howto-code-in-typescript

howto-code-in-typescript is a skill for Claude Code, Codex from ed3dai/ed3d-plugins. It costs 57 tokens per session (10,158 once invoked), scanned A, original, no licence file.

A guide to writing and reviewing TypeScript code, including type declarations, functions, naming, immutability, and type safety.

In plain words
What is it for?
Use it when writing TypeScript, reviewing implementations, or deciding how to define types, functions, and names.
Why use it?
It helps keep TypeScript decisions consistent and reduces mistakes caused by unsafe types or changing data unexpectedly.

Skill for Claude CodeCodex

Part of the ed3d-house-style plugin — 10 skills shipped together

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.

agentmods
npx agentmods add skills/ed3dai/ed3d-plugins/howto-code-in-typescript
Any agent
npx skills add ed3dai/ed3d-plugins --skill howto-code-in-typescript
Clone the repo
git clone --depth 1 https://github.com/ed3dai/ed3d-plugins

Made for: Claude Code, Codex.

Or install ed3d-house-style, the plugin that ships this one along with the rest of its 10 skills.

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 howto-code-in-typescript

README.md
[![agentmods](https://agentmods.dev/badge/skills/ed3dai/ed3d-plugins/howto-code-in-typescript.svg)](https://agentmods.dev/skills/ed3dai/ed3d-plugins/howto-code-in-typescript)
Your own site
<a href="https://agentmods.dev/skills/ed3dai/ed3d-plugins/howto-code-in-typescript"><img src="https://agentmods.dev/badge/skills/ed3dai/ed3d-plugins/howto-code-in-typescript.svg" alt="Measured on agentmods" height="20"></a>
Per session 57 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 10,158 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
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 $0.00057 $0.10158
Opus 5 $0.00028 $0.05079
Sonnet 5 $0.00011 $0.02032
Haiku 4.5 $0.00006 $0.01016

Measured 4d ago against content hash 18fe83cdd2be, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

howto-code-in-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 4d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

fetch(url).then(data => processData(data));
plugins/ed3d-house-style/skills/howto-code-in-typescript/SKILL.md · 1,599 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 4d ago First seen · 1,599 lines · 57 tokens per session scan A 18fe83cdd2be

Subscribe to this mod's changes

howto-code-in-typescript is a skill published in the GitHub repository ed3dai/ed3d-plugins (248 stars, last pushed 2mo ago), with no licence file. It adds 57 tokens to every session and 10,158 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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