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Agent skill

Nestjs Controllers Services

by HoangNguyen0403 in HoangNguyen0403/agent-skills-standard

Separate Controllers from Services and build Custom Decorators in NestJS.

MITAuto-check passedBackend & APIs

Install Nestjs Controllers Services

skills CLI
$ npx skills add HoangNguyen0403/agent-skills-standard --skill nestjs-controllers-services -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install HoangNguyen0403/agent-skills-standard nestjs-controllers-services --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/HoangNguyen0403/agent-skills-standard.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/nestjs/nestjs-controllers-services .claude/skills/nestjs-controllers-services && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
nestjs-controllers-services
GitHub stars
572
Token cost
~723 tokens
SKILL.md length
211 words
Files
3 (incl. references)
Skills in repo
211
Repo updated
First seen
Licence
MIT

At a glance

Separate Controllers from Services and build Custom Decorators in NestJS.

  • Defining NestJS controllers
  • SKILL.md covers Priority: P0 (CRITICAL), Controllers, DTOs & Validation and Interceptors (Response Mapping), plus 5 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Custom parameter decorators

What it does

Nestjs Controllers Services is an agent skill from HoangNguyen0403/agent-skills-standard. Separate Controllers from Services and build Custom Decorators in NestJS. Use when defining NestJS controllers, services, or custom parameter decorators.

Its SKILL.md is about 720 tokens, which your agent loads only when the skill is triggered. The skill folder holds 4 other files, including reference files (for example `evals/evals.json` and `references/REFERENCE.md`).

It sits in Backend & APIs. It works with NestJS. The repository describes itself as: A collection of Agent Skills Standard and Best Practice for Programming Languages, Frameworks that help our AI Agent follow best practies on frameworks and programming laguages. The licence is MIT.

When your agent uses it

  • Defining NestJS controllers
  • Custom parameter decorators

Example prompts

  • “/nestjs-controllers-services”

What it can do on your machine

Read from SKILL.md and the folder at commit b529c2d. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are typescript).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Nestjs Controllers Services loads about 723 tokens when it runs, and up to ~1.1k if it reads all its reference files. Until then it costs about 45 tokens; SKILL.md has 211 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~45
When it runs · the whole SKILL.md, loaded when a task matches
~723
With references · SKILL.md plus every file in references/, read only if the agent opens them
~1.1k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from HoangNguyen0403/agent-skills-standard at commit b529c2d, republished under its MIT licence (© HoangNguyen0403). 211 words, ~723 tokens.

Download SKILL.mdSave it as .claude/skills/nestjs-controllers-services/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.
name
nestjs-controllers-services
description
Separate Controllers from Services and build Custom Decorators in NestJS. Use when defining NestJS controllers, services, or custom parameter decorators.

NestJS Controllers & Services Standards

Priority: P0 (CRITICAL)

Controllers

  • Role: Handler only. Delegate all logic to Services.
  • Context: ExecutionContext helpers (switchToHttp()) for platform-agnostic code.
  • Custom Decorators:
  • Avoid: @Request() req -> req.user (Not type-safe).
  • Pattern: Create typed decorators like @CurrentUser(), @DeviceIp().
typescript
import { RequestWithUser } from 'src/common/interfaces/request.interface';

export const CurrentUser = createParamDecorator(
  (data: unknown, ctx: ExecutionContext): User => {
    const request = ctx.switchToHttp().getRequest<RequestWithUser>();
    return request.user;
  },
);

DTOs & Validation

  • Strictness:
  • whitelist: true: Strip properties without decorators.
  • Critical: forbidNonWhitelisted: true: Throw error if unknown properties exist.
  • Transformation:
  • transform: true: Auto-convert primitives (String '1' -> Number 1) and instantiate DTO classes.
  • Documentation:
  • Swagger Plugin: @nestjs/swagger CLI plugin in nest-cli.json auto-detects DTO properties — no manual @ApiProperty().

Interceptors (Response Mapping)

  • Map responses in Interceptors, not Controllers.
  • map() wraps success responses (e.g. { data: T }).
  • See API Standards for PageDto and ApiResponse.
  • catchError() maps low-level errors (DB constraints) to HttpException (e.g. ConflictException) before global filter.

Services & Business Logic

  • Singleton: Default.
  • Stateless: No request-specific state in class properties unless Scope.REQUEST.

