sota-javascript-typescript

sota-javascript-typescript is a skill for Claude Code from martinholovsky/SOTA-skills. It costs 133 tokens per session (2,895 once invoked), scanned A, original, CC-BY-4.0.

A JavaScript and TypeScript engineering guide covering current language practices, type design, asynchronous code, Node.js, front-end work, and security.

In plain words
What is it for?
Use it for JavaScript or TypeScript development and review involving strict types, async behavior, Node.js, React, or common security risks.
Why use it?
The excerpt provides no specific instructions or supported task details beyond those topic areas.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the sota-skills plugin — 43 skills, 5 commands, 4 hooks shipped together

Good fit Use it for JavaScript or TypeScript development and review involving strict types, async behavior, Node.js, React, or common security risks.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/martinholovsky/sota-skills/sota-javascript-typescript
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 martinholovsky/SOTA-skills --skill sota-javascript-typescript
Clone the repo
git clone --depth 1 https://github.com/martinholovsky/SOTA-skills

Made for: Claude Code.

Or install sota-skills, the plugin that ships this one along with the rest of its 43 skills, 5 commands, 4 hooks.

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 sota-javascript-typescript

README.md
[![agentmods](https://agentmods.dev/badge/skills/martinholovsky/sota-skills/sota-javascript-typescript/github.svg)](https://agentmods.dev/skills/martinholovsky/sota-skills/sota-javascript-typescript)
Your own site
<a href="https://agentmods.dev/skills/martinholovsky/sota-skills/sota-javascript-typescript"><img src="https://agentmods.dev/badge/skills/martinholovsky/sota-skills/sota-javascript-typescript/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.

agentmods 80×15 button for sota-javascript-typescript

Your own site · 80×15
<a href="https://agentmods.dev/skills/martinholovsky/sota-skills/sota-javascript-typescript"><img src="https://agentmods.dev/badge/skills/martinholovsky/sota-skills/sota-javascript-typescript.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 133 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,895 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 $0.00133 $0.02895
Opus 5.5 $0.00053 $0.01158
Sonnet 5.5 $0.00027 $0.00579
Haiku 4.5 $0.00013 $0.00290

Measured today against content hash a0821c7461b8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

sota-javascript-typescript 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 today.

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.

Runs shell commandslowCapability

Expected in a hook, worth knowing in a rule or an instructions file.

| [rules/05-security.md](rules/05-security.md) | any security-relevant code or audit: XSS sinks (incl. **string-to-code DOM APIs**: `setAttribute('on…')`, script text, Lit `unsafe*`), CSP, **server-side template engines*
skills/sota-javascript-typescript/SKILL.md · 75 lines

The source is not reproduced here

Licensed CC-BY-4.0

The repository is licensed CC-BY-4.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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. today Changed · +2 lines a0821c7461b8
  2. 12d ago Changed 240735e7dfd6
  3. 28d ago Changed bcee58c474cc
  4. 29d ago Changed · +2 lines 967496896102
  5. 1mo ago Changed fcc199354720
  6. 1mo ago Changed d503301ab49e
  7. 1mo ago First seen · 71 lines · 133 tokens per session scan A bb058d90fc0f

Subscribe to this mod's changes

sota-javascript-typescript is a skill published in the GitHub repository martinholovsky/SOTA-skills (23 stars, last pushed today), licensed CC-BY-4.0. It adds 133 tokens to every session and 2,895 once invoked, about $0.0005 per session on Opus 5.5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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