Antigravity Skill Vault is a collection of reusable Agent Skills for Google Antigravity, covering software development, operations, security, and business work. It is for people who want Antigravity agents to follow specialized expertise, personas, and structured workflows. The catalogue skills are entries from this collection.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add rmyndharis/antigravity-skills --skill changelog-automationgit clone --depth 1 https://github.com/rmyndharis/antigravity-skillsWrote 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.
[](https://agentmods.dev/skills/rmyndharis/antigravity-skills/changelog-automation)<a href="https://agentmods.dev/skills/rmyndharis/antigravity-skills/changelog-automation"><img src="https://agentmods.dev/badge/skills/rmyndharis/antigravity-skills/changelog-automation/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.
<a href="https://agentmods.dev/skills/rmyndharis/antigravity-skills/changelog-automation"><img src="https://agentmods.dev/badge/skills/rmyndharis/antigravity-skills/changelog-automation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00042 | $0.00245 |
| Opus 5 | $0.00021 | $0.00122 |
| Sonnet 5 | $0.00008 | $0.00049 |
| Haiku 4.5 | $0.00004 | $0.00024 |
Grade A, and why
changelog-automation 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 13d 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.
Copies of this mod
2 near-identical copies found in the catalogue:
- changelog-automation — 100% identical, 0 lines differ
- changelog-automation — 94% identical, 5 lines differ
What it actually says
Changelog Automation
Patterns and tools for automating changelog generation, release notes, and version management following industry standards.
Use this skill when
- Setting up automated changelog generation
- Implementing conventional commits
- Creating release note workflows
- Standardizing commit message formats
- Managing semantic versioning
Do not use this skill when
- The project has no release process or versioning
- You only need a one-time manual release note
- Commit history is unavailable or unreliable
Instructions
- Select a changelog format and versioning strategy.
- Enforce commit conventions or labeling rules.
- Configure tooling to generate and publish notes.
- Review output for accuracy, completeness, and wording.
- If detailed examples are required, open
resources/implementation-playbook.md.
Safety
- Avoid exposing secrets or internal-only details in release notes.
Resources
resources/implementation-playbook.mdfor detailed patterns, templates, and examples.
What ships with it
1 file 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.
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.
- 13d ago First seen · 39 lines · 42 tokens per session scan A 868029cc6c66
changelog-automation is a skill published in the GitHub repository rmyndharis/antigravity-skills (1,529 stars, last pushed 1mo ago), licensed MIT. It adds 42 tokens to every session and 245 once invoked, about $0.0002 per session on Opus 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 2026-08-30.
Other skills, from other repositories
changelog
Generates and maintains changelogs following Keep a Changelog format. Use when updating release notes, finishing tasks, or tagging versions. For version bumps, see semantic-versioning.
semantic-versioning
Manages project versioning following Semantic Versioning (SemVer) principles. Calculates increments based on changes and synchronizes version across documentation and metadata. Use when the user asks to "bump the version", "prepare a release", or when the changelog skill calls for a release.
ios-appstore-builder
Prepare, configure, and publish iOS apps to the Apple App Store. Covers certificates, provisioning profiles, TestFlight, App Store submission, and review guidelines.
app-release-manager
Manage the complete mobile app release lifecycle from versioning to store submission.
changelog-automator
Professional Changelog Automator Expert skill. Improve code delivery speed and developer workflows through automation and modern tooling.
changelog-generator
Professional Changelog Generator Expert skill. Improve code delivery speed and developer workflows through automation and modern tooling.