Pipes & Validation

  • Global: Register ValidationPipe globally.
  • Route Params: Fail fast. Always use ParseIntPipe, ParseUUIDPipe on all ID parameters.
typescript
@Get(':id')
findOne(@Param('id', ParseIntPipe) id: number) { ... }

Lifecycle Events

  • Init: Use OnModuleInit for connection setup.
  • Destroy: Use OnApplicationShutdown for cleanup. (Requires enableShutdownHooks()).

Anti-Patterns

  • No business logic in controllers: Delegate everything to Services; controllers only parse and respond.
  • No req.user access: Create typed @CurrentUser() decorator instead of accessing raw req.
  • No REQUEST scope by default: Use SINGLETON; it makes entire injection chain request-scoped.

References

© HoangNguyen0403, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 2 other files (references) in skills/nestjs/nestjs-controllers-services of HoangNguyen0403/agent-skills-standard.

  • SKILL.md
  • evals/evals.json
  • references/REFERENCE.md

Open the folder on GitHubat commit b529c2d

Compare with similar skills

Nestjs Controllers Services next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Nestjs Controllers Services compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Nestjs Controllers Services this skillHoangNguyen0403/agent-skills-standard572—~723Automated safety check: PassMIT
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Nestjs Trpctrycompai/crm11k—~2.8kAutomated safety check: PassMIT
Twenty Syncable Entity Wiringtwentyhq/twenty58k—~2.9kAutomated safety check: PassCustom licence
Backendredis/RedisInsight8.9k—~1.6kAutomated safety check: PassCustom licence

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Works with

Categories

Questions about Nestjs Controllers Services

What does Nestjs Controllers Services do?

Separate Controllers from Services and build Custom Decorators in NestJS. Nestjs Controllers Services is an agent skill from HoangNguyen0403/agent-skills-standard. Separate Controllers from Services and build Custom Decorators in NestJS.

When should I use Nestjs Controllers Services?

Nestjs Controllers Services fits situations like: defining NestJS controllers; custom parameter decorators.

How do I install Nestjs Controllers Services in Claude Code?

Run `npx skills add HoangNguyen0403/agent-skills-standard --skill nestjs-controllers-services -a claude-code`. Or copy the skill folder (skills/nestjs/nestjs-controllers-services in HoangNguyen0403/agent-skills-standard) into .claude/skills/nestjs-controllers-services in your project. Claude Code loads it when a task matches its description.

How do I install Nestjs Controllers Services in Codex?

Run `npx skills add HoangNguyen0403/agent-skills-standard --skill nestjs-controllers-services -a codex`. Or copy the skill folder (skills/nestjs/nestjs-controllers-services in HoangNguyen0403/agent-skills-standard) into .agents/skills/nestjs-controllers-services in your project. Codex loads it when a task matches its description.

Can I use Nestjs Controllers Services in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add HoangNguyen0403/agent-skills-standard --skill nestjs-controllers-services -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/nestjs-controllers-services, .gemini/skills/nestjs-controllers-services, .github/skills/nestjs-controllers-services and .opencode/skills/nestjs-controllers-services in your project.

What does Nestjs Controllers Services need to run?

SKILL.md names no scripts, command-line tools or credentials: Nestjs Controllers Services is instructions for the agent only.

Does Nestjs Controllers Services access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Nestjs Controllers Services safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Nestjs Controllers Services use?

Nestjs Controllers Services is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Nestjs Controllers Services use?

About 723 tokens (SKILL.md is roughly 2.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 377 tokens, read only when the agent opens those files.

What are the alternatives to Nestjs Controllers Services?

Skills that share tags, products or a category with Nestjs Controllers Services: Nestjs Best Practices (rolling-scopes/rsschool-app, 10k stars), Twenty Syncable Entity Validation (twentyhq/twenty, 58k stars), Nestjs Trpc (trycompai/crm, 11k stars) and Twenty Syncable Entity Wiring (twentyhq/twenty, 58k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Nestjs Controllers Services?

HoangNguyen0403 (a GitHub user) maintains it in HoangNguyen0403/agent-skills-standard, which has 572 GitHub stars. The repository holds 211 skills in this directory. The repository was last updated on October 9, 2026.

Source: HoangNguyen0403/agent-skills-standard on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.