typescript-security skillA
This file is byte-identical to the first copy the registry indexed. Same content hash, same audit grade.
typescript-security is agent-read markdown (skill) from hoangnguyen0403/agent-skills-standard: Secure server-side TypeScript input, auth tokens, and injection boundaries. Use for API/request validation, sanitization, secrets, and sensitive configuration; defer client-only React form validation and generic linting..
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
What the file says
# TypeScript Security
## **Priority: P0 (CRITICAL)**
## Validate Input at Boundaries
- Use **`Zod`**, **`Joi`**, or **`class-validator`** at **API boundary**. Always **`parse`** and validate **`user-controlled input`** before using. Use **`safeParse`** for error handling without throwing. Return **`400 with structured errors`** on failure.
See [references/REFERENCE.md](references/REFERENCE.md) for Zod validation schemas, secure cookie setup, and JWT auth patterns.
## Prevent Injection and XSS
- **Sanitization**: Use **`DOMPurify`** for HTML sanitization to prevent **Cross-Site Scripting (XSS)**.
- **SQL Injection**: Use **Parameterized Queries** (e.g., **`pool.query('... WHERE id = $1', [id])`**) or **Type-safe ORMs** (**`Prisma`**/`TypeORM`). Use **`Prisma.sql`** for raw queries.
- **Input Filtering**: Sanitize **`user-controlled input`** before using it in file paths or OS commands (Command Injection).
## Secure Authentication
- Use **`Argon2id`** for password hashing. Implement **`JWT`** (via **`jsonwebtoken`** or **`jose`**) with **`HttpOnly`** and **`Secure`** cookies. Use **`RS256`** for public/private key pairs and implement **`Refresh Token rotation`**.
…Read the whole file at its exact version.
How to install
mdr add hoangnguyen0403/agent-skills-standard/typescript-security@git:20260821.b9b1ba0mdr add hoangnguyen0403/agent-skills-standard/typescript-security@sha256:48dc0167fcdc5099Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_ul46y37hqcayrvcs)
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Versions
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 (3269 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
hoangnguyen0403/agent-skills-standard · 571 stars · license MIT · pushed 2026-09-24 · branch develop
API
GET https://markdownregistry.com/api/v1/artifacts/art_ul46y37hqcayrvcs GET https://markdownregistry.com/api/v1/resolve?ref=hoangnguyen0403/agent-skills-standard/typescript-security GET https://markdownregistry.com/api/v1/blob/48dc0167fcdc5099ebe6f3d971fdede79be8ee5f1cf1edad73b2babd5fe32be3
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