By LerianStudio
Enforce TDD discipline, structured git workflow, and parallel multi-reviewer code reviews using a curated skill library that orchestrates multi-agent workflows, production readiness audits, and automated code quality checks.
Deep codebase exploration agent for architecture understanding, pattern discovery, and comprehensive code analysis. Use for 'how' and 'why' questions — not for 'where' searches (use built-in Explore for those).
Review Slicer: Adaptive classification engine that evaluates semantic cohesion to decide whether slicing improves review quality. Sits between Mithril pre-analysis and reviewer dispatch. Classification-only — does NOT read source code.
Analyzing different approaches for a task or problem with structured comparisons, effort estimates, and recommendations. Use when facing strategic decisions, architecture choices, or multiple viable approaches. Skip when there's an obvious single approach or the decision is already made.
Auditing a service's production readiness against Ring engineering standards across base dimensions plus a conditional multi-tenant dimension, then emitting a scored report and an HTML dashboard. Use before production deploy, periodic review, onboarding, or a major release. Skip for prototypes, libraries, or single-dimension checks.
Cleaning redundant and obvious comments following clean code principles while preserving meaningful documentation. Supports git scope filtering (staged, unstaged, branch, commit-range). Use when code has excessive comments, during code review, or post-refactor cleanup. Skip when reviewing documentation files or comments are already minimal.
Commit changes with scope allowlist enforcement, atomic grouping, GPG-signed conventional commits, and trailer management. Detects the repo's PR-validation scope policy before proposing any message. Use when the user asks to commit or has changes ready to record. Skip when the working tree is clean or the user wants raw git commands without grouping.
Creating a handoff document that captures session state (completed work, decisions, open items, next steps) and delivering it via Plan Mode so the user gets the native 'clear context and continue implementing' resume option. Use when ending a session, when context grows large, or the user says 'handoff', 'save session', or 'context transfer'. Skip when context is minimal or work is fully complete with no resume planned.
Uses power tools
Uses Bash, Write, or Edit tools
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Proven engineering practices, enforced through skills.
Ring is a comprehensive skills library and workflow system for AI agents that transforms how AI assistants approach software development. Currently implemented as a Claude Code plugin marketplace with 4 active plugins, 76 skills, and 33 agents (see .claude-plugin/marketplace.json for current versions), the skills themselves are agent-agnostic and can be used with any AI agent system. Ring provides battle-tested patterns, mandatory workflows, and systematic approaches across the entire software delivery value chain.
Without Ring, AI assistants often:
Ring solves this by:
Ring is Lerian-first, open-source-friendly. Design decisions prioritize the Lerian engineering team's daily needs while keeping the architecture clean and reusable for external adoption. This means:
Planning & Analysis Agents (default plugin):
ring:review-slicer - Review slicer (groups large multi-themed PRs into thematic slices for focused parallel review)ring:codebase-explorer - Deep architecture analysis (deep-analysis, complements built-in Explore)ring:reviewing-code skill to orchestrate parallel review workflowDeveloper Agents (dev-team plugin):
ring:backend-go - Go backend specialist for financial systemsring:backend-ts - TypeScript/Node.js backend specialist (Express, NestJS, Fastify)ring:bff-ts - BFF & React/Next.js frontend with Clean Architecturering:ui-designer - Visual design specialistring:frontend - Senior Frontend Engineer (React/Next.js)ring:devops - DevOps and infrastructure specialistring:prompt-reviewer - Agent Quality Analystring:qa - Backend QA specialist (unit, integration, load, chaos)ring:qa-frontend - Frontend QA specialist (accessibility, visual, E2E, performance)ring:sre - Observability and reliability specialistring:ui-engineer - UI component specialist (design