Software Development AI agent skills

13,359 skills in the archive. Read a skill’s instructions or open its original repository.

• Code Review

  by @WellApp-ai

  Review code changes against hard rules and conventions

• Test Hardening

  by @WellApp-ai

  Convert passed QA Contract criteria to automated tests

• Hotfix

  by @WellApp-ai

  Expedited workflow for urgent production issues

• Setup

  by @WellApp-ai

  One-time environment setup for new team members

• Compliance Audit

  by @WellApp-ai

  Audit Value Delivery compliance after PR push

• Api Versioning Strategy

  by @aj-geddes

  Implement API versioning strategies including URL versioning, header versioning, backward compatibility, deprecation strategies, and migration guides. Use when dealing with API versions, deprecating endpoints, or managing…

• Code Generation Template

  by @aj-geddes

  Generate code from templates and patterns including scaffolding, boilerplate generation, AST-based code generation, and template engines. Use when generating code, scaffolding projects, creating boilerplate, or using templates.

• Code Review Analysis

  by @aj-geddes

  Perform comprehensive code reviews with best practices, security checks, and constructive feedback. Use when reviewing pull requests, analyzing code quality, checking for security vulnerabilities, or providing code improvement…

• Api Pagination

  by @aj-geddes

  Implement efficient pagination strategies for large datasets using offset/limit, cursor-based, and keyset pagination. Use when returning collections, managing large result sets, or optimizing query performance.

• Api Filtering Sorting

  by @aj-geddes

  Implement advanced filtering and sorting capabilities for APIs with query parsing, field validation, and optimization. Use when building search features, complex queries, or flexible data retrieval endpoints.

• Accessibility Testing

  by @aj-geddes

  Test web applications for WCAG compliance and ensure usability for users with disabilities. Use for accessibility test, a11y, axe, ARIA, keyboard navigation, screen reader compatibility, and WCAG validation.

• Api Contract Testing

  by @aj-geddes

  Verify API contracts between services to ensure compatibility and prevent breaking changes. Use for contract testing, Pact, API contract validation, schema validation, and consumer-driven contracts.

• Application Logging

  by @aj-geddes

  Implement structured logging across applications with log aggregation and centralized analysis. Use when setting up application logging, implementing ELK stack, or analyzing application behavior.

• Api Rate Limiting

  by @aj-geddes

  Implement API rate limiting strategies using token bucket, sliding window, and fixed window algorithms. Use when protecting APIs from abuse, managing traffic, or implementing tiered rate limits.

• Code Documentation

  by @aj-geddes

  Write comprehensive code documentation including JSDoc, Python docstrings, inline comments, function documentation, and API comments. Use when documenting code, writing docstrings, or creating inline documentation.

• Circuit Breaker Pattern

  by @aj-geddes

  Implement circuit breaker patterns for fault tolerance, automatic failure detection, and fallback mechanisms. Use when calling external services, handling cascading failures, or implementing resilience patterns.

• Alert Management

  by @aj-geddes

  Implement comprehensive alert management with PagerDuty, escalation policies, and incident coordination. Use when setting up alerting systems, managing on-call schedules, or coordinating incident response.

• Caching Strategy

  by @aj-geddes

  Implement efficient caching strategies using Redis, Memcached, CDN, and cache invalidation patterns. Use when optimizing application performance, reducing database load, or improving response times.

• Code Metrics Analysis

  by @aj-geddes

  Analyze code complexity, cyclomatic complexity, maintainability index, and code churn using metrics tools. Use when assessing code quality, identifying refactoring candidates, or monitoring technical debt.

• Angular Module Design

  by @aj-geddes

  Design Angular modules using feature modules, lazy loading, and dependency injection. Use when organizing large Angular applications with proper separation of concerns.

• Azure App Service

  by @aj-geddes

  Deploy and manage web apps using Azure App Service with auto-scaling, deployment slots, SSL/TLS, and monitoring. Use for hosting web applications on Azure.

