Coding & Dev Tools

Write idiomatic C++ code with modern features, RAII, smart pointers, and STL algorithms. Handles templates, move semantics, and performance optimization.

Provides guidance and best practices for writing idiomatic Ruby code, covering metaprogramming, Rails patterns, gem development, performance optimization, and testing.

Build production-grade AI agents with LangGraph, covering graph construction, state management, reducers, conditional routing, checkpointers, and human-in-the-loop patterns.

Provides expert guidance on enterprise-grade Scala development, covering functional programming, distributed systems, and big data processing with frameworks like Pekko, Akka, Spark, ZIO, and Cats Effect.

Creates CodeTour .tour files with real file and line anchors for onboarding, architecture, PR, RCA, and security walkthroughs.

Build reusable Manim explainers for technical concepts, graphs, system diagrams, and product walkthroughs, then hand off to the wider ECC video stack if needed.

Provides JPA/Hibernate patterns for Spring Boot data modeling, including entity design, relationships, query optimization, transactions, auditing, indexing, pagination, and connection pooling.

Provides Rust testing patterns covering unit, integration, async, property-based tests, mocking, and coverage, following TDD methodology.

Guides writing idiomatic Rust with ownership, error handling, traits, concurrency, and best practices for safe, performant code.

Provides MySQL and MariaDB schema, query, indexing, transaction, replication, and connection-pool patterns for production backends.

Production patterns and non-obvious traps for Prisma ORM in TypeScript backends, covering schema design, query optimization, transactions, pagination, and serverless connection handling.

Provides backend architecture patterns, API design, database optimization, and server-side best practices for Node.js, Express, and Next.js API routes.

Provides production-grade Laravel architecture patterns covering controllers, services, actions, Eloquent models, routing, queues, events, caching, and API resources.

Creates production-grade p5.js sketches: generative art, interactive visualizations, 3D scenes, shaders, and audio-reactive visuals, with export to HTML, PNG, GIF, MP4, or SVG.

Runs throwaway experiments to validate feasibility, compare approaches, and surface unknowns before committing to a real build.

Delegate coding tasks to the OpenCode CLI, including one-shot runs, interactive sessions, and PR reviews.

Creates hand-drawn style Excalidraw diagrams as JSON files for architecture, flow, and sequence diagrams, with optional upload for shareable links.

Converts video, audio, or images into colored ASCII art videos (MP4/GIF) with generative effects, audio-reactive visuals, and text overlays.

Delegate coding tasks to xAI's Grok Build CLI, covering headless and interactive modes, PR reviews, and session management.

Runs three parallel reviewer agents over recent code changes, aggregates their findings, and applies the fixes worth applying.

Generate video clips with Google Veo (Veo 3.1 / 3.0) via a Python script, supporting duration, aspect ratio, and model selection.

Design and implement Oban background job workers for Elixir, covering queue configuration, retries, uniqueness, cron scheduling, and testing.

Translates between Figma designs and Vue 3 + shadcn-vue code, mapping Auto Layout to Tailwind, extracting design tokens, and pushing components back to Figma via MCP.

Analyzes an existing Vue project's UI to map components, extract design tokens, and identify code patterns, then generates a project-specific contextual skill file for consistent future development.

Reviews code diffs or explicit file sets through independent correctness and QA lenses, producing a severity-ordered verdict for pre-merge audits or review gates.

Analyzes a completed phase diff for high-confidence behavior-preserving simplifications and applies only explicitly approved proposals, reducing duplication, dead code, needless complexity, or avoidable inefficiency.

Guides minimal-diff code changes by defining contracts and invariants, choosing a stable seam, and proving the result with an executed check.

Rebuilds working context after a session clear by reading git history, plans, and beads issue state, then produces a visible briefing.

Extracts a language-agnostic ghost package (spec, tests, install and verify docs) from an existing repository, preserving behavior via tests.yaml and evidence bundles.

Refactors duplicated code by extracting helper methods, shared abstractions, or reusable structures, with automated testing and commits after each extraction.

Analyzes a class or module for code smells and produces a prioritized refactoring plan with phases, success criteria, and risk mitigation.

Guides adding characterization tests before modifying or refactoring untested legacy code, using the RGR workflow and strangler fig pattern to reduce risk.

Analyzes code to separate essential complexity from incidental noise, then produces a ranked refactoring plan with a structural sketch and TRACE assessment, without making edits.

Guides the creation of high-quality MCP servers, covering design, implementation, testing, and evaluation for integrating external services with LLMs.

Tests local web applications with Playwright, including server lifecycle management, DOM inspection, and screenshot capture.

Provides best practices for building performant React Native and Expo apps, covering list performance, animations, navigation, UI patterns, state management, rendering, monorepo structure, and configuration.