systems, accessibility)ring:helm - Helm chart specialist (chart structure, security, Lerian conventions)ring:code-reviewer - Foundation review (architecture, code quality, design patterns)ring:logic-reviewer - Correctness review (domain logic, requirements, edge cases)ring:security-reviewer - Safety review (vulnerabilities, OWASP, authentication)ring:test-reviewer - Test quality review (coverage, edge cases, assertions, test anti-patterns)ring:nil-reviewer - Nil/null safety review (traces pointer risks, missing guards, panic paths)ring:dead-code-reviewer - Dead code review (orphaned code detection, reachability analysis, dead dependency chains)ring:commons-reviewer - lib-commons package usage review (lifecycle, tenancy, http, idempotency, security, database, messaging, outbox; reinvented-wheel opportunities)ring:obs-reviewer - Conditional specialist for tracing, metrics, logging, runtime recovery, redaction, constants, and SafeGo implicationsring:systemplane-reviewer - Conditional specialist for runtime config, hot-reload knobs, admin config, tenant-scoped settings, and systemplane importsring:streaming-reviewer - Conditional specialist for business events, outbox, producers, broker publishing, CloudEvents, manifests, and catalogsring:tenancy-reviewer - Multi-tenant usage review (lib-commons/multitenancy patterns, tenant isolation, JWT tenantId propagation)ring:perf-reviewer - Performance review (code hotspots, infra misconfigurations, Go/TypeScript/Python)18 specialized developer agents + 38 development skills: Backend 10-gate dev cycle + Frontend 9-gate dev cycle (accessibility, visual, E2E, performance) + Frontend refactoring + whole-codebase simplification sweep + delivery verification + service discovery + cycle management + lib-streaming end-to-end instrumentation. Go/TypeScript Backend specialists, DevOps Engineer, Frontend TypeScript specialist, Frontend Designer, QA Backend Analyst, QA Frontend Analyst, SRE, Multi-Tenant Reviewer, lib-commons Reviewer, lib-observability Reviewer, lib-systemplane Reviewer, and lib-streaming Reviewer. Complete development team coverage with TDD, observability, and security best practices.
Product team workflow: 18 skills + 4 research agents. Pre-dev planning with 5-gate (small features) and 10-gate (large features) orchestrators, delivery roadmap generation, delivery status tracking for evidence-based progress reporting, plus standalone streaming-event-mapping discovery. Includes parallel research agents, specialized code analysis, and Product Designer.
Technical writing specialists for functional and API documentation. 3 specialized agents (functional-writer, api-writer, docs-reviewer) and 6 documentation skills covering voice/tone, structure, API field descriptions, and quality review. Enforces clear, consistent documentation standards.
18 specialized developer agents + 38 development skills: Backend 10-gate dev cycle + Frontend 9-gate dev cycle (accessibility, visual, E2E, performance) + Frontend refactoring + whole-codebase simplification sweep + delivery verification + service discovery + cycle management + lib-streaming end-to-end instrumentation. Go/TypeScript Backend specialists, DevOps Engineer, Frontend TypeScript specialist, Frontend Designer, QA Backend Analyst, QA Frontend Analyst, SRE, Multi-Tenant Reviewer, lib-commons Reviewer, lib-observability Reviewer, lib-systemplane Reviewer, and lib-streaming Reviewer. Complete development team coverage with TDD, observability, and security best practices.
Verification-first engineering toolkit for Claude Code. 15 skills across a 5-phase spine (Investigate → Design → Implement → Verify → Ship), 8 specialist agents, an interactive setup wizard. Every skill has rationalizations + evidence requirements. Built for senior ICs and tech leads.
52 agent skills for systematic software development. Covers design, planning, TDD, code review, debugging, quality gates, and adversarial testing. 12 core skills are eval-tested with measured A/B deltas using Anthropic's skill evaluation framework.
Production-grade engineering skills for AI coding agents — covering the full software development lifecycle from spec to ship.
Core developer skills for feature planning, code review, testing, commits, and daily development workflows.
5つの専門エージェント(backend-reviewer, frontend-reviewer, test-reviewer, security-reviewer, ux-reviewer)がチームでコードレビューするスキル。