typescript

A set of optional rules for writing TypeScript, a programming language that adds type checking to JavaScript. The rules are not always applied.

In plain words
What is it for?
Use it when a project needs its TypeScript development rules applied.
Why use it?
It provides TypeScript-specific guidance during development, though the available description does not say what individual rules it contains.

Cursor rule

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 rules/ranyitz/aicm/typescript
Clone the repo
git clone --depth 1 https://github.com/ranyitz/aicm
Per session 0 Nothing until a file matches its globs; then the whole rule loads.
When invoked 37 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00000 $0.00037
Opus 5 $0.00000 $0.00018
Sonnet 5 $0.00000 $0.00007
Haiku 4.5 $0.00000 $0.00004

Measured 2d ago against content hash a511c2f560fe, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

typescript 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 2d 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.

tests/fixtures/presets-from-file/preset-rules/typescript.mdc · 10 lines

What it actually says

TypeScript Rule

name: TypeScript Best Practices description: Rules for TypeScript development alwaysApply: false

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. 2d ago First seen · 10 lines · 0 tokens per session scan A a511c2f560fe

Subscribe to this mod's changes

typescript is a cursor rule published in the GitHub repository ranyitz/aicm (36 stars, last pushed 5mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 37 tokens. 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.