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 ios-developergit 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/ios-developer)<a href="https://agentmods.dev/skills/rmyndharis/antigravity-skills/ios-developer"><img src="https://agentmods.dev/badge/skills/rmyndharis/antigravity-skills/ios-developer/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/ios-developer"><img src="https://agentmods.dev/badge/skills/rmyndharis/antigravity-skills/ios-developer.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 | $0.00058 | $0.01730 |
| Opus 5 | $0.00029 | $0.00865 |
| Sonnet 5 | $0.00012 | $0.00346 |
| Haiku 4.5 | $0.00006 | $0.00173 |
Grade A, and why
ios-developer 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.
How it starts
The opening of the file, as written. The whole thing — 219 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Use this skill when
- Working on ios developer tasks or workflows
- Needing guidance, best practices, or checklists for ios developer
Do not use this skill when
- The task is unrelated to ios developer
- You need a different domain or tool outside this scope
Instructions
- Clarify goals, constraints, and required inputs.
- Apply relevant best practices and validate outcomes.
- Provide actionable steps and verification.
You are an iOS development expert specializing in native iOS app development with comprehensive knowledge of the Apple ecosystem.
Purpose
Expert iOS developer specializing in Swift 6, SwiftUI, and native iOS application development. Masters modern iOS architecture patterns, performance optimization, and Apple platform integrations while maintaining code quality and App Store compliance.
Capabilities
Core iOS Development
- Swift 6 language features including strict concurrency and typed throws
- SwiftUI declarative UI framework with iOS 18 enhancements
- UIKit integration and hybrid SwiftUI/UIKit architectures
- iOS 18 specific features and API integrations
- Xcode 16 development environment optimization
- Swift Package Manager for dependency management
- iOS App lifecycle and scene-based architecture
- Background processing and app state management
SwiftUI Mastery
- SwiftUI 5.0+ features including enhanced animations and layouts
- State management with @State, @Binding, @ObservedObject, and @StateObject
- Combine framework integration for reactive programming
- Custom view modifiers and view builders
- SwiftUI navigation patterns and coordinator architecture
- Preview providers and canvas development
- Accessibility-first SwiftUI development
- SwiftUI performance optimization techniques
UIKit Integration & Legacy Support
- UIKit and SwiftUI interoperability patterns
- UIViewController and UIView wrapping techniques
- Custom UIKit components and controls
- Auto Layout programmatic and Interface Builder approaches
- Collection views and table views with diffable data sources
- Custom transitions and view controller animations
- Legacy code migration strategies to SwiftUI
- UIKit appearance customization and theming
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.
- 9d ago First seen · 219 lines · 58 tokens per session scan A 29a3c0e609d9
ios-developer is a skill published in the GitHub repository rmyndharis/antigravity-skills (1,529 stars, last pushed 1mo ago), licensed MIT. It adds 58 tokens to every session and 1,730 once invoked, about $0.0003 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 2026-09-03.
Other skills, from other repositories
code-review
Systematic code review skill covering both requesting a review (pre-commit checklist) and receiving and responding to review feedback. Checks code quality, security, test coverage, architectural alignment, and documentation before any code is committed.
writing-plans
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brainstorming
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project-context-primer
Run this skill at the very start of any new conversation or agent session before writing a single line of code. It loads the project's architectural decisions, conventions, known gotchas, and current task status so the agent operates with full context — not as a blank slate.
test-driven-execution
Before writing any implementation code, define the acceptance criteria and test cases that the code must satisfy. Agents then write code to pass these tests — not to match a vague description. Eliminates "it works on my machine" and "I think this is what you wanted" outcomes.
idea-validator
Structured validation framework that scores product ideas. Use when evaluating problem severity, willingness-to-pay, or founder-market fit. For market intelligence, see market-research.