Cloudflare Workers Multi Lang

When JavaScript isn't fast enough or you need specific language features, this skill shows you how to build Cloudflare Workers with Rust, Python, or WebAssembly. It includes setup for Rust with wasm-pack, Python workers configuration, and WASM module integration patterns. The language comparison table is helpful for deciding when to reach for compiled languages (Rust wins on CPU-intensive tasks like crypto or image processing, Python for data work). The error troubleshooting section covers the usual WASM gotchas like version mismatches and memory limits. Most projects won't need this complexity, but when you're hitting performance walls or need language-specific libraries, it gets you building with minimal fumbling.

skills.sh installs: 310
GitHub stars: 248
last updated: Aug 21, 2026

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Install

$ npx -y skills add secondsky/claude-skills --skill cloudflare-workers-multi-lang --agent claude-code

Installs into .claude/skills of the current project.

Files

Multi-Language Workers Development

Build Cloudflare Workers using Rust, Python, or WebAssembly for performance-critical operations.

Language Comparison

Feature	JavaScript/TS	Rust	Python
Startup	Fast	Fastest (WASM)	Moderate
CPU Perf	Good	Excellent	Good
Memory	Higher	Lower	Higher
Bundle Size	Smaller	Medium	Larger
Type Safety	Optional (TS)	Strict	Optional
Best For	General apps	CPU-intensive	Data/ML

Quick Decision

Need maximum performance? → Rust/WASM
Heavy computation (crypto, image processing)? → Rust/WASM
Data processing, ML inference? → Python
General web apps? → JavaScript/TypeScript