stitch-skills: Google's Agent Skills for the Stitch MCP Ecosystem

Overview

stitch-skills (6,584 stars, by google-labs-code) is Google's library of agent skills purpose-built for the Stitch MCP server ecosystem. Compatible with multiple coding agents including Antigravity, Gemini CLI, Claude Code, and Cursor, these declarative skill definitions represent Google's strategic entry into the cross-platform agent skills space.

stitch-skills signals that MCP and skills are becoming infrastructure layers that major tech companies invest in. The fact that it works across multiple agent platforms demonstrates the industry's commitment to interoperable agent skills rather than proprietary formats.

Features

• Stitch MCP integration: Skills are purpose-built for Google's Stitch MCP server architecture
• Multi-agent compatibility: Works with Antigravity, Gemini CLI, Claude Code, Cursor, and more
• Enterprise focus: Skills target production-grade development workflows
• Declarative definitions: Skills defined in a structured, composable, and easy-to-version format

Installation

# Via Stitch MCP server configuration
git clone https://github.com/google-labs-code/stitch-skills
cp -r stitch-skills/* ~/.claude/skills/

Or configure directly through the Stitch MCP server's skill management system.

Available Skills

stitch-skills includes skills organized for modern development workflows:

• Code generation and review — structured code generation patterns with review checklists
• Testing strategies — comprehensive testing approaches for different architectures
• API design — REST and GraphQL API design patterns
• Documentation — automated documentation generation and maintenance

Why It Matters

Google's entry into the agent skills space is a major validation of the skills as infrastructure thesis. Key implications:

1. Standardization: Google's participation suggests industry-wide skill format standards are emerging
2. Cross-platform: stitch-skills works with non-Google agents, proving the interoperability model works
3. Enterprise credibility: Google backing gives enterprises confidence to invest in the skill ecosystem
4. MCP integration: Deep integration with the Stitch MCP server demonstrates how skills and MCP complement each other

Pros

• ✅ Google-backed with enterprise-level quality assurance
• ✅ Cross-platform compatibility across multiple coding agents
• ✅ Declarative format for easy composition and versioning
• ✅ Part of the growing Stitch MCP ecosystem

Cons

• ❌ Requires Stitch MCP server for full functionality
• ❌ Smaller ecosystem compared to superpowers or other skill collections
• ❌ Relatively new with limited community contributions

When to Use

Use stitch-skills when:

• You're using the Stitch MCP server in your development workflow
• You want Google-curated skill quality for your agents
• You need skills that work across multiple agent platforms
• You're building enterprise applications and want Google-backed tooling

Resources

• GitHub Repository