• Api Response Optimization

  by @aj-geddes

  Optimize API response times through caching, compression, and efficient payloads. Improve backend performance and reduce network traffic.

• Batch Processing Jobs

  by @aj-geddes

  Implement robust batch processing systems with job queues, schedulers, background tasks, and distributed workers. Use when processing large datasets, scheduled tasks, async operations, or resource-intensive computations.

• Capacity Planning

  by @aj-geddes

  Analyze team capacity, plan resource allocation, and balance workload across projects. Forecast staffing needs and optimize team utilization while maintaining sustainable pace.

• Api Authentication

  by @aj-geddes

  Implement secure API authentication with JWT, OAuth 2.0, API keys, and session management. Use when securing APIs, managing tokens, or implementing user authentication flows.

• Bundle Size Optimization

  by @aj-geddes

  Reduce JavaScript and CSS bundle sizes through code splitting, tree shaking, and optimization techniques. Improve load times and overall application performance.

• Browser Debugging

  by @aj-geddes

  Debug client-side issues using browser developer tools. Identify JavaScript errors, styling issues, and performance problems in the browser.

• Artifact Management

  by @aj-geddes

  Manage build artifacts, Docker images, and package registries. Configure artifact repositories, versioning, and distribution strategies.

• Api Error Handling

  by @aj-geddes

  Implement comprehensive API error handling with standardized error responses, logging, monitoring, retry logic, and validation patterns. Use when building resilient APIs, debugging issues, improving error reporting, implementing…

• Api Reference Documentation

  by @aj-geddes

  Create comprehensive API reference documentation with OpenAPI/Swagger specs, REST endpoints, authentication, examples, and SDKs. Use when documenting REST APIs, GraphQL APIs, endpoint documentation, or OpenAPI specifications.

• Access Control Rbac

  by @aj-geddes

  Implement Role-Based Access Control (RBAC), permissions management, and authorization policies. Use when building secure access control systems with fine-grained permissions.

• Api Security Hardening

  by @aj-geddes

  Secure REST APIs with authentication, rate limiting, CORS, input validation, and security middleware. Use when building or hardening API endpoints against common attacks.

• Changelog Maintenance

  by @aj-geddes

  Maintain comprehensive changelogs and release notes following Keep a Changelog format. Use when documenting version history, release notes, or tracking changes across versions.

• Nix Setup

  by @mizchi

  Set up reproducible dev environments via devbox (Nix-backed) or pure Nix flakes. Templates for MoonBit, Rust, TypeScript+pnpm, Python+uv, Haskell, OCaml, OxCaml preloaded with just / ast-grep / apm. Covers devbox.json,…

• Moonbit Js Binding

  by @mizchi

  Write MoonBit bindings to JavaScript with `extern "js"`. Use for FFI declarations against browser/Node/Deno APIs or npm packages, wrapping JS objects in opaque types, bridging Promises (`async fn` / `Promise::wait()`),…

• Formal Methods Reconciler

  by @mizchi

  Use when reconciling software specs, docs, tests, configs, code, logs, or incidents with formal methods. Helps Codex extract claims, decide whether docs or implementation are the source of truth, choose an appropriate tool such…

• Skill Finder

  by @mizchi

  Use ONLY when the user explicitly asks to discover or evaluate a skill from OUTSIDE the curated catalog — e.g., "find a Stripe skill", "is there a skill for X?", "evaluate this candidate before adopting". Meta-skill,…

• Skill Selector

  by @mizchi

  Meta-skill for picking project skills via APM. Invoke ONLY when the user explicitly asks to set up apm.yml, choose which skills a project needs, or evaluate a catalog match — do NOT auto-invoke on routine project-init or…

• Ast Grep Practice

  by @mizchi

  Operate ast-grep as a project lint tool. Covers sgconfig.yml, fix/rewrite rules, constraints, transform, testing, and CI. Use when writing rules ast-grep can express but general-purpose linters cannot.

