io.github.ArcReel/ArcReel/writing-great-skills

Reference for writing and editing skills well — the vocabulary and principles that make a skill predictable.

io.github.aiskillstore/marketplace/nextjs-optimization

Optimize Next.js 15 applications for performance, Core Web Vitals, and production best practices using App Router patterns

io.github.openclaw/clawhub/writing-evals

Scaffolds evaluation suites for the Axiom AI SDK. Generates eval files, scorers, flag schemas, and config from natural-language descriptions. Use when creating evals, writing scorers, setting up flag schemas, or configuring axiom.config.ts.

io.github.vercel-labs/native/automation

Automation and verification guide for running Native SDK apps. Use when the user asks to test a running app, inspect runtime state, list windows, wait for readiness, drive widgets, take deterministic screenshots, send bridge commands, debug why automation is not connected, create smoke tests, or verify a Native SDK example in a GUI-capable session.

io.github.microsoft/PowerToys/powertoys-verification

Verify PowerToys behavior end-to-end with the winapp CLI across two scenarios: (A) a module's release checklist against the installed build; (B) PR validation — derive each PR's checklist from its description + diff, then drive it against the installed build (a merged/shipped PR, or a whole release/hotfix set) or by building + sideloading the module when the PR isn't in the build yet (unmerged or not-yet-released). Drive each item via UIA invoke / Named Events / settings.json edits / clipboard / GPO / SendInput, and emit a structured PASS / FAIL / BLOCKED verdict per item with evidence (FAIL distinguishes product defects from stale/ambiguous checklist items). Use when asked to verify a module checklist, validate a PR, sign off a release/hotfix's PRs, or QA installed/sideloaded PowerToys bits. Combines generic winapp ui mechanics (references/winapp-ui-testing.md) with PT-specific recipes, per-scenario playbooks (references/scenarios/), and the helper .ps1 files shipped with this skill.

io.github.microsoft/agent-framework/python-development

Coding standards, conventions, and patterns for developing Python code in the Agent Framework repository. Use this when writing or modifying Python source files in the python/ directory.

io.github.temporalio/temporal/review

Review code for common issues. Use when reviewing PRs, suggesting code changes, or when user asks to review code.

io.github.lightdash/lightdash/frontend-style-guide

Apply the Lightdash frontend style guide when working on React components, migrating Mantine v6 to v8, or styling frontend code. Use when editing TSX files, fixing styling issues, or when user mentions Mantine, styling, or CSS modules.

io.github.openclaw/openclaw/xurl

xurl CLI for authenticated X posts, replies, reads/search, DMs, media upload, followers, auth status, or raw v2 API calls.

io.github.wshobson/agents/review-agent-setup

Configure human-in-the-loop gating for AI agent review actions in Claude Code. Use when setting up a project where an agent may post PR reviews, comments, merges, or edit CI configuration, and you want a cryptographically auditable approval trail with Cedar-enforced gates.

io.github.dzhng/skills/refactor-clean

Refactor cleanly instead of layering sediment. Use when a change reveals duplicated concepts, local adapters, obsolete owners, compatibility wrappers, parallel abstractions, an over-large module that has accreted many responsibilities, or "just tack this on" pressure in any code area.

io.github.Stirling-Tools/Stirling-PDF/ui-before-after

Analyse a branch or PR and automatically capture before/after screenshots of every UI surface its changes touch, then pixel-diff the pairs to surface what actually changed and assemble PR-ready before/after montage images. Generic and diff-driven: it derives the capture targets from the diff (changed tools/routes → URLs) instead of hand-listing screens, captures "before" from the base branch and "after" from the head, then keeps only the views that visually differ. Each comparison is auto-cropped to the region that actually changed (the bounding box of differing pixels), falling back to the full page only when the change spans most of it. Use for before/after shots, a visual diff of a branch/PR, "screenshots for the PR description", "show what changed in the UI", or a side-by-side of UI changes. Takes a PR number/URL (resolved via gh) or a branch; defaults to the current branch vs its base. Flags: --scope <selector>, --base <ref|merge-base>, --theme light|dark|both, --all (capture every route, not just change

