nestjs-security-validator SKILL.md skillA
nestjs-security-validator from smicolon/ai-kit is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add smicolon/ai-kit/nestjs-security-validator@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- smicolon/ai-kit
- Path
packs/nestjs/skills/nestjs-security-validator/SKILL.md- Versions recorded
- 1
- Latest version
- v1.0.0, committed Sep 3, 2026
- Size
- 2,514 bytes
- Repository stars
- 7
- License
- MIT
Enforces NestJS security best practices including input validation with class-validator, rate limiting with @nestjs/throttler, route authentication guards, Helmet headers, and CORS configuration.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# NestJS Security Validator
Enforces security defaults and defensive programming across NestJS applications.
## 1. Global Input Validation (ValidationPipe)
In `main.ts`, always configure `ValidationPipe` with stripping and rejection of unwhitelisted properties to prevent parameter injection:
```typescript
// main.ts
import { ValidationPipe } from '@nestjs/common'
async function bootstrap() {
const app = await NestFactory.create(AppModule)
app.useGlobalPipes(
new ValidationPipe({
whitelist: true, // Strips properties without decorators in DTO
forbidNonWhitelisted: true, // Throws error if unknown property is sent
transform: true, // Auto-transforms payloads to DTO instance types
transformOptions: {
enableImplicitConversion: false, // Explicit types only
},
}),
)
}
```
---
## 2. Rate Limiting (`@nestjs/throttler` v5+)
Prevent brute-force and DoS attacks:
```typescript
// app.module.ts
import { ThrottlerModule, ThrottlerGuard } from '@nestjs/throttler'
import { APP_GUARD } from '@nestjs/core'
@Module({
imports: [
ThrottlerModule.forRoot([
{
name: 'short',
…Read the whole file at its exact version.
How to install
mdr add smicolon/ai-kit/nestjs-security-validator@sha256:af950e02e3712c4cThe line at the top of this page pins the label v1.0.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_upnfhctmwk5pbgz3)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 3, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (2514 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
smicolon/ai-kit · 7 stars · license MIT · pushed 2026-09-15 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_upnfhctmwk5pbgz3 GET https://markdownregistry.com/api/v1/resolve?ref=smicolon/ai-kit/nestjs-security-validator GET https://markdownregistry.com/api/v1/blob/af950e02e3712c4c8e97a73498d6356b17fafd84cd4c43d7bcb0ad77284a1643
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.