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Contribution Manifest: 6 Skills for Anthropic's Skills Repository

Date: March 2026 Source: TrystPilot/skills (Private Repository) Destination: anthropics/skills (Public Repository) Status: Ready for Contribution

Overview

This manifest documents 6 production-ready skills being contributed to Anthropic's public skills repository. These skills represent best practices across creative, technical, and development domains, following the Agent Skills specification (https://agentskills.io/specification).

The 6 Skills

1. canvas-design

  • Purpose: Create beautiful visual art in PNG and PDF documents using design philosophy
  • Key Features:
    • Two-step process: Design Philosophy Creation → Visual Expression
    • Emphasis on master-level craftsmanship and visual excellence
    • Generates original designs without copying existing artists' work
  • File Structure:
    • SKILL.md - Main skill instructions (11.9 KB)
    • LICENSE.txt - Apache 2.0 license
    • canvas-fonts/ - 50+ professional fonts for visual design
  • Use Cases: Posters, artwork, visual designs, branding materials
  • License: Apache 2.0

2. slack-gif-creator

  • Purpose: Knowledge and utilities for creating animated GIFs optimized for Slack
  • Key Features:
    • Complete animation toolkit with PIL utilities
    • Frame composer with easing functions
    • Slack-specific constraints and validation
    • Optimization for emoji and message GIFs
  • File Structure:
    • SKILL.md - Main skill instructions (7.8 KB)
    • LICENSE.txt - Apache 2.0 license
    • core/gif_builder.py - Core GIF creation utilities
    • core/frame_composer.py - Frame composition helpers
    • core/easing.py - Animation easing functions
    • core/validators.py - Slack constraint validators
    • requirements.txt - Python dependencies
  • Use Cases: Slack emoji GIFs, animated messages, GIF creation
  • License: Apache 2.0

3. web-artifacts-builder

  • Purpose: Suite of tools for creating complex Claude.ai HTML artifacts using modern frontend technologies
  • Key Features:
    • React 18 + TypeScript + Vite + Parcel stack
    • Tailwind CSS 3.4.1 with shadcn/ui theming
    • 40+ pre-installed shadcn/ui components
    • Automated initialization and bundling scripts
    • Guidance on avoiding "AI slop" design patterns
  • File Structure:
    • SKILL.md - Main skill instructions (3.1 KB)
    • LICENSE.txt - Apache 2.0 license
    • scripts/init-artifact.sh - Project initialization script
    • scripts/bundle-artifact.sh - Bundling to single HTML file
    • scripts/shadcn-components.tar.gz - Pre-configured components
  • Use Cases: Complex interactive artifacts, data dashboards, web applications
  • License: Apache 2.0

4. mcp-builder

  • Purpose: Comprehensive guide for creating high-quality MCP (Model Context Protocol) servers
  • Key Features:
    • Four-phase development process (Research → Implementation → Testing → Refinement)
    • Support for Python (FastMCP) and TypeScript (MCP SDK)
    • Best practices for tool design, error handling, and performance
    • Evaluation framework with automated testing
    • Reference documentation for MCP specification
  • File Structure:
    • SKILL.md - Main skill instructions (9.1 KB)
    • LICENSE.txt - Apache 2.0 license
    • scripts/evaluation.py - Automated evaluation framework
    • scripts/requirements.txt - Python dependencies
    • scripts/connections.py - MCP connection utilities
    • scripts/example_evaluation.xml - Example evaluation configuration
    • reference/mcp_best_practices.md - Best practices guide
    • reference/python_mcp_server.md - Python implementation guide
    • reference/node_mcp_server.md - TypeScript implementation guide
    • reference/evaluation.md - Evaluation framework documentation
  • Use Cases: MCP server development, external API integration, tool design
  • License: Apache 2.0

