Antigravity Agent Skills System

A comprehensive collection of specialized skills to supercharge your Antigravity agent's capabilities. These skills provide structured workflows, best practices, and expert knowledge for common software development tasks.

Inspired by Superpowers and Claude Code Plugins.

Overview

The Skills System allows your agent to adopt specific personas and methodologies. Instead of guessing, the agent follows proven patterns for planning, debugging, designing, and optimizing.

Available Skills

🚀 Core Workflow

• planning: Creates comprehensive, bite-sized implementation plans. Use this before writing code to ensure complex tasks are broken down effectively.
• writing-plans: Write comprehensive implementation plans with bite-sized tasks for engineers.
• executing-plans: Execute written implementation plans in batches with review checkpoints.
• finishing-a-development-branch: Complete development work with structured merge/PR/cleanup options.
• verification-before-completion: Evidence before claims - verify tests/builds before completion claims.
• brainstorming: Facilitates collaborative design sessions. Use this to refine ideas into specifications before implementation.
• creating-skills (Gemini Skill Creator): The meta-skill for building new skills. Follows the standardized structure and best practices for extending this system.

🏗️ Architecture & Backend

• backend-security-coder: Expert in secure backend coding practices (Input validation, Auth, API security).
• architect-review: Master architect for reviewing system designs, code changes, and architectural integrity.
• graphql-architect: Master GraphQL with federation, performance, and enterprise security.
• arm-cortex-expert: Senior embedded engineer for ARM Cortex-M firmware and drivers.
• blockchain-developer: Build Web3 apps, smart contracts, DeFi protocols, and NFT platforms.
• database-architect: Expert in database design, technology selection, and scalable architectures.
• postgresql-table-design: Specialist in PostgreSQL schema design, types, and constraints.
• payment-integration: Integrate Stripe, PayPal, handling checkout, subscriptions, and compliance.
• billing-automation: Build automated billing systems for recurring payments, invoicing, and subscription lifecycle.
• paypal-integration: Integrate PayPal payment processing with support for express checkout, subscriptions, and refunds.
• stripe-integration: Implement Stripe payment processing for robust, PCI-compliant payment flows.

🎨 Design & Frontend

• frontend-developer: React & Next.js expert. Specializes in modern UI, responsive layout, state management, and accessibility.
• ui-designer: Expert in UI components, layout systems, and visual design implementation.
• brand-identity: Your guide to brand guidelines, design tokens, and voice.
• design-system-architect: Expert in design tokens, component libraries, and theming infrastructure.
• accessibility-expert: WCAG compliance, inclusivity, and assistive technology expert.
• mobile-developer: Develop React Native, Flutter, or native mobile apps with modern architecture.
• unity-developer: Build Unity games with optimized C# scripts, efficient rendering, and proper asset management.
• javascript-pro: Master modern JavaScript with ES6+, async patterns, and Node.js optimization.
• typescript-pro: Master TypeScript with advanced types, generics, and strict type safety.

🛠️ Maintenance & Modernization

• code-refactoring: Refactor legacy codebases, migrate frameworks, and reduce technical debt.

🛡️ Quality Assurance & Security

• debugger: First responder for any error, test failure, or unexpected behavior.
• systematic-debugging: Use when encountering bugs - systematic root cause investigation before fixes.
• debugging-strategies: Master systematic debugging techniques and root cause analysis.
  • Scientific method application (Hypothesize → Experiment → Analyze).
  • Language-specific debugging tools (JS/TS, Python, Go).
  • Advanced techniques like binary search and differential debugging.
• error-handling-patterns: Best practices for writing resilient code. Covers exception handling, Result types, and error propagation patterns.
• code-reviewer: Review code for best practices, security, and maintainability.
• backend-security-coder: Implement secure coding practices for backend systems.
• frontend-security-coder: Expert in XSS prevention, output sanitization, and secure client-side coding.
• mobile-security-coder: Expert in secure mobile coding practices, WebView security, and mobile security patterns.
• pci-compliance: Implement PCI DSS compliance requirements for secure handling of payment card data.
• test-automator: Master AI-powered test automation, self-healing tests, and comprehensive quality engineering.
• e2e-testing-patterns: Master E2E testing with Playwright and Cypress for reliable test suites.
• test-driven-development: Use when implementing features/bugfixes - write tests first, watch fail, then code.
• security-auditor: Expert in DevSecOps, compliance, and cybersecurity auditing.

⚡ Operations & Reliability

• cloud-architect: Expert cloud architect for AWS/Azure/GCP, IaC, FinOps, and multi-cloud strategies.
• devops-troubleshooter: Expert incident response, debugging, and observability specialist.
• kubernetes-architect: Expert K8s architect for cloud-native, GitOps, and platform engineering.
• terraform-specialist: Expert Terraform/OpenTofu for advanced IaC and state management.
• hybrid-cloud-architect: Expert hybrid/multi-cloud for AWS/Azure/GCP/OpenStack integration.
• network-engineer: Expert cloud networking, security, SSL/TLS, and performance optimization.
• observability-engineer: Expert in production monitoring, logging, tracing, and incident response metrics (SLIs/SLOs).
• database-admin: Expert in cloud database operations, automation, and reliability.
• deployment-engineer: Expert in modern CI/CD pipelines, GitOps, and zero-downtime deployments.

