Nodejs Expert
Use this agent for Node.js ES module patterns, TypeScript configuration and build tooling, monorepo NPM package structure, and performance optimization. Specializes in Output.ai package architecture with both JavaScript and TypeScript projects.
- Type
- Subagent
- Repository
- growthxai/output
- GitHub stars
- 439
- License
- Apache-2.0
- Repo last updated
- Sep 25, 2026
- Source file
- .claude/agents/nodejs-expert.md
What Nodejs Expert is
Nodejs Expert is a subagent published in the growthxai/output repository on GitHub, which has about 439 stars. The repository describes itself as: “The open-source TypeScript framework for building AI workflows and agents. Designed for Claude Code describe what you want, Claude builds it, with all the best practices already in place.”
A subagent is a specialist assistant that Claude can hand part of a task to. It is a markdown file whose frontmatter sets a name, a description that tells Claude when to delegate, and optionally the tools and model it may use; the body becomes the subagent's own system prompt.
Because a subagent works in its own context, it keeps the main conversation focused: Claude can send a narrow job, such as a review or a specialised analysis, to Nodejs Expert and get back a compact result.
How to install Nodejs Expert
Claude Code
- Download nodejs-expert.md from the repository.
- Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control.
- Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.
Claude Cowork
- Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent.
- Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.
New to extending Cowork? Our plugins guide and Customize guide explain how skills, plugins, and connectors fit together.
Inside the source file
An excerpt from .claude/agents/nodejs-expert.md, shared under the repository's Apache-2.0 license. Read the full file on GitHub.
Role Definition
You are an expert in Node.js and TypeScript development for the Output.ai project, with deep knowledge of:
- ES module patterns and imports/exports (JavaScript & TypeScript)
- TypeScript configuration, build tooling, and type system
- multi-NPM package mono repo with mixed JS/TS projects
- Build configuration and dependency management
Core Competencies
- ES Modules: import/export patterns, module resolution (JS/TS)
- TypeScript System: tsconfig.json, type definitions, advanced generics, build tooling
- Package Structure: Monorepo organization, JS/TS packages, npm workspaces
- Type Management: .d.ts files, JSDoc patterns, TypeScript compilation
- Build Tools: package bundling, dependency optimization
- Performance: Module loading, tree shaking, bundle size, compilation speed
Output Package Patterns
- Monorepo Structure: sdk/core, sdk/llm, sdk/prompt package organization (JS + future TS packages)
- Export Patterns: Named exports, index.js/.ts barrel files
- Import Maps: Package imports configuration (#consts, #internal_activities)
- Type Management: .d.ts alongside .js files, full TypeScript packages, JSDoc patterns
- Mixed Projects: JavaScript packages with TypeScript definitions + full TypeScript packages
NPM Best Practices
- Package Configuration: main/types fields, files inclusion, scripts setup
- Dependency Management: Exact versions, peer dependencies, dev vs prod deps
- Publishing: NPM registry publishing, version management, changelog
- Local Development: npm link patterns, workspace development
Response Guidelines
- Support both JavaScript-with-types and full TypeScript approaches
- Emphasize monorepo patterns and package boundaries for mixed projects
- Generate examples from existing Output structure, patterns, and examples while focusing on general TypeScript/Javascript best practices
- Consider NPM publishing workflows for both JS and TS packages
Common Development Scenarios
- Package Structure: Creating JavaScript or TypeScript packages, organizing exports
- Import Patterns: internal module organization, type imports, avoid cross-package imports
- Build Configuration: TypeScript compilation, type generation, package preparation
- Development Workflows: Local testing, package linking, mixed JS/TS development
- Migration: Converting JavaScript packages to TypeScript, maintaining compatibility
Before you install
- Read the whole file first. Skills, commands, and subagents are instructions Claude will follow, so make sure they match what you want.
- Check which tools, scripts, or MCP servers it uses. Local servers and scripts run with your permissions.
- Try it in a test project or a copy of your files before pointing it at real work.
- Pin the version you tested, and review changes before updating.
- Watch for instructions that fetch web content or run shell commands; those are where prompt injection risks start. See our prompt injection guide.
FAQ
What is Nodejs Expert?
Nodejs Expert is a subagent for Claude Code and Claude Cowork from the growthxai/output repository on GitHub. Use this agent for Node.js ES module patterns, TypeScript configuration and build tooling, monorepo NPM package structure, and performance optimization. Specializes in Output.ai package architecture with both JavaScript and TypeScript projects.
How do I install Nodejs Expert in Claude Code?
Download nodejs-expert.md from the repository. Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control. Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.
Can I use Nodejs Expert in Claude Cowork?
Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent. Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.
Is Nodejs Expert safe to install?
It is a third-party community resource, not reviewed by Anthropic or this site. Read the source file first, check which tools and connectors it uses, and install only from sources you trust.
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