Coding & Development
95 scanned skills in coding & development.
A framework for defining and running formal evaluations of Claude Code sessions to measure reliability and prevent regressions.
Provides Playwright end-to-end testing patterns including Page Object Model structure, configuration, CI/CD integration, artifact management, and stra
Enforces test-driven development by writing a failing test first, then minimal implementation code, then refactoring, for every feature or bugfix.
Performs multi-axis code review across correctness, readability, architecture, security, and performance before any change is merged.
A structured debugging methodology for diagnosing hard bugs and performance regressions by building tight feedback loops, reproducing, hypothesizing,
Guides development using the test-driven red-green-refactor loop, writing failing tests first to prove code works and reproduce bugs before fixing the
Guides writing and approving a structured specification with objectives, boundaries, and success criteria before any code is implemented.
Maintains a REGRESSION.md ledger of module dependencies and executable acceptance commands so that changes to one module are verified against all down
Establishes a project's quality bar as a written contract and stops agents quietly lowering it. Interviews the user on which dimensions matter, suppli
A developer guide for adding a new issue-thread interaction card kind end-to-end in the Paperclip codebase, covering shared contracts, server logic, U
Optimizes application performance across frontend, backend, queries, and databases. Use when performance requirements exist, when you suspect performa
This skill sets up the repository configuration for engineering skills, including issue tracker, triage labels, and domain documentation layout
Helps design stable, well-documented APIs and interfaces with consistent contracts, error handling, validation at boundaries, and backward-compatible
Manages code changes through structured Git workflows, atomic commits, and versioning practices.
Launches and verifies Paperclip instances from source, npm, or hosted stacks by driving real UI/CLI journeys and capturing evidence.
Reviews a code diff like a senior engineer, reporting bugs, security risks, load problems, missing tests, speed issues, and code to delete with concre
Manages deprecation and migration. Use when removing old systems, APIs, or features. Use when migrating users from one implementation to another. Use
Systematically identifies and fixes the root cause of errors in code.
Delivers changes incrementally in thin, verifiable slices. Use when implementing any feature or change that touches more than one file, or when pickin
Ensures every significant decision is rigorously challenged before implementation.
Verifies every framework-specific implementation decision against official documentation before writing code, citing sources and avoiding outdated or
Displays a one-shot scoreboard of measured savings (lines of code, tokens, cost, time) from the Ponytail agentic coding benchmark.
Reviews code changes since a fixed point along two axes—adherence to coding standards and faithfulness to the originating spec—and reports both side b
Performs evidence-backed impact analysis before high-risk code, data, or interface changes and reconciles the planned impact with the actual diff afte
Scaffolds, develops, installs, and verifies Paperclip plugins using a CLI-first local development workflow.
Automatically generate and update release changelogs and GitHub release notes from Git history.
Designing testable, modular codebases with deep interfaces and clear seams
Guidance on using Bun as a JavaScript runtime, package manager, bundler, and test runner, including when to choose it over Node and how to migrate.
Guides test-driven development using the red-green-refactor loop, helping write behavior-focused tests at agreed seams.
Reverse-engineer compiled binaries, packages, firmware, and apps to explain features, compare versions, or guide reconstruction using shipped artifact
Performs a full-repository quality audit covering bugs, security, load handling, missing tests, performance, and dead code, reporting findings in prio
Provides backend architecture patterns, API design, database optimization, and server-side best practices for Node.js, Express, and Next.js applicatio
Creating or modifying adapters for AI agents across server, UI, and CLI components.
A coding assistant mode that solves tasks with the smallest complete change and explains it in plain language.
Refactors working code to be clearer and easier to maintain while preserving exact behavior and following project conventions.
Turns a spec or requirements into a detailed, test-driven implementation plan with bite-sized tasks before any code is written.
Sets up an isolated git worktree workspace before starting feature work or implementing plans, including detection, creation, dependency setup, and ba
Helps write clear pull request bodies with summaries, diagrams, before/after evidence, and merge risk analysis.
Analyzes codebase architecture to identify and visualize refactoring opportunities
Iteratively fixes and re-runs failing CI checks on a GitHub pull request until all checks pass or a specific blocker is identified.
Sets up a scheduled agent and routine that runs a code-maintenance skill on a repository and opens pull requests automatically.
Uses Chrome DevTools MCP to inspect live browser behavior—DOM, console, network, performance, and screenshots—to debug and verify frontend code.
Systematically identify and resolve technical issues by investigating root causes before applying fixes.
Helps evaluate and respond to code review feedback with technical verification and reasoned pushback instead of blind implementation or performative a
Triages GitHub issues and external PRs through a role-based state machine, verifying bug reports, grilling underspecified requests, and writing agent-
Guides completing a development branch by verifying tests, then merging locally, pushing a PR, or keeping the branch, with safe worktree cleanup.
Audits a repository's CI pipelines and test suites to verify they actually catch regressions, detect fixture drift and false passes, and identify effi
Enforces running actual verification commands (tests, builds, linters) and checking their output before making any claims that work is complete or pas