📣 Communication & Strategy

• data-storytelling: Transform complex data into compelling narratives and visualizations.
• startup-analyst: Expert startup business analyst for market sizing, financial modeling, and strategic planning.
• competitive-landscape: Competitor analysis, differentiation, and Porter's Five Forces frameworks.
• market-sizing-analysis: TAM/SAM/SOM calculations and market opportunity analysis.
• startup-financial-modeling: Create 3-5 year financial projections, revenue forecasts, and burn rate analysis.
• startup-metrics-framework: Track and optimize key startup metrics (CAC, LTV, Burn, Rule of 40).
• team-composition-analysis: Hiring plans, org charts, compensation, and equity planning.
• security-auditor: DevSecOps, compliance, and cybersecurity audit expert.
• kpi-dashboard-design: Design effective KPI dashboards with metrics selection, visualization best practices, and real-time monitoring patterns.
• business-analyst: Master modern business analysis with AI-powered analytics, predictive models, and strategic recommendations.
• docs-architect: Create comprehensive technical documentation, manuals, and architecture guides.
• api-documenter: Master API documentation with OpenAPI 3.1, AI tools, and interactive portals.
• tutorial-engineer: Create step-by-step tutorials and educational content from code.
• content-marketer: Elite content strategist for AI-powered creation, SEO, and omnichannel distribution.
• seo-content-auditor: Analyzes content for quality, E-E-A-T, and SEO best practices.
• seo-content-planner: Creates comprehensive content outlines and topic clusters for SEO.
• seo-content-writer: Writes SEO-optimized content based on brief and keywords.
• seo-authority-builder: Analyzes E-E-A-T signals and builds authority/trust.
• seo-cannibalization-detector: Detects keyword overlap and cannibalization issues.
• seo-content-refresher: Identifies outdated content elements and suggests updates.
• seo-keyword-strategist: Analyzes keyword usage, density, and LSI opportunities.
• seo-meta-optimizer: Creates optimized meta titles, descriptions, and URLs.
• seo-snippet-hunter: Formats content for featured snippets and SERP features.
• seo-structure-architect: Optimizes content structure, headers, schema, and internal links.
• customer-support: Elite AI-powered support specialist for omnichannel CX and support automation.
• sales-automator: Create cold email sequences, proposals, and sales scripts.

🧪 Workflow & Collaborationgineering

• context-manager: AI context engineering specialist. Masters vector DBs, RAG, knowledge graphs, and multi-agent context orchestration.
• dx-optimizer: Improve developer experience, tooling, and async collaboration workflows.

⚡ Performance

• performance-engineer: Optimize applications and infrastructure for speed and scalability.
• sql-optimization-patterns: Expert in optimizing SQL queries and database performance.
• sql-pro: Master modern SQL, cloud-native DBs, and advanced query optimization. Use this for:
  • Analyzing EXPLAIN plans.
  • Designing efficient indexes.
  • Resolving N+1 query problems.
  • Optimizing database interactions.
• database-optimizer: Expert in modern database tuning, query optimization, indexing, caching, and scalable architectures.
• c-pro: Write efficient C code with proper memory management and system calls.
• cpp-pro: Write idiomatic C++ with modern features, RAII, and STL.
• golang-pro: Master Go 1.21+ with modern patterns, advanced concurrency, and performance optimization.
• rust-pro: Master Rust 1.75+ with modern async patterns, advanced type system, and performance.
• php-pro: Write idiomatic PHP code with generators, iterators, and SPL data structures.
• ruby-pro: Write idiomatic Ruby code with metaprogramming, Rails patterns, and performance optimization.

How to Use

Simply ask your agent to use a specific skill. The agent has access to all skills in the .agent/skills/ directory.

Examples:

"Use the planning skill to create an implementation plan for the user authentication feature."

"I have a slow query. Use the sql-optimization-patterns skill to help me analyze it."

"Review my latest changes using the code-reviewer skill."

Architecture

Each skill is a self-contained directory in .agent/skills/<skill-name>/ containing:

• SKILL.md: The core instructions and prompt engineering for the agent.
• resources/ (Optional): JSON files, templates, or markdown guides specific to that skill.
• scripts/ (Optional): Helper scripts for the skill.

Contributing

To create a new skill, use the Gemini Skill Creator:

1. Ask the agent: "I want to create a new skill for [topic]."
2. The agent will use the creating-skills skill to guide you through generating the directory structure and SKILL.md.

Credits

This system is heavily inspired by and adapted from:

• Superpowers by Jesse Vincent
• Claude Code Agents by wshobson