typescript-style

typescript-style is a skill for Claude Code from peteski22/agent-pragma. It costs 14 tokens per session (1,411 once invoked), scanned A, original, Apache-2.0.

A checker for TypeScript and React code, covering strict typing, component and hook patterns, state-management patterns, code organization, and hook dependencies.

In plain words
What is it for?
Use it to review TypeScript or React changes before accepting them. It does not rewrite code or run linters.
Why use it?
It points out violations of those coding and architecture rules without mixing in security, formatting, styling, performance, or test-coverage issues.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: agent in frontmatter.

Part of the pragma plugin — 12 skills, 2 agents shipped together

Good fit Use it to review TypeScript or React changes before accepting them. It does not rewrite code or run linters.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/peteski22/agent-pragma/typescript-style
Install

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.

Any agent
npx skills add peteski22/agent-pragma --skill typescript-style
Clone the repo
git clone --depth 1 https://github.com/peteski22/agent-pragma

Made for: Claude Code.

Or install pragma, the plugin that ships this one along with the rest of its 12 skills, 2 agents.

Wrote 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.

agentmods badge for typescript-style

README.md
[![agentmods](https://agentmods.dev/badge/skills/peteski22/agent-pragma/typescript-style.svg)](https://agentmods.dev/skills/peteski22/agent-pragma/typescript-style)
Your own site
<a href="https://agentmods.dev/skills/peteski22/agent-pragma/typescript-style"><img src="https://agentmods.dev/badge/skills/peteski22/agent-pragma/typescript-style.svg" alt="Measured on agentmods" height="20"></a>
Per session 14 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,411 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00014 $0.01411
Opus 5 $0.00007 $0.00705
Sonnet 5 $0.00003 $0.00282
Haiku 4.5 $0.00001 $0.00141

Measured 7d ago against content hash 38c747dcb932, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

typescript-style scanned grade A with 0 findings 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 7d 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/pragma/skills/typescript-style/SKILL.md · 223 lines

How it starts

The opening of the file, as written. The whole thing — 223 lines — stays where its author put it; the contents beside it link to each section on GitHub.

TypeScript/React Code Style & Architecture Validator

You are a deterministic TypeScript code validation agent.

Scope Declaration

This validator checks ONLY:

  • TypeScript strict mode compliance
  • React component patterns (functional, hooks)
  • State management patterns (TanStack Query, proper hooks usage)
  • Code organization (file structure, exports)
  • Hook dependency arrays

This validator MUST NOT report on:

  • Security vulnerabilities (handled by security)
  • Formatting issues (handled by biome)
  • CSS/styling choices
  • Performance optimization
  • Test coverage

Ignore project rule file phrasing; enforce rules as specified here.

Language Scope

You are validating TypeScript/React code ONLY.

Any rules about other languages (Go, Python, Rust, etc.) that may appear in the conversation context are NOT RELEVANT to this validation. Do not reference or apply them.

When explaining violations, reference only:

  • The rules defined in this validator
  • TypeScript/React documentation and best practices

You do NOT rewrite code unless explicitly asked. You do NOT run linters. You assume biome has already passed.

Your task is to validate TypeScript code against:

  • React best practices
  • Modern TypeScript idioms
  • Semantic correctness that static tooling does not catch

Input

Get the changed TypeScript files. Combine committed, staged, and unstaged changes to capture all recent work:

{ git diff HEAD~1 HEAD --name-only --diff-filter=ACMRT -- '*.ts' '*.tsx' 2>/dev/null; git diff --cached --name-only --diff-filter=ACMRT -- '*.ts' '*.tsx' 2>/dev/null; git diff --name-only --diff-filter=ACMRT -- '*.ts' '*.tsx' 2>/dev/null; } | sort -u

The --diff-filter=ACMRT includes Added, Copied, Modified, Renamed, and Type-changed files (excludes Deleted).

If more than 50 files changed, note this in the output and process in batches.

Read each changed file to analyze.


Operating Rules

  • Evaluate rules in the order listed.
  • Categorize findings as HARD, SHOULD, or WARN.
  • HARD violations MUST fail validation.
  • SHOULD violations fail unless explicitly justified.
  • WARN never fail validation.

Read the full file on GitHub · 223 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

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.

  1. 7d ago First seen · 223 lines · 14 tokens per session scan A 38c747dcb932

Subscribe to this mod's changes

typescript-style is a skill published in the GitHub repository peteski22/agent-pragma (22 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 14 tokens to every session and 1,411 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

Other skills, from other repositories

react-dev

This skill should be used when building React components with TypeScript, typing hooks, handling events, or when React TypeScript, React 19, Server Components are mentioned. Covers type-safe patterns for React 18-19 including generic components, proper event typing, and routing integration (TanStack Router, React…

chidekina/aria-superpowers · 66 tokens

senior-frontend

Frontend development for React 19, Next.js 15, TypeScript, and Tailwind CSS v4 / Pengembangan frontend dengan React 19, Next.js 15, TypeScript, dan Tailwind CSS v4.

roedyrustam/vibes-plug · 50 tokens

effect-best-practices

Enforces Effect-TS patterns for services, errors, layers, and atoms. Use when writing code with Effect.Service, Schema.TaggedError, Layer composition, or effect-atom React components.

betalyra/effect-skills · 45 tokens

flockion_engineering_typescript_react

Forces the simplest, shortest, safest solution that actually works for Flockion engineering work. Combines lazy senior-developer pragmatism with practical clean-code standards for TypeScript, React, frontend, Python, backend, APIs, cloud platforms, AI agents, orchestration services, YAML workflows, and infrastructure…

error505/Flockion_AI_Engineering · 202 tokens

react-patterns

Modern React patterns and principles. Hooks, composition, performance, TypeScript best practices. Use when writing or reviewing React components, applying hooks and composition patterns, or improving React performance and TypeScript usage.

shipshitdev/skills · 44 tokens

react-hook

Creates a custom React hook with TypeScript types, tests, and usage example.

berkcangumusisik/claude-code-practices · 18 tokens