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Agent skills for JavaScript in Claude Code

608 agent skills for JavaScript in the catalog list Claude Code as a supported host. These are the 15 that rank highest, ordered by adoption, freshness and documentation. n8n-code-tool, n8n-code-javascript and eas-update lead the list. Claude Code reads them from .claude/skills/<name>/SKILL.md in the project, or ~/.claude/skills/<name>/ for every project. A skill is a folder with a SKILL.md file; Claude Code loads it when a task matches its description. Every listing links to its source and shows a freshness grade.

Updated Oct 26, 2026 · Built from catalog data; how we rank and grade

How to install in Claude Code

npx skills add <owner>/<repo> --skill <name> -a claude-code

Where it goes: .claude/skills/<name>/SKILL.md in the project, or ~/.claude/skills/<name>/ for every project.

The host's docs describe copying a folder with a SKILL.md into a skills directory; the npx skills command is a third-party shortcut for the same thing.

Each listing page has the exact command for that listing.

Top 15 of 608

  1. 1
    n8n-code-tool

    czlonkowski

    Write JavaScript or Python for the n8n Custom Code Tool (@n8n/n8n-nodes-langchain.toolCode) — the AI-agent-callable tool, NOT the workflow Code node.

    • Largest repository here (6,517 stars)
    • Active in the last 30 days
    • Open source (MIT)

    ★ 6.5KLast active Oct 24, 2026Claude Code, Claude apps, Codex, Cursor +6

  2. 2
    n8n-code-javascript

    czlonkowski

    Write, review, or debug JavaScript in an n8n Code node.

    • Largest repository here (6,517 stars)
    • Active in the last 30 days
    • Open source (MIT)

    ★ 6.5KLast active Oct 24, 2026Claude Code, Claude apps, Codex, Cursor +6

  3. 3
    eas-update

    expo

    Configure and use EAS Update for over-the-air JavaScript and asset updates with expo-updates and EAS CLI.

    • Repository has 3K stars
    • Active in the last 30 days
    • Open source (MIT)

    ★ 3KLast active Oct 22, 2026Claude Code, Claude apps, Codex, Cursor +6

  4. 4
    edgeone-makers-tools

    edgeone

    EdgeOne Makers 全栈开发技能包 —— 涵盖 AI Agent 开发（DeepAgents、LangGraph、 Claude SDK、OpenAI Agents、CrewAI）、云函数（Node.js/Go/Python）、边缘函数、 KV 存储、中间件及快速部署，帮助 AI 编程助手准确高效地在…

    • Repository has 1.8K stars
    • Active in the last 30 days
    • Open source (MIT)

    ★ 1.8KLast active Oct 8, 2026Claude Code, Claude apps, Codex, Cursor +6

  5. 5
    triage-frontend-issues

    getsentryOfficial

    Triage new issues in the Sentry `javascript` project by archiving non-actionable noise.

    • Published by the vendor
    • Repository has 1.1K stars
    • Active in the last 30 days

    ★ 1.1KLast active Sep 28, 2026Claude Code, Claude apps, Codex, Cursor +6

  6. 6
    cyrus-setup-prerequisites

    cyrusagents

    Check and install prerequisites for Cyrus — Node.js, jq, gh CLI, and the cyrus-ai npm package.

    • Active in the last 30 days
    • Open source (Apache-2.0)

    ★ 867Last active Sep 30, 2026Claude Code, Claude apps, Codex, Cursor +6

  7. 7
    note-toolbar-api

    chrisgurney

    Write, edit, or debug JavaScript that uses the Note Toolbar `ntb` API inside Obsidian.

    • Active in the last 30 days
    • Open source (GPL-3.0)

    ★ 791Last active Oct 21, 2026Claude Code, Claude apps, Codex, Cursor +6

  8. 8
    node-and-js-frameworks

    boldsoftware

    Use when the user needs Node.js or npm installed, or is running a JS framework dev server (Next.js, Vite, webpack, etc.) on an exe.dev VM — especially if the…

    • Active in the last 30 days

    ★ 710Last active Oct 24, 2026Claude Code, Claude apps, Codex, Cursor +6

  9. 9
    clickhouse-js-node-rowbinary

    ClickHouseOfficial

    Generate TypeScript/JavaScript code that reads/decodes AND writes/encodes ClickHouse RowBinary streams for the ClickHouse HTTP server.

    • Published by the vendor
    • Active in the last 30 days
    • Open source (Apache-2.0)

    ★ 560Last active Oct 19, 2026Claude Code, Claude apps, Codex, Cursor +6

  10. 10
    pnpm

    Anthony Fu

    Node.js package manager with strict dependency resolution.

    • Active in the last 30 days
    • Open source (MIT)

    ★ 147Last active Sep 25, 2026Claude Code, Claude apps, Codex, Cursor +6

  11. 11
    otel-js

    ollygarden

    OpenTelemetry in Node.js / JavaScript / TypeScript — NodeSDK, declarative YAML configuration, auto-instrumentations, ESM vs CJS import patterns.

    • Active in the last 30 days
    • Open source (Apache-2.0)

    ★ 116Last active Oct 21, 2026Claude Code, Claude apps, Codex, Cursor +6

  12. 12
    nodejs-core

    mcollina

    Contributes to and debugs Node.js core, including nodejs/node commit and PR tone, contribution workflows, native crashes, V8 performance, node-gyp builds…

    • Repository has 2K stars
    • Open source (MIT)

    ★ 2KLast active Aug 3, 2026Claude Code, Claude apps, Codex, Cursor +6

  13. 13
    jsdoc

    yamcodes

    Use this skill to automatically write or fix JSDoc comments for JavaScript/TypeScript code.

    • Active in the last 30 days
    • Open source (MIT)

    ★ 147Last active Sep 25, 2026Claude Code, Claude apps, Codex, Cursor +6

  14. 14
    fastify-best-practices

    mcollina

    Guides development of Fastify Node.js backend servers and REST APIs using TypeScript or JavaScript.

    • Repository has 2K stars
    • Open source (MIT)

    ★ 2KLast active Aug 17, 2026Claude Code, Claude apps, Codex, Cursor +6

  15. 15
    package-security-check

    instructa

    Run a reusable JavaScript supply-chain security baseline with pnpm-first hardening, release-age gating, lifecycle-script controls, exotic dependency checks…

    • Active in the last 30 days
    • Ships helper scripts
    • For Python

    ★ 139Last active Oct 15, 2026Claude Code, Claude apps, Codex, Cursor +6

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