javascript for Claude Code

974 mods tagged javascript that install into Claude Code, measured the same four ways as everything else here: what each costs in tokens on every session, what a security scan found and why, whether it is the original, and what changed.

Also for Claude Code: anthropic · Git and workflow · Python · Web3 and blockchain · React · TypeScript · docker · Go · Rust · Localization · PostgreSQL · nextjs

react/react

Skill Claude Code needs its repo

Orchestrate the Rust compiler port end-to-end. Discovers the current frontier, fixes failing passes, ports new passes, reviews, and commits in a loop.

not rated 251k +76 today A Snyk: passSkillSpector: pass 38 tokens original MIT

shadcn-add

02

TryGhost/Ghost

Command Claude Code

Add a new ShadCN/UI component to Shade with Storybook stories.

not rated 55k +28 today A 14 tokens original MIT

create-pr

03

prisma/orm

Skill Claude CodeCodex ✓ vendor

Creates a GitHub PR with a Linear-ticket-prefixed title and a decision-led, narrative description for Prisma 8. Use when the user wants to create a pull request, open a PR, or submit changes for review.

not rated 48k +13 changed 24d ago A Snyk: passSkillSpector: warn 48 tokens original Apache-2.0

events-system

04

phaserjs/phaser

Skill Claude CodeCodex

Use this skill when working with the Phaser 4 event system. Covers EventEmitter, scene events, game events, custom events, and event-driven communication. Triggers on: events, on, emit, EventEmitter, scene events, listeners.

not rated 40k +24 1mo ago A ✓ AI review Socket: passSnyk: passSkillSpector: warn 52 tokens original MIT

PostHog/posthog

Skill Claude CodeCodex

Implement and extend PostHog Data warehouse import sources. Use when adding a new source under products/warehousesources/backend/temporal/dataimports/sources, adding datasets/endpoints to an existing source, or adding incremental sync, resumable imports, webhook ingestion, pagination, credentials validation, and…

not rated 40k +149 changed 5d ago A SkillSpector: warn 69 tokens

turborepo

06

vercel/turborepo

Skill Claude CodeCodex ✓ vendor

Configure and troubleshoot Turborepo repositories. Use when working with turbo.json, task pipelines, caching, Remote Cache, the turbo CLI, filtering, environment variables, package boundaries, monorepo structure, or CI workflows.

not rated 31k +21 changed 10d ago A Socket: passSnyk: passSkillSpector: warn 50 tokens original MIT

factory-rereview

07

mastra-ai/mastra

Skill Claude CodeCodex

Re-review a pull request after a push — reconcile the previous review against the new commits, look for new defects the push introduced, then a fresh pass over the whole PR, and finish with a verdict on the PR.

not rated 29k +139 changed 5d ago A SkillSpector: warn 48 tokens

adr-skill

08

vercel/ai

Skill Claude CodeCodex ✓ vendor

Create and maintain Architecture Decision Records (ADRs) optimized for agentic coding workflows. Use when you need to propose, write, update, accept/reject, deprecate, or supersede an ADR; bootstrap an adr folder and index; consult existing ADRs before implementing changes; or enforce ADR conventions. This skill uses…

not rated 27k +84 today A Socket: passSnyk: passSkillSpector: warn 89 tokens

migrate-oxfmt

09

oxc-project/oxc

Skill Claude CodeCodex

Guide for migrating a project from Prettier or Biome to Oxfmt. Use when asked to migrate, convert, or switch a JavaScript/TypeScript project's formatter from Prettier or Biome to Oxfmt.

not rated 23k +31 today A Socket: passSnyk: warnSkillSpector: warn 53 tokens original MIT

crossposting

10

wasp-lang/wasp

Skill Claude Code

Crosspost Wasp blog articles (MDX) to DEV.to and Medium.

not rated 19k +5 today A SkillSpector: warn 19 tokens original MIT

qiankun

11

umijs/qiankun

Skill Claude CodeCodex

Usage manual for building micro-frontend projects with qiankun 3.x. Use when the user wants to create a qiankun main (host) app or sub (micro) app, convert an existing Vite app into a qiankun micro app, or wire up micro-frontend loading with React/Vue.

not rated 17k +2 11d ago A SkillSpector: pass 69 tokens original MIT

node-crawler

12

bda-research/node-crawler

Skill Claude CodeCodex

Node.js web crawler for production-grade, large-scale tasks — NOT for simple one-off requests. Use only when: bulk scraping, batch downloading, multi-page crawling, long-running spiders, or complex multi-step workflows that need connection pooling, rate limiting, proxy rotation, automatic retries, and Cheerio parsing.…

not rated 6.8k +1 3mo ago A SkillSpector: pass 115 tokens original MIT

Tencent/puerts

Skill Claude CodeCodex ✓ vendor

Guide for developing LLM agents based on PuerTsAgent framework — covers resource directory structure, system-prompt, skills, builtin modules, and best practices.

