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.
git clone --depth 1 https://github.com/iloveitaly/llm-ide-rulesWrote 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.
[](https://agentmods.dev/rules/iloveitaly/llm-ide-rules/typescript)<a href="https://agentmods.dev/rules/iloveitaly/llm-ide-rules/typescript"><img src="https://agentmods.dev/badge/rules/iloveitaly/llm-ide-rules/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.
<a href="https://agentmods.dev/rules/iloveitaly/llm-ide-rules/typescript"><img src="https://agentmods.dev/badge/rules/iloveitaly/llm-ide-rules/typescript.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00458 | $0.00458 |
| Opus 5.5 | $0.00183 | $0.00183 |
| Sonnet 5.5 | $0.00092 | $0.00092 |
| Haiku 4.5 | $0.00046 | $0.00046 |
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 1mo 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.
What it actually says
Typescript
- Use
pnpmorpnpxand notnpmornpx.- Use
just js_shadcn,just pnpm, andjust js_lintinstead of executing these operations exactly. @just/javascript.just
- Use
- Node libraries are not available
- Use
lib/for generic code,utils/for project utilities,hooks/for React hooks, andhelpers/for page-specific helpers. - Prefer
function theName() {overconst theName = () => - Use
import { invariant } from @epic-web/invariantinstead of another invariant library - Use
requireEnv("VITE_THE_ENV_VAR")instead ofprocess.env.THE_ENV_VAR - Don't use
console.{log,error}. Usefrom ~/configuration/logging import logandlog.info("string", {structured: "log"})instead.
Here's how frontend code is organized in web/app/:
lib/not specific to the project. This code could be a separate package at some point.utils/project-specific code, but not specific to a particular page.helpers/page- or section-specific code that is not a component, hook, etc.hooks/react hooks.configuration/providers, library configuration, and other setup code.components/react components.ui/reusable ShadCN UI components (buttons, forms, etc.).shared/components shared across multiple pages.- create additional folders for route- or section-specific components.
Dates & Times
- Always use the ISO 8601 format when sending dates in an API request.
- Use
Temporalfor any date or time manipulation. You can assume it's available in the browser. - DateTime objects should always be converted to UTC before included in any API request. Never send a timestamp with the user's timezone.
- Unless otherwise specified, do not shift server-provided times based on the user's timezone.
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.
- 1mo ago Changed · -1 lines b6348dba816b
- 2mo ago First seen · 36 lines · 458 tokens per session scan A 379d420b4144
typescript is a cursor rule published in the GitHub repository iloveitaly/llm-ide-rules (13 stars, last pushed 4d ago), licensed MIT. It adds 458 tokens to every session, about $0.0018 per session on Opus 5.5. 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.
Other cursor rules, from other repositories
typescript-type-safety
Use when encountering TypeScript any types, type errors, or lax type checking - eliminates type holes and enforces strict type safety through proper interfaces, type guards, and module augmentation.
rule-01
This is test rule number in the large package scalability test.
roslyn-mcp-overview
RoslynMcpServer — architecture, layout, version, DI.
roslyn-mcp-build-sdk
SDK pinning, DotNet CLI, build/test parsers, MSBuild bitness.
roslyn-mcp-docs-agents
Docs sync AGENTS/README, agent conventions, PowerShell, secrets.
roslyn-mcp-tools
MCP tool mapping — skeleton vs decompile vs symbols vs build.