• Cloudflare Workers Cd Rollback

  by @mizchi

  GitHub Actions CD for a Cloudflare Worker with auto-rollback on smoke failure. Use when you want push-to-deploy with safety: capture pre-deploy version, deploy, smoke, rollback if smoke fails.

• Gh Fix Ci

  by @mizchi

  Use when GitHub Actions PR checks are failing on a pull request and need to be diagnosed or fixed. Inspects checks / logs via `gh`, drafts a fix plan, and implements only after explicit approval. Trigger on red checks, failing…

• Cloudflare Workers Otel Utels

  by @mizchi

  Cloudflare Worker telemetry at the fetch boundary — OTLP traces / metrics / logs + utels error tracking + D1 Proxy that emits slow-query warnings. Use when adding observability to a Worker without touching handler code.

• Sqlc Gen Moonbit Safety

  by @mizchi

  Post-generation safety checks for sqlc-gen-moonbit + Cloudflare D1. Use when a MoonBit Worker uses sqlc-gen-moonbit and you need to gate against BigInt-bind hangs (D1 1101) and SQL placeholder mix.

• Dotenvx

  by @mizchi

  Use when working with the `dotenvx` env-var management tool — encrypting .env files, juggling multiple environments (.env.production / .env.staging / .env.ci), committing encrypted secrets to git with `.env.vault` / `.env.keys`…

• Justfile

  by @mizchi

  Reference for the `just` command runner — justfile syntax and GitHub Actions integration. Use when an existing repo already has a `justfile` and tasks must be added, modified, or audited. For new mizchi-owned repos, prefer the…

• Sql Schema Audit

  by @mizchi

  Index coverage and N+1 review aids for SQLite/D1 schemas with a sqlc catalog. Surfaces unused indexes (with FK CASCADE awareness so cascade-load-bearing indexes are not flagged), queries that scan tables without index help, and…

• Retrospective Codify

  by @mizchi

  Pair "what failed first" with "what finally worked" and codify the should-have-known-it insight as an ast-grep rule, a skill, or a CLAUDE.md rule. Meta-skill: invoke ONLY when the user explicitly says "codify today's lessons,"…

• Sql Security

  by @mizchi

  SQL injection screening for host code (MoonBit / TS / Rust) plus secretlint setup notes. Flags single-line template-literal or string-concat SQL builders, regardless of value source — the scanner is line-based and does NOT trace…

• Conventional Changelog

  by @mizchi

  Reference for Conventional Commits and automatic CHANGELOG generation. Compares release-please / changesets / git-cliff / towncrier and covers commit format, Keep a Changelog, and semver tag practices. Use when setting up or…

• Sql Plan Audit

  by @mizchi

  Run EXPLAIN QUERY PLAN against every query in a sqlc-style catalog and diff the plans against a baseline. Detects new full-table SCANs and TEMP B-TREE sort scans introduced by PRs. SQLite/D1-only today; engine extension noted…

• Sql Lint

  by @mizchi

  Static lint for sqlc-style SQL catalogs. Catches duplicate query names, missing semicolons, SELECT *, double-wildcard LIKE, and other cheap-but-easy-to-miss mistakes. Optional sqlfluff integration for full style coverage.

• Cloudflare Access App Setup

  by @mizchi

  One-shot Cloudflare Access self-hosted application provisioning via the API — app + email allowlist policy + service token. Use when you want to gate a Worker behind Access without a full Pulumi stack.