not rated 6.2k +3 5d ago A SkillSpector: warn 39 tokens

lookup-agent-run

14

vercel/eve

Skill Claude CodeCodex ✓ vendor

Find an eve Agent Run from a run ID, project, request reference, or approximate time using authorized evidence available to the consumer.

not rated 5.5k +47 today A 30 tokens original Apache-2.0

tinybase

15

tinyplex/tinybase

Plugin Claude Code

Bundles 1 skill · 90 tokens together

Official TinyBase skills for scaffolding, extending, persisting, and synchronizing local-first applications.

not rated 5.2k +4 7d ago A tokens not measured original MIT

taro-ui-guide

16

jd-opensource/taro-ui

Skill Claude CodeCodex

Guides installation, Taro config, styling, and usage of taro-ui (At components) for WeChat/Alipay/H5/RN. Use when building Taro apps with taro-ui, picking components, theming, i18n, or modifying packages/taro-ui source.

not rated 4.7k 11d ago A SkillSpector: pass 66 tokens original MIT

debug-task

17

moonrepo/moon

Skill Claude Code

Diagnose and fix moon tasks that are broken, misconfigured, or behaving unexpectedly. Use this skill when a moon task is failing, not running, skipped, hanging, producing stale or wrong output, cached when it shouldn't be, re-running every time, or missing outputs after a cache hit. Also covers pipeline hangs, tasks…

not rated 4.1k +16 changed today A Socket: passSnyk: passSkillSpector: warn 203 tokens original MIT

ax-ai

18

ax-llm/ax

Skill Claude CodeCodex

This skill helps an LLM generate correct AI provider setup and configuration code using @ax-llm/ax. Use when the user asks about ai(), providers, models, routing, adaptive balancing, presets, embeddings, batch audio with ai.transcribe() or ai.speak(), extended thinking, context caching, or mentions…

not rated 3.0k +4 changed today A SkillSpector: warn 105 tokens original Apache-2.0

task-manager

19

iamlukethedev/Claw3D

Skill Claude CodeCodex

Capture actionable user requests as persistent tasks, update task status as work progresses, and keep a shared task store in sync. Use when a user asks an agent to do work, check progress, block a task, complete a task, or manage the Kanban board.

not rated 2.3k +22 1mo ago A SkillSpector: warn 56 tokens original MIT

dynamic-archify

20

Unclecheng-li/AI_Animation

Skill Claude CodeCodex

Create professional architecture, workflow, sequence, data-flow, and lifecycle/state diagrams as standalone animated HTML files with SVG graphics, flowing animation effects, a built-in dark/light theme toggle, and one-click export to PNG / JPEG / WebP / SVG / GIF / WebM. Accepts plain-language descriptions or pasted…

not rated 1.4k +38 yesterday A SkillSpector: pass 163 tokens original MIT

wakaru

21

pionxzh/wakaru

Skill Claude CodeCodex

Turn minified, bundled, or transpiled JavaScript back into readable modules. Use when you encounter unreadable production JS — a webpack/esbuild/Metro/Rollup bundle, a minified vendor script, Babel/TypeScript/SWC-transpiled output, or a single mangled .js file — and need to read, audit, debug it, or recover a…

not rated 1.0k +5 changed today A SkillSpector: warn 99 tokens original Apache-2.0

THREE.Terrain

22

IceCreamYou/THREE.Terrain

Skill Claude CodeCodex

Use this guide when an agent must build, modify, inspect, or document a terrain scene with THREE.Terrain. The library creates heightmapped Three.js terrain and provides procedural generators, filters, material blending, decoration tools, grass, image conversion, analysis, and seeded randomness.

not rated 908 +2 5d ago A 0 tokens original MIT

npm-security

23

bodadotsh/npm-security-best-practices

Skill Claude CodeCodex

Prevent JavaScript/TypeScript projects from supply-chain attacks across package managers like npm, pnpm, yarn, bun, and deno. Use whenever planning, installing, updating dependencies or configuring package managers.

not rated 859 changed 12d ago A SkillSpector: warn 43 tokens original MIT

featurevisor

24

featurevisor/featurevisor

Skill Claude CodeCodex

Author, query, and integrate Featurevisor — Git-based feature flags, A/B experiments, and remote config. Use whenever the user mentions Featurevisor, works in a project containing featurevisor.config.js, edits files under attributes/, segments/, features/, variables/, groups/, schemas/, targets/, sets/, or tests/…

not rated 811 +1 27d ago A SkillSpector: warn 266 tokens original MIT

At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: