Write Scala code with functional programming patterns, leverage advanced type system features like variance and type classes, and use the Metals language server for diagnostics, navigation, and symbol analysis in .scala and .sbt files.
Use when scala collections including immutable/mutable variants, List, Vector, Set, Map operations, collection transformations, lazy evaluation with views, parallel collections, and custom collection builders for efficient data processing.
Use when functional programming patterns in Scala including higher-order functions, immutability, pattern matching, algebraic data types, monads, for-comprehensions, and functional composition for building robust, type-safe applications.
Use when scala's advanced type system including generics, variance, type bounds, implicit conversions, type classes, higher-kinded types, path-dependent types, and abstract type members for building type-safe, flexible APIs.
Ship-ready code from your AI coding agent. 139+ plugins for quality gates, tooling, memory, and specialized agents — so your AI writes code that's ready to merge.
Two commands. That's it.
# 1. Install the CLI
curl -fsSL https://han.guru/install.sh | bash
# 2. Auto-detect and install plugins for your project
han plugin install --auto
Next time you use Claude Code, validation hooks run automatically when you finish a conversation.
# Homebrew (macOS/Linux)
brew install thebushidocollective/tap/han
139 plugins across six categories:
| Category | Description | Examples |
|---|---|---|
| Core | Essential infrastructure. Auto-installs han binary, provides metrics and MCP servers | Always required |
| Languages | Validation plugins for your language/runtime | TypeScript, Rust, Python, Go, Ruby |
| Validation | Linters, formatters, and quality tools | Biome, ESLint, ShellCheck, Pytest |
| Disciplines | Specialized AI agents for engineering domains | Security, accessibility, API design, architecture |
| Services | MCP servers for external platforms | GitHub, GitLab, Linear |
| Tools | MCP servers for development utilities | Playwright, Blueprints, Context7 |
Browse all plugins at han.guru/plugins
--auto flag detects your stack automatically# Install plugins
han plugin install # Interactive mode
han plugin install --auto # Auto-detect your stack
han plugin install <name> # Install specific plugin
# Manage plugins
han plugin search <query> # Search marketplace
han plugin uninstall <name> # Remove plugin
# Run hooks manually
han hook run <plugin> <hook> # Run a specific hook
han hook explain # Show configured hooks
# MCP server
han mcp # Start MCP server for natural language hook execution
Full documentation at han.guru/docs
See CONTRIBUTING.md for how to create new plugins.
MIT License - see LICENSE
Built by The Bushido Collective
Modifies files
Hook triggers on file write and edit operations
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Sign in to claimnpx claudepluginhub thebushidocollective/han --plugin scalaBased on adoption, maintenance, documentation, and repository signals. Not a security audit or endorsement.
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Lazy senior dev mode. Forces the simplest, shortest solution that actually works: YAGNI, stdlib first, no unrequested abstractions.
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Production-grade engineering skills for AI coding agents — covering the full software development lifecycle from spec to ship.
Permanent coding companion for Claude Code — survives any update. MCP-based terminal pet with ASCII art, stats, reactions, and personality.