io.github.Stirling-Tools/Stirling-PDF/ui-walkthrough

Full UI investigation of the current branch's feature. Enumerates every view and state (empty, populated, loading, error, each dialog/menu/panel, responsive breakpoints, light + dark + RTL), captures them with the stubbed Playwright harness, assembles a single-image HTML walkthrough with a global light/dark toggle slider, then runs two review passes: visual/consistency (alignment, spacing, professionalism, dark/light parity, contrast, truncation) and UX/ease-of-use (flow, discoverability, affordances, empty/error states, expectations). Use when asked for a UI walkthrough, screenshot review, design or QA pass, "find anywhere to make it easier/better for users", or before merging frontend work. Pass --fix to auto-apply safe frontend fixes and re-capture; --theme to limit themes; --no-rtl to skip RTL.

io.github.Stirling-Tools/Stirling-PDF/feature-walkthrough

Explain the full logic and process of the current branch end-to-end so someone with no prior knowledge of the task can understand, review, and reproduce it. Scopes the change from the branch diff, traces the flow across every layer it touches (frontend tool/hook/component, Java controller/service/endpoint, Python engine, config, i18n, tests), and produces a self-contained walkthrough document with Mermaid diagrams (sequence/flow/architecture), annotated file map with clickable references, before/after behavior, screenshots where a UI is involved, a "try it locally" section, and edge cases/risks. Use when asked for a feature or branch walkthrough, "explain what this branch does", a design/logic writeup, PR reviewer onboarding, or a hand-off doc. Pass --html to also emit a rendered HTML version; --no-screens to skip screenshots.

io.github.EpicenterHQ/epicenter/testing

Test file conventions: setup functions, factories, Result assertion helpers, organization, type testing, naming, and pruning low-value tests. Use when: "write tests", "add a test", "fix this test", "delete tests", "prune tests", "audit tests", or modifying *.test.ts files.

io.github.EpicenterHQ/epicenter/refactoring

Per-change refactoring mechanics: count callers exactly, decide inline vs keep, collapse duplicate switch branches, route raw access through a single typed boundary, surgical one-change-per-commit, post-refactor straggler sweep for stale JSDoc and dead exports. Use when actually editing code to clean it up, when deciding whether a 1-caller helper earns its keep, or when planning a sequence of small refactor commits. For the smell catalog use code-audit; for session-long simplification use collapse-pass.

io.github.yv1ing/Z3r0/sqlmap

Use for authorized SQL injection testing with the sqlmap CLI, including detection, DBMS fingerprinting, request replay, and extraction checks against in-scope web targets.

io.github.FradSer/dotclaude/refactor

Executes automated refactoring for specific files, directories, or semantic queries. This skill should be used when the user asks to refactor specific files or directories, simplify recently changed code, clean up dead code in a limited scope, or invokes "/refactor".

io.github.vercel/next.js/insight-error-page

Write or audit an insight-kind error page for the Next.js dev overlay. Use when creating a new `errors/<slug>.mdx` page, auditing an existing one, or checking that a page matches the framework fix cards. Covers page structure, title alignment, FixCard cards with Copy prompt button, code snippets, terminology verification against canonical docs, and Vercel technical writing style.

io.github.jeremylongshore/claude-code-plugins-plus-skills/portaljs-deploy

Deploy a PortalJS portal to PortalJS Arc — Datopian-managed static hosting on Cloudflare. Builds a static export, uploads it, and returns a live <slug>.arc.portaljs.com URL. One command, one target.

io.github.aiskillstore/marketplace/backend-fastapi

Documentation for the FastAPI backend, endpoints, and dependency injection.

io.github.feast-dev/feast/feast-architecture

Internals of the Feast codebase — how each component works, where the key abstractions live, and the data flow through the system. Use when asked how feast apply works, how the registry stores data, how materialization moves data, how get_online_features retrieves features, how the feature server works, how the Kubernetes operator manages deployments, or when navigating the codebase to understand where to make a change.

io.github.microsoft/vcpkg/review-vcpkg-prs-today

Review open non-draft microsoft/vcpkg pull requests updated in the last 30 days. Use when asked for batch triage, per-PR review reports, an index grouped by verdict, or grouping competing PRs that modify the same port.

io.github.microsoft/vcpkg/review-vcpkg-pr

Review a microsoft/vcpkg pull request end-to-end.