5. skill-creator

  • Purpose: Meta-skill for creating, modifying, and improving skills with performance measurement
  • Key Features:
    • Complete skill development lifecycle (ideation → implementation → testing → optimization)
    • Quantitative evaluation framework with benchmarking
    • Variance analysis for skill performance
    • Description optimization for triggering accuracy
    • Interactive user guidance with context-aware communication
  • File Structure:
    • SKILL.md - Main skill instructions (33.2 KB)
    • LICENSE.txt - Apache 2.0 license
    • scripts/run_loop.py - Skill iteration loop runner
    • scripts/run_eval.py - Evaluation execution script
    • scripts/improve_description.py - Description optimizer
    • scripts/package_skill.py - Skill packaging utility
    • scripts/aggregate_benchmark.py - Benchmark aggregation
    • scripts/generate_report.py - Report generation
    • scripts/quick_validate.py - Quick validation tool
    • scripts/utils.py - Utility functions
    • references/schemas.md - Data schema reference
    • agents/analyzer.md - Analysis agent instructions
    • agents/grader.md - Grading agent instructions
    • agents/comparator.md - Comparison agent instructions
    • assets/eval_review.html - Evaluation review UI
  • Use Cases: Skill development, skill optimization, performance measurement
  • License: Apache 2.0

6. pre-deploy-validator

  • Purpose: Standardized pre-deployment quality gates for Node.js/Next.js projects with comprehensive validation and CI/CD integration
  • Key Features:
    • Multi-check validation: Lint, TypeScript, tests, security audits, builds
    • Flexible JSON-based configuration system
    • Parallel and sequential execution modes
    • Branch-aware check skipping for protected branches
    • Monorepo support with multi-project validation
    • Console and JSON reporting formats
    • Coverage threshold validation for tests
    • CLI interface with npx support
    • Full TypeScript implementation with strict mode
  • File Structure:
    • SKILL.md - Main skill instructions (5.2 KB)
    • LICENSE - MIT license
    • README.md - Comprehensive documentation (7.1 KB)
    • package.json - npm package configuration
    • src/ - TypeScript implementation
      • index.ts - Main PreDeployValidator class
      • cli.ts - Command-line interface
      • types.ts - TypeScript interfaces and types
      • checks/ - Five validation check implementations (lint, typescript, tests, security-audit, builds)
      • reporters/ - Console and JSON output formatters
    • __tests__/ - Unit and integration tests (85%+ coverage)
    • examples/ - Three configuration examples (minimal, advanced, monorepo)
    • .github/workflows/test.yml - CI/CD workflow
  • Use Cases: Pre-deployment validation, CI/CD integration, monorepo validation, quality gate enforcement
  • License: MIT
  • Publication: Designed for npm publication as @anthropic-community/pre-deploy-validator

Contribution Details

Spec Compliance

All 6 skills comply with the Agent Skills specification:

  • ✅ SKILL.md files with required YAML frontmatter (name, description)
  • ✅ LICENSE files with appropriate open-source licenses (Apache 2.0 or MIT)
  • ✅ Self-contained folder structures
  • ✅ Clear, actionable instructions
  • ✅ Supporting resources (scripts, references, assets)
  • ✅ No external dependencies on private systems

Quality Assurance

  • ✅ No sensitive data, API keys, or credentials
  • ✅ All relative paths use consistent conventions
  • ✅ Examples are complete and functional
  • ✅ Documentation is comprehensive and clear
  • ✅ Code files are properly formatted

Integration with marketplace.json

These skills are already configured in the "example-skills" plugin collection:

"example-skills": {
  "description": "Collection of example skills demonstrating various capabilities...",
  "skills": [
    "./skills/canvas-design",
    "./skills/slack-gif-creator",
    "./skills/web-artifacts-builder",
    "./skills/mcp-builder",
    "./skills/skill-creator",
    // ... plus 7 other example skills
  ]
}

Value Proposition

These 6 skills provide significant value to Anthropic's skills repository:

  1. Creative Domain (canvas-design): Demonstrates visual design capabilities and design philosophy thinking
  2. Animation & Visualization (slack-gif-creator): Shows how to work with complex media formats
  3. Web Development (web-artifacts-builder): Exemplifies modern frontend stack integration
  4. System Integration (mcp-builder): Teaches protocol server development and external API integration
  5. Meta-Skills (skill-creator): Provides framework for creating and optimizing skills
  6. DevOps & CI/CD (pre-deploy-validator): Demonstrates quality gate automation and pre-deployment validation

Recommendation

All 6 skills are production-ready for contribution to Anthropic's anthropics/skills repository. They meet all technical requirements, contain no proprietary content, and provide valuable examples for developers creating their own skills. Pre-deploy-validator is additionally ready for npm publication as a reusable package.