Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add roedyrustam/vibes-plug --skill js-backend-expertgit clone --depth 1 https://github.com/roedyrustam/vibes-plugWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/roedyrustam/vibes-plug/js-backend-expert)<a href="https://agentmods.dev/skills/roedyrustam/vibes-plug/js-backend-expert"><img src="https://agentmods.dev/badge/skills/roedyrustam/vibes-plug/js-backend-expert/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/roedyrustam/vibes-plug/js-backend-expert"><img src="https://agentmods.dev/badge/skills/roedyrustam/vibes-plug/js-backend-expert.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00077 | $0.03172 |
| Opus 5.5 | $0.00031 | $0.01269 |
| Sonnet 5.5 | $0.00015 | $0.00634 |
| Haiku 4.5 | $0.00008 | $0.00317 |
Grade A, and why
js-backend-expert scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
async fetch(request: Request, env: Env): Promise<Response> { How it starts
The opening of the file, as written. The whole thing — 221 lines — stays where its author put it; the contents beside it link to each section on GitHub.
JS Backend Expert (Node.js 24 LTS / Bun 1.2 / Deno 2.x Edition)
English
Orchestration & Integration
Connects and orchestrates with domain skills:
- API Contracts & Full-Stack:
api-design-expert,spec-driven-development-expert,openapi-swagger-codegen-expert,typescript-expert, andsenior-frontendfor end-to-end type safety, Hono RPC client binding, and OpenAPI 3.1 contracts. - Database & Persistence:
database-orm-expertfor Drizzle ORM, Prisma 6, connection pooling (PgBouncer/Supavisor), and zero-downtime migrations. - Auth & Security:
authentication-identity-expert(JWT, OAuth2, RBAC/ABAC) andzero-trust-secret-vault(environment secret management). - Asynchronous & Queues:
async-queue-temporal-expert(BullMQ / Temporal workflows) andsse-websocket-streaming-expert(real-time events). - Quality & Testing:
autonomous-tdd-debugger,e2e-testing-expert, andanti-slopfor strict code quality, self-healing test pipelines, and zero-slop error handlers. - Master Orchestrators:
brainstormingandzero-to-prod-orchestrator(Phase 4: Backend & APIs).
Description
Production-grade guidance for building fast, scalable, and resilient JavaScript/TypeScript backend APIs, microservices, and serverless functions across Node.js 24 (LTS), Bun 1.2+, and Deno 2.x. Covers high-throughput frameworks (Fastify 5, Hono, Express 5, NestJS), type-safe ORMs (Drizzle, Prisma 6), Hono RPC for type-safe full-stack communication, Edge Runtime patterns, WebSockets, BullMQ background jobs, graceful shutdown handling, and self-healing test pipelines.
Trigger Conditions
- Bootstrapping or refactoring a Node.js, Bun, or Deno backend application or microservice.
- Writing RESTful, GraphQL, WebSocket, or SSE (Server-Sent Events) API endpoints.
- Developing web servers using Fastify 5, Hono, Express 5, or NestJS.
- Building type-safe full-stack apps with Hono RPC or tRPC.
- Deploying backend logic to Edge Runtimes (Cloudflare Workers, Vercel Edge).
- Interacting with databases using Drizzle ORM, Prisma 6, or Kysely.
- Setting up background job processing with BullMQ and Redis.
- Implementing rate limiting, CORS, Content Security Policy (CSP), and JWT/Session authentication.
- Writing backend tests using Vitest, Supertest, or Node's native
node:testrunner with automated self-healing.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2d ago Changed · -1 lines 4181720ab67e
- 3d ago Changed · +1 lines 180ec8eb112c
- 6d ago Changed 4a2840e623c4
- 15d ago Changed 61eafcf4430e
- 20d ago Changed f28f1023d689
- 21d ago Changed ef2c4fe76d81
- 23d ago Changed · +1 lines 7f546ea3d01b
- 29d ago Changed fcca46fa6375
- 1mo ago Changed ddde98632b65
- 1mo ago First seen · 220 lines · 77 tokens per session scan A 224f4746aac9
js-backend-expert is a skill published in the GitHub repository roedyrustam/vibes-plug (113 stars, last pushed today), licensed MIT. It adds 77 tokens to every session and 3,172 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
Other skills, from other repositories
express
Expert Express.js assistance covering routing, middleware pipelines, error handling, and REST API design. Use when building Node.js backend services and web APIs.
nestjs
Expert NestJS assistance covering modular architecture, dependency injection, decorators, guards, interceptors, and Prisma/TypeORM. Use when building enterprise-grade, scalable TypeScript backends.
bun
Expert Bun runtime assistance covering high-performance JS/TS execution, built-in bundler, package manager, and test runner. Use when executing TypeScript natively, running fast scripts, or serving HTTP APIs.
deno
Expert Deno runtime assistance covering secure defaults, TypeScript out-of-the-box, standard library, and Deno Deploy. Use when building modern web backends, edge functions, or serverless scripts.
hono
Expert Hono framework assistance covering ultra-fast routing, Web Standards, multi-runtime support (Cloudflare Workers, Deno, Bun, Node), and RPC. Use when developing edge APIs and lightweight microservices.
typescript-advanced-types
Master TypeScript's advanced type system including generics, conditional types, mapped types, template literals, and utility types for building type-safe applications. Use when implementing complex type logic, creating reusable type utilities, or ensuring compile-time type safety in TypeScript projects.