-superpowers init

Or install from source (Git):

git clone https://git.visssoft.com/hanh.tonguyen/antigravity-superpowers.git
cd antigravity-superpowers
npm link

# Now use it anywhere
antigravity-superpowers init

After init, verify everything is wired up:

antigravity-superpowers validate

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CLI Reference

antigravity-superpowers init [dir] [options]

Initialize the .agent profile in a project directory.

# Initialize in current directory
antigravity-superpowers init

# Initialize in a specific project
antigravity-superpowers init /path/to/project

# Preview files that would be copied (no changes made)
antigravity-superpowers init --dry-run

# Replace an existing .agent profile
antigravity-superpowers init --force

# Backup existing .agent before replacing
antigravity-superpowers init --force --backup

Option	Short	Description
--force	-f	Overwrite existing .agent directory
--backup	-b	Backup existing .agent to .agent-backup-<timestamp> before overwrite (use with --force)
--dry-run	-n	Preview the file list without copying anything

antigravity-superpowers validate [dir]

Run profile validation checks on an initialized project. Verifies file presence, skill completeness, frontmatter validity, legacy pattern absence, and AGENTS mapping contract.

# Validate current directory
antigravity-superpowers validate

# Validate a specific project
antigravity-superpowers validate /path/to/project

antigravity-superpowers list

List all 13 bundled skills with their names and descriptions.

antigravity-superpowers list

antigravity-superpowers --version

Show the current CLI version.

antigravity-superpowers --version   # or -v

antigravity-superpowers --help

Show usage information.

antigravity-superpowers --help      # or -h

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How It Works

The CLI copies a complete .agent profile into your project root. Once initialized, Antigravity picks up the profile automatically:

1. Session starts — loads .agent/AGENTS.md rules and using-superpowers skill
2. Each request gets routed to the most relevant skill
3. Design work flows through brainstorming → planning → execution
4. Every task is tracked in docs/plans/task.md (created at runtime)
5. Nothing is marked done without running verification commands first

Session Start → Load AGENTS.md → Load using-superpowers
                                        ↓
                              Route to relevant skill
                                        ↓
                          ┌─── Design change? ───┐
                          │ yes                   │ no
                     Brainstorm            Single-flow execution
                          ↓                       ↓
                    Writing plans          Verify before completion
                          ↓                       ↓
                  Single-flow execution   Finish branch
                          ↓
                  Verify before completion
                          ↓
                     Finish branch

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What Changed from Original Superpowers

This port aims to stay as close to the original Superpowers as possible. The changes are the minimum required to run natively on Antigravity.

Execution Model

The one notable structural change. The original Superpowers dispatches multiple coding subagents in parallel — but Antigravity doesn't support parallel subagent execution. So the two skills that relied on that capability (dispatching-parallel-agents and subagent-driven-development) couldn't be ported as-is. Instead, they were consolidated into a single new skill — single-flow-task-execution — which preserves the same decomposition logic, task queuing, and review gates, just executed sequentially rather than in parallel. The workflow is the same; the concurrency model is what changed.

Original Skill	What Happened
dispatching-parallel-agents	Merged into single-flow-task-execution
subagent-driven-development	Merged into single-flow-task-execution
single-flow-task-execution	New — consolidates decomposition, queuing, and review loops

Task Tracking

	Approach
Original	TodoWrite tool
Port	Live table at <project-root>/docs/plans/task.md (created at runtime, not bundled)

Tool & Platform Vocabulary

Platform-specific references were translated — the underlying behavior is unchanged:

Original	Antigravity Port
Claude / Claude Code	Antigravity
Skill tool	view_file
TodoWrite	Update docs/plans/task.md
superpowers:<skill>	.agent/skills/<skill>/SKILL.md
CLAUDE.md	.agent/AGENTS.md

Skill Adaptations

Most skills required only terminology and path updates. A few needed slightly more work:

• requesting-code-review — uses a checklist-based review flow instead of subagent dispatch
• writing-plans / executing-plans — handoff paths and tracker references updated for Antigravity conventions

The rest — brainstorming, test-driven-development, verification-before-completion, finishing-a-development-branch, and others — preserve their original behavior with only naming and path normalization.

Antigravity-Native Additions

Infrastructure added to make the profile work as a first-class Antigravity citizen:

• .agent/AGENTS.md — tool translation contract and execution rules
• .agent/workflows/ — workflow entrypoints (brainstorm.md, execute-plan.md, write-plan.md)
• .agent/agents/code-reviewer.md — reviewer agent profile
• .agent/tests/ — automated profile validation (skill presence, frontmatter, legacy pattern detection)

Full Diff: See ANTIGRAVITY-PORT-DIFFERENCES.md for the exhaustive skill-by-skill comparison and CURRENT-FLOW.md for the complete workflow diagram.

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Contributing

Contributions are welcome! If you find a skill that could be ported more faithfully, a translation that's off, or an Antigravity convention that's not followed — open an issue or PR.

When making changes, run the validation suite to make sure everything still checks out:

npm test
antigravity-superpowers validate

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Development

git clone https://git.visssoft.com/hanh.tonguyen/antigravity-superpowers.git
cd antigravity-superpowers

npm test              # Run 20 tests (cli, init, validate)
npm run smoke:pack    # Verify package contents (31 required files)

Install from Source

npm link              # Symlink CLI globally
antigravity-superpowers --version

Publishing

npm version patch     # or minor/major
npm publish

prepublishOnly runs npm test and npm run smoke:pack automatically.

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License

MIT