• Pi Coding Agent

  by @mizchi

  Use when embedding `@mariozechner/pi-coding-agent` as a coding-agent runtime in Node scripts, writing pi extensions (plugins) with `pi.registerTool` / `pi.registerCommand` / `pi.on`, packaging and `pi install` from npm/git, or…

• Node Sqlite Vec

  by @mizchi

  Use when setting up Node 24+ built-in `node:sqlite` with the loadable `sqlite-vec` extension for vector / RAG storage in TypeScript without `better-sqlite3`, or when debugging vec0 BigInt rowids, vitest hanging on sqlite-vec,…

• Flaker Storage Cache On Ci

  by @mizchi

  Persist flaker's DuckDB storage across GitHub Actions runs and feed it from multiple sources (vitest reports, custom adapter reports, etc.). Use when wiring `@mizchi/flaker` into a new repo's CI, adding a new ingest source to an…

• Opentelemetry

  by @mizchi

  Platform-agnostic OpenTelemetry reference — signal selection (traces/metrics/logs), span design, context propagation (W3C TraceContext), sampling strategies, and OTLP exporter config. Use before writing any OTel instrumentation…

• Otel Node

  by @mizchi

  Node.js OpenTelemetry setup — SDK init, auto-instrumentation packages, and the esbuild ESM silent-failure gotcha (instrumentation-* packages produce no spans when bundled with esbuild --format=esm). Use when adding OTel to a…

• Aws Ecs Service Connect Ipv6

  by @mizchi

  Use when ECS Service Connect の DNS alias が IPv6 アドレスを返し、 IPv4-only の Fargate task から `network is unreachable` / `EAI_AGAIN` 等で接続できない問題に遭遇したとき。 OTel Collector → Tempo の OTLP gRPC、 Fargate → Service Connect の HTTP/gRPC…

• Frontend Review Triage

  by @mizchi

  Use when starting a frontend review engagement or when the user asks for an initial assessment ("triage", "day 0", "what's the state of this repo"). Reads package.json, README, gh issues, and produces a scorecard covering…

• Frontend Review Hygiene

  by @mizchi

  Use when assessing code quality hygiene — TypeScript strictness, lint violations, dead code, and duplication. Runs `audit-typescript.sh`, `audit-lint.sh`, `audit-similarity.sh`. Does NOT cover dependency freshness or CVE audit —…

• Frontend Review Ci

  by @mizchi

  Use when CI is slow (>10 min), flaky, or the user asks to optimize GitHub Actions for a frontend project. Analyzes `gh run list` history, identifies bottleneck steps, proposes sharding / cache / concurrency improvements. Runs…

• Frontend Expert

  by @mizchi

  Frontend architect perspective for the weekly review. Focuses on component design, state management, DOM usage, developer experience, and build configuration. Reads raw JSON from other audit scripts and produces an opinionated…

• Frontend Review Weekly

  by @mizchi

  Use for the weekly AI review. Orchestrates all frontend-review-* skills in order, dispatches the 5 perspective sub-skills in parallel, diffs against last week's KPIs, and produces a weekly report that feeds the ratchet.

• Performance Expert

  by @mizchi

  Performance specialist perspective for the weekly review. Focuses on bundle size, LCP / CLS / INP, avoidable re-work, image and font optimization. Reads audit-bundle and audit-lighthouse raw output when available.

• React Expert

  by @mizchi

  React specialist perspective for the weekly review. Focuses on hooks discipline, re-rendering, Suspense / RSC, and Context design. Opinionated on React idioms.

• Make Game

  by @PlayableIntelligence

  Use when the user wants to design, scaffold, build, or iterate on a video game — including brainstorming new game ideas, planning a gameplay loop, choosing an engine, scaffolding a project, adding features, fixing gameplay bugs,…

• Phaser

  by @PlayableIntelligence

  Build 2D browser games with Phaser 3 using scene-based architecture and centralized state. Use when creating a new 2D game, adding 2D game features, working with Phaser, or building sprite-based web games.

• Svelte Core Bestpractices

  by @sveltejs

  Guidance on writing fast, robust, modern Svelte code. Load this skill whenever in a Svelte project and asked to write/edit or analyze a Svelte component or module. Covers reactivity, event handling, styling, integration with…

• Game Qa

  by @PlayableIntelligence

  Game QA testing with Playwright — visual regression, gameplay verification, performance, and accessibility for browser games. Use when writing or running game tests, debugging test failures, or building QA infrastructure. This…

• Threejs Perf

  by @PlayableIntelligence

  Three.js performance optimization patterns for draw calls, scene traversal, and instancing. Use when optimizing 3D scenes with 100+ repeated objects, thousands of moving entities, or draw calls above 500. Loaded by threejs-game,…

• Threejs Game

  by @PlayableIntelligence

  Build 3D browser games with Three.js using event-driven modular architecture. Use when creating a new 3D game, adding 3D game features, setting up Three.js scenes, or working on any Three.js game project.

