antigravity-superpowers: Skill for Claude Code

.agent/skills/using-superpowers/SKILL.md

using-superpowers is a skill for Claude Code, Codex from bonnguyenitc/antigravity-superpowers. It costs 29 tokens per session (1,169 once invoked), scanned A, a copy of using-superpowers, MIT.

A set of rules for finding and using other coding-agent skills before work begins. It also explains how to locate the relevant instruction files.

In plain words
What is it for?
Starting conversations, checking whether a skill applies, and loading the instructions for that skill before taking action.
Why use it?
It helps the agent apply the right specialized instructions consistently instead of guessing which skills to use.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions subagents; names the TodoWrite tool.

This is bonnguyenitc/antigravity-superpowers's own configuration. It tells Claude Code and Codex how to work on antigravity-superpowers itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything antigravity-superpowers configures →

Reuse

Borrowing it

Nothing to install: this file belongs to bonnguyenitc/antigravity-superpowers. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/bonnguyenitc/antigravity-superpowers/main/.agent/skills/using-superpowers/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/bonnguyenitc/antigravity-superpowers

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for using-superpowers

README.md
[![agentmods](https://agentmods.dev/badge/skills/bonnguyenitc/antigravity-superpowers/using-superpowers/github.svg)](https://agentmods.dev/skills/bonnguyenitc/antigravity-superpowers/using-superpowers)
Your own site
<a href="https://agentmods.dev/skills/bonnguyenitc/antigravity-superpowers/using-superpowers"><img src="https://agentmods.dev/badge/skills/bonnguyenitc/antigravity-superpowers/using-superpowers/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for using-superpowers

Your own site · 80×15
<a href="https://agentmods.dev/skills/bonnguyenitc/antigravity-superpowers/using-superpowers"><img src="https://agentmods.dev/badge/skills/bonnguyenitc/antigravity-superpowers/using-superpowers.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,169 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 77% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00029 $0.01169
Opus 5 $0.00015 $0.00584
Sonnet 5 $0.00006 $0.00234
Haiku 4.5 $0.00003 $0.00117

Measured 9d ago against content hash 11a598a53474, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

using-superpowers scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

77% identical to using-superpowers — 16 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.agent/skills/using-superpowers/SKILL.md · 116 lines

How it starts

The opening of the file, as written. The whole thing — 116 lines — stays where its author put it; the contents beside it link to each section on GitHub.

IF A SKILL APPLIES TO YOUR TASK, YOU DO NOT HAVE A CHOICE. YOU MUST USE IT.

This is not negotiable. This is not optional. You cannot rationalize your way out of this.

Instruction Priority

Superpowers skills override default system prompt behavior, but user instructions always take precedence:

  1. User's explicit instructions (direct requests, project config) — highest priority
  2. Superpowers skills — override default system behavior where they conflict
  3. Default system prompt — lowest priority

If the user says "don't use TDD" and a skill says "always use TDD," follow the user's instructions. The user is in control.

How to Access Skills

Use view_file on the skill's SKILL.md:

.agent/skills/<skill-name>/SKILL.md

Example: .agent/skills/brainstorming/SKILL.md

Platform Adaptation

This package is configured for Google Antigravity. Tool name equivalents are documented in references/antigravity-tools.md.

Using Skills

The Rule

Invoke relevant or requested skills BEFORE any response or action. Even a 1% chance a skill might apply means that you should invoke the skill to check. If an invoked skill turns out to be wrong for the situation, you don't need to use it.

digraph skill_flow {
    "User message received" [shape=doublecircle];
    "About to EnterPlanMode?" [shape=doublecircle];
    "Already brainstormed?" [shape=diamond];
    "Invoke brainstorming skill" [shape=box];
    "Might any skill apply?" [shape=diamond];
    "Invoke Skill tool" [shape=box];
    "Announce: 'Using [skill] to [purpose]'" [shape=box];
    "Has checklist?" [shape=diamond];
    "Create TodoWrite todo per item" [shape=box];
    "Follow skill exactly" [shape=box];
    "Respond (including clarifications)" [shape=doublecircle];

    "About to EnterPlanMode?" -> "Already brainstormed?";
    "Already brainstormed?" -> "Invoke brainstorming skill" [label="no"];
    "Already brainstormed?" -> "Might any skill apply?" [label="yes"];
    "Invoke brainstorming skill" -> "Might any skill apply?";

    "User message received" -> "Might any skill apply?";
    "Might any skill apply?" -> "Invoke Skill tool" [label="yes, even 1%"];
    "Might any skill apply?" -> "Respond (including clarifications)" [label="definitely not"];
    "Invoke Skill tool" -> "Announce: 'Using [skill] to [purpose]'";
    "Announce: 'Using [skill] to [purpose]'" -> "Has checklist?";
    "Has checklist?" -> "Create TodoWrite todo per item" [label="yes"];
    "Has checklist?" -> "Follow skill exactly" [label="no"];
    "Create TodoWrite todo per item" -> "Follow skill exactly";
}

Read the full file on GitHub · 116 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 9d ago First seen · 116 lines · 29 tokens per session scan A 11a598a53474

Subscribe to this mod's changes

using-superpowers is a skill published in the GitHub repository bonnguyenitc/antigravity-superpowers (19 stars, last pushed 4mo ago), licensed MIT. It adds 29 tokens to every session and 1,169 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 77% identical to using-superpowers, differing in 16 lines, and is treated as a copy.

Related

Other skills, from other repositories

codeck

Route explicit requests from a host coding agent to one or more locally configured AI executors through Codeck, attach Markdown or other project files, moderate cross-model consultation, expose disagreements, and synthesize traceable results. Use when the user explicitly names Codeck or asks to consult, compare, or…

isdou/codeck · 108 tokens

openai-docs

Use when the user asks how to build with OpenAI products or APIs, asks about Codex itself or choosing Codex surfaces, needs up-to-date official documentation with citations, help choosing the latest model for a use case, latest/current/default-model prompting guidance, or model upgrade and prompt-upgrade guidance; use…

rojim666/SztuCode · 105 tokens

control-chrome

Control the user's Chrome browser for tasks that depend on existing Chrome state: tabs, logged-in sessions, or extensions. Prefer purpose-built connectors, APIs, or CLIs when available.

rojim666/SztuCode · 40 tokens

Presentations

Read, create or edit PowerPoint or Google Slides decks. Use for presentation, slide deck, PowerPoint, PPT, PPTX, or Google Slides requests.

rojim666/SztuCode · 35 tokens

Spreadsheets

Create, edit, analyze, and verify standalone spreadsheet files or Google Sheets-ready workbooks, including .xlsx, .xls, .csv, and .tsv. Do not use for live controlling Microsoft Excel app or a live Excel session.

rojim666/SztuCode · 52 tokens

template-creator

Create or update a reusable personal Codex artifact-template skill. Use when the user invokes $template-creator or asks in natural language to create a reusable template from a reference document, presentation, spreadsheet, ImageGen or Product Design image, email, or Slack message, or explicitly asks to edit or update…

rojim666/SztuCode · 82 tokens