Skills Repository

This is a collection of skills for use with AI Agents. See:

• Claude Skills
• Copilot Agent Skills

Part of alexandru/agents-config.

Usage

npx skills add https://github.com/alexandru/skills --skill 

Skills

• akka-streams: Akka Streams and Pekko Streams reactive streaming patterns and testing
• arrow-resource: Arrow Resource lifecycle discipline, context-parameter builders, and arrow-autoclose fallback patterns
• arrow-typed-errors: Context-parameter Raise DSL, efficient Either composition, and validation guidance
• cats-effect-resource: Cats Effect Resource leak prevention, factory, lifecycle, and Java interop guidance
• cats-effect-io: Cats Effect IO side-effect suspension, typeclass, testing, fiber, and race guidance
• cats-mtl-typed-errors: Scala typed errors using Cats MTL Raise/Handle and allow/rescue
• compose-state-hoisting: Compose state hoisting and state ownership guidance
• code-review: User-invoked adapter for code-reviewing
• code-reviewing: Review changed code for bugs, structural problems, performance issues, and unintended behavior
• create-skill: Guide for creating effective agent skills
• jspecify-nullness: JSpecify nullness annotations for Java APIs and tooling
• kotlin-context-parameters: Kotlin context parameter syntax, patterns, and migration guidance
• kotlin-java-library: Kotlin library API design for Java consumers, JVM annotations, records, and compatibility
• mcp-access: Call MCP servers when native MCP tools are unavailable or restricted: inspector CLI fallback, then raw JSON-RPC over stdio or HTTP
• refine: User-invoked refinement of a scope in rounds until they converge, using refinements (source)
• refinements: What refined code looks like: the three lenses plus rules for type proofs, no partial calls, explicit signatures, unrepresentable wrong states, and hot paths (source)
• scala-kindlings-derivation: Scala Kindlings auto-derivation for Circe and PureConfig instances

Testing

Each skill’s references include guidance for representative requests. Skill-specific examples are type-checked by bundled scripts/verify-examples.* files inside each skill directory. Root templates/ files include Kotlin, Scala, and Java harness templates only and are not referenced by installed skills.

License

MIT