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AntigravityManager: Skill for Claude Code

.agent/skills/openspec-ff-change/SKILL.md

openspec-ff-change is a skill for Claude Code, Codex from Draculabo/AntigravityManager. It costs 34 tokens per session (979 once invoked), scanned A, original, no licence file.

A skill that creates all OpenSpec documents needed for implementation in one pass. OpenSpec is a workflow for documenting planned code changes.

In plain words
What is it for?
Quickly preparing the planning artifacts for a code change.
Why use it?
It avoids creating and reviewing each planning document one at a time.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

This is Draculabo/AntigravityManager's own configuration. It tells Claude Code and Codex how to work on AntigravityManager 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 AntigravityManager configures →

not rated 2.5krepo +48 2d ago A scan SkillSpector: warn 34 tokens custom licence
View source ↗ Draculabo/AntigravityManager
Reuse

Borrowing it

Nothing to install: this file belongs to Draculabo/AntigravityManager. 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/Draculabo/AntigravityManager/main/.agent/skills/openspec-ff-change/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/Draculabo/AntigravityManager

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 openspec-ff-change

README.md
[![agentmods](https://agentmods.dev/badge/skills/draculabo/antigravitymanager/openspec-ff-change/github.svg)](https://agentmods.dev/skills/draculabo/antigravitymanager/openspec-ff-change)
Your own site
<a href="https://agentmods.dev/skills/draculabo/antigravitymanager/openspec-ff-change"><img src="https://agentmods.dev/badge/skills/draculabo/antigravitymanager/openspec-ff-change/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 openspec-ff-change

Your own site · 80×15
<a href="https://agentmods.dev/skills/draculabo/antigravitymanager/openspec-ff-change"><img src="https://agentmods.dev/badge/skills/draculabo/antigravitymanager/openspec-ff-change.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 979 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Memory Poisoning · line 74
    Skill manipulates agent memory, state, or stored context. Memory corruption can alter personality, override safety rules, or cause unpredictable behavior.
    Fix: Protect agent memory and state from modification by untrusted content. Use read-only memory for critical instructions and validate all state changes.
How audits are shown
Origin unknown No closer match found 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 $0.00034 $0.00979
Opus 5.5 $0.00014 $0.00392
Sonnet 5.5 $0.00007 $0.00196
Haiku 4.5 $0.00003 $0.00098

Measured 2mo ago against content hash e2df3f1fd6fc, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

openspec-ff-change 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 2mo 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.

.agent/skills/openspec-ff-change/SKILL.md · 109 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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. 2mo ago First seen · 109 lines · 34 tokens per session scan A e2df3f1fd6fc

Subscribe to this mod's changes

openspec-ff-change is a skill published in the GitHub repository Draculabo/AntigravityManager (2,469 stars, last pushed 2d ago), with no licence file. It adds 34 tokens to every session and 979 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-04.

Planningaccount-managerantigravityantigravity-aiantigravity-ideantigravity-toolselectron
Related

openspec-ff-change compared with skills from other repositories

openspec-ff-change next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
openspec-ff-changeDraculabo/AntigravityManagerSkill2.5k2d agononeA34Claude Code, Codex
looptaurus42119-stack/godkiller-mcpSkill3019d agoMITA28Claude Code, Codex
review-securitytaurus42119-stack/godkiller-mcpSkill3019d agoMITA12Claude Code, Codex
split-to-prstaurus42119-stack/godkiller-mcpSkill3019d agoMITA34Claude Code, Codex
babysittaurus42119-stack/godkiller-mcpSkill3019d agoMITA25Claude Code, Codex
reviewtaurus42119-stack/godkiller-mcpSkill3019d agoMITA15Claude Code
ag-sddstormlive-ai/ag-sddSkill43mo agoMITA78Claude Code, Codex