alexandru-skills

Plugin alexandru-skills from marketplace alexandru in alexandru/skills. Commands read from the repo's manifest — 12 days ago.

Skills (18)

• akka-streams

  Scala reactive streaming with Akka Streams and Pekko Streams. Use for dataflow and reactive programming patterns, testing stream components, and understanding when NOT to use streams (prefer plain functions for transformations and I/O).

• arrow-resource

  Kotlin + Arrow Resource lifecycle discipline with `Resource`, `ResourceScope`, `resourceScope`, and context parameters. Use for safe acquisition/release of files, streams, DB pools/connections, HTTP clients, background scopes, or multipart parts; preventing resource leaks and use-after-close bugs; d

• arrow-typed-errors

  Models Kotlin logical failures with Arrow's context-parameter Raise DSL and wrappers such as Either, nullable, Option, and Ior. Use when implementing or simplifying typed-error flows, translating error types, replacing verbose Either handling, validating input with accumulation, or selecting an erro

• cats-effect-io

  Helps agents write and review Scala Cats Effect IO code. Use for suspending side effects and non-determinism in IO or F[_], choosing Sync/Async/Temporal/Concurrent/Clock/Random, handling blocking I/O, testing with TestControl, and composing resources, fibers, races, and structured concurrency safely

• cats-effect-resource

  Helps agents write and review Scala Cats Effect Resource code. Use for preventing resource leaks and use-after-release bugs, modeling disposable values with Resource, designing Resource-returning factories and constructor-injected services, wrapping Java AutoCloseable values, composing resources, an

• cats-mtl-typed-errors

  Scala typed errors with Cats MTL Raise/Handle and allow/rescue. Use for designing custom domain error types without EitherT, while keeping Cats Effect and ecosystem composition. Covers Scala 2/3 syntax and IO-only or F[_] usage.

• compose-state-hoisting

  Compose state management with a strong state-hoisting preference for Kotlin Compose (Android, Multiplatform, Compose for Web). Use for refactors or new UI that needs clear state ownership, unidirectional data flow, saved state decisions, or guidance on remember/retain/rememberSaveable/rememberSerial

• jspecify-nullness

  JSpecify nullness annotations for Java APIs and tooling. Use when adopting or migrating JSpecify annotations, designing null-safe Java signatures, fixing generic bounds and type-use placement, or interpreting Kotlin interop, annotation-processor, and tool-conformance behavior.

• kotlin-context-parameters

  Kotlin context parameters (`context(...)`) for scoped dependencies, DSL scopes, and migrations from context receivers. Use when designing, reviewing, or refactoring Kotlin code that uses implicit contextual values.

• kotlin-java-library

  Helps agents design and review Kotlin library APIs for Java consumers. Use when building Kotlin code intended for Java callers, shaping JVM signatures with @JvmName, @JvmOverloads, @JvmStatic, @JvmField, @Throws, @JvmRecord, nullability, records, and backward/binary compatibility rules.

• scala-kindlings-derivation

  Scala auto-derivation with Kindlings for Circe and PureConfig. Use when replacing circe-generic/circe-generic-extras or PureConfig generic derivation with Kindlings while keeping normal Circe JSON APIs and PureConfig loading/writing APIs.

• code-refine

  Refines code through the three lenses in `code-refinements` with verified, behavior-preserving edits. Use when the user asks to refine a scope of code, such as a module, a directory, or the changes on a branch.

• code-refinements

  Defines what refined code looks like through the three lenses of constraints, simplicity, and parametricity, with rules for type proofs, no partial calls, explicit signatures, unrepresentable wrong states, hot-path discipline, and style. Use when writing, changing, or reviewing code to a refinement

• code-review

  Reviews changed code using the shared code-reviewing workflow.

• code-reviewing

  Reviews code changes for bugs, structural problems, performance issues, and unintended behavior. Use when reviewing uncommitted changes, commits, branches, or pull requests.

• create-skill

  Guide for creating effective agent skills. Use when users want to create a new skill (or update an existing skill) that extends agent capabilities with specialized knowledge, workflows, or tool integrations.

• external-research

  Researches evidence unavailable locally: external documentation, public repositories at specific refs, archives, and published dependency artifacts (JARs, source JARs, POMs, dependency graphs), reusing a persistent cache of Git clones and Maven artifacts. Use for library docs, upstream source and hi

• mcp-access

  Calls MCP (Model Context Protocol) servers when native MCP tools are unavailable or unsupported, using the MCP Inspector connection CLI or a manual JSON-RPC fallback specification. Use for listing and calling tools over stdio or HTTP, retaining state across calls, and diagnosing MCP connectivity.

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