• Scaffold Gateables

  by @PlayableIntelligence

  Add gateable features to an existing browser game — skin picker, continue-after-death, bonus mode, save slots, daily challenge. Monetization-agnostic scaffolding that leaves clean hooks for any paywall, subscription, or…

• Improve Game

  by @PlayableIntelligence

  Analyze a game, find what needs work, and implement the highest-impact improvements. Use when the user says "improve my game", "make my game better", "fix my game", "what's wrong with my game", or "polish my game". Run…

• Use Template

  by @PlayableIntelligence

  Clone a game template from the gallery as a starting point. Use when the user says "use a template", "start from a template", "clone flappy-bird", "use the platformer template", or wants to quickly bootstrap a game from an…

• Review Game

  by @PlayableIntelligence

  Review an existing game codebase for architecture, performance, and best practices. Use when the user says "review my game", "code review", "check my game architecture", "is my game well structured", or "audit my game code". Do…

• Svelte Code Writer

  by @sveltejs

  CLI tools for Svelte 5 documentation lookup and code analysis. MUST be used whenever creating, editing or analyzing any Svelte component (.svelte) or Svelte module (.svelte.ts/.svelte.js). If possible, this skill should be…

• Monetize Game

  by @PlayableIntelligence

  Register your game on Play.fun (OpenGameProtocol), add the browser SDK, and get a monetized play.fun URL. Use when the user says "monetize my game", "add Play.fun", "add rewards", "register on Play.fun", or "get a play.fun URL".…

• Game Deploy

  by @PlayableIntelligence

  Deploy browser games to here.now (default), GitHub Pages, or other hosting. Use when deploying a game, setting up hosting, or publishing a game build. Do NOT use for local development servers (use npm run dev).

• Fetch Tweet

  by @PlayableIntelligence

  Fetch tweet content directly from fxtwitter API. Use when given a tweet/X URL to extract the tweet text, author, media, and engagement stats without loading x.com.

• Decision Map

  by @Mathews-Tom

  Maps the unresolved architecture, policy, and scope decisions that must be answered before planning can start: one durable decision ticket per question on the issue tracker, typed and blocker-linked under a parent map, with…

• Github

  by @Mathews-Tom

  GitHub CLI operations via `gh` for issues, PRs, Actions, releases, and REST/GraphQL API with `--json`/`--jq` parsing. Triggers on: "create an issue", "submit a PR", "check CI status", "why did CI fail", "merge a PR", or pasted…

• Agent Builder

  by @Mathews-Tom

  Build AI agents and automate Claude Code programmatically via the Claude Agent SDK and headless CLI mode. Covers Python SDK, claude -p, SDK MCP servers, hooks, sessions. Triggers on: "build an agent", "agent SDK", "headless…

• Lightpanda Browser

  by @Mathews-Tom

  Lightweight headless browser automation via Lightpanda and agent-browser CLI: 9x lower memory, 11x faster than Chromium, for scraping and DOM interaction without rendering. Triggers on: "lightpanda", "lightweight browser", "fast…

• Debug Investigator

  by @Mathews-Tom

  Hypothesis-driven debugging with ranked hypotheses, git bisect strategy, instrumentation planning, and minimal reproduction design. Triggers on: "debug this systematically", "root cause analysis", "bisect this bug", "rank…

• Code Refiner

  by @Mathews-Tom

  Deep code simplification and refactoring preserving behavior across Python, Go, TypeScript, Rust. Targets complexity, anti-patterns, readability debt. Triggers on: "simplify this code", "refactor for clarity", "reduce…

• Pr Review

  by @Mathews-Tom

  Diff-based PR review across code quality, test coverage, silent failures, type design, and comment quality with severity-ranked findings. Triggers on: "review my PR", "review this code", "check my changes", "audit this PR",…

• Opus 4 7 Migration

  by @Mathews-Tom

  Scan a repository for Opus-4.6-era patterns that break or degrade on Opus 4.7 — fixed-budget Extended Thinking parameters, retired model ID aliases, and prompts that assumed verbose default output or eager sub-agent delegation.…

• Dependency Audit

  by @Mathews-Tom

  Audits direct and transitive dependencies for license compliance, maintenance health, CVEs, abandoned packages, and bloat. Triggers on: "audit dependencies", "license check", "dependency health", "abandoned packages", "unused…

• Benchmark Runner

  by @Mathews-Tom

  Designs structured benchmarks comparing algorithms, models, or implementations with metrics, test cases, hardware context, and reproduction steps. Triggers on: "benchmark", "compare performance", "which is faster", "latency…

• Changelog Composer

  by @Mathews-Tom

  Generates structured changelogs and release notes from git history and PRs, classifying breaking changes, features, fixes, performance, docs. Triggers on: "generate changelog", "write release notes", "what changed since",…

• Mcp To Skill

  by @Mathews-Tom

  Converts MCP servers into on-demand skills to cut context window usage, classifying each tool by replacement strategy and generating the skill package. Triggers on: "convert MCP", "MCP to skill", "reduce context size", "too many…

• Pr Swarm

  by @Mathews-Tom

  Parallelizes two or more independent "own PR to green" loops for a single repository using isolated git worktrees and separate headless Claude Code sessions per PR — resolving merge conflicts, clearing review feedback, and…

• Codebase Advisor

  by @Mathews-Tom

  Senior codebase advisor that audits a repository, vets findings, and writes self-contained implementation plans for other agents to execute. Triggers on: "write improvement plans", "create an implementation backlog", "audit and…

• Handoff

  by @Mathews-Tom

  Produces and refreshes `.docs/handoff.md`, a 200-line session-continuity runbook for coding agents. Captures git state, working-tree changes, last validation commands, session decisions, blockers, resume checklist, references,…

• Project Context Setup

  by @Mathews-Tom

  Scaffolds per-repository agent context so coding agents share the same issue tracker rules, triage label vocabulary, domain glossary, ADR layout, and handoff conventions. Triggers on: "set up project context", "configure agent…

• Feasibility Assessor

  by @Mathews-Tom

  Evaluates whether a business idea is technically buildable and financially viable. Covers unit economics (CAC, LTV), revenue modeling, break-even, and go/no-go verdicts. Triggers on: "feasibility assessment", "viability…

• Arxiv Preflight

  by @Mathews-Tom

  Pre-submission validation audit for arXiv papers across TeX source, PDF, figures, metadata, bibliography, file organization, and common-error scans. Produces pass/fail report with specific fixes per arXiv requirement. Triggers…

• Linkedin Post Style

  by @Mathews-Tom

  Writes LinkedIn posts in a direct, analytical, dry-humored technical voice with visual companion guidance. Triggers on: "write this in my style", "draft a post", "rewrite this for LinkedIn", "post about this", "how should I…

• Milestone Runner

  by @Mathews-Tom

  Use when asked to "run milestones", "execute EXECUTION_PROMPTS.md", "continue the milestone sequence", "run independent milestones in parallel", "merge the stack", or "reconcile M5" after prior work changes the current design.…

• Gpu Optimizer

  by @Mathews-Tom

  GPU optimization for consumer NVIDIA GPUs (8-24GB VRAM) covering mixed precision, gradient checkpointing, XGBoost GPU, CuPy/cuDF migration, and torch.compile. Triggers on: "optimize GPU training", "speed up CUDA", "reduce OOM",…