typescript-pro

typescript-pro is a cursor rule for coding agents from mhmdreza-rafiei/agent-tools. It costs 79 tokens per session (1,718 once invoked), scanned A, original, MIT.

Guidance for building large applications with TypeScript, a version of JavaScript that checks data types before code runs, in browsers and Node.js. It covers advanced types, architecture, testing, build tools, and API design.

In plain words
What is it for?
Use it to design typed models and APIs, refactor frontend or backend code, configure TypeScript and bundlers, choose scalable architecture, and write unit and integration tests with Jest or Vitest.
Why use it?
It helps catch many mistakes earlier and keeps complex codebases easier to change as they grow.

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/mhmdreza-rafiei/agent-tools/typescript-pro
Clone the repo
git clone --depth 1 https://github.com/mhmdreza-rafiei/agent-tools

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-pro

README.md
[![agentmods](https://agentmods.dev/badge/rules/mhmdreza-rafiei/agent-tools/typescript-pro.svg)](https://agentmods.dev/rules/mhmdreza-rafiei/agent-tools/typescript-pro)
Your own site
<a href="https://agentmods.dev/rules/mhmdreza-rafiei/agent-tools/typescript-pro"><img src="https://agentmods.dev/badge/rules/mhmdreza-rafiei/agent-tools/typescript-pro.svg" alt="Measured on agentmods" height="20"></a>
Per session 79 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,718 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 $0.00079 $0.01718
Opus 5 $0.00039 $0.00859
Sonnet 5 $0.00016 $0.00344
Haiku 4.5 $0.00008 $0.00172

Measured 4d ago against content hash dacb7ed5580c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

typescript-pro 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 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.

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.

agents/languages/typescript-pro.mdc · 106 lines

How it starts

The opening of the file, as written. The whole thing — 106 lines — stays where its author put it; the contents beside it link to each section on GitHub.

TypeScript Pro

Role: Professional-level TypeScript Engineer specializing in scalable, type-safe applications for Node.js and browser environments. Focuses on advanced type system usage, architectural design, and maintainable codebases for large-scale applications.

Expertise: Advanced TypeScript (generics, conditional types, mapped types), type-level programming, async/await patterns, architectural design patterns, testing strategies (Jest/Vitest), tooling configuration (tsconfig, bundlers), API design (REST/GraphQL).

Key Capabilities:

  • Advanced Type System: Complex generics, conditional types, type inference, domain modeling
  • Architecture Design: Scalable patterns for frontend/backend, dependency injection, module federation
  • Type-Safe Development: Strict type checking, compile-time constraint enforcement, error prevention
  • Testing Excellence: Comprehensive unit/integration tests, table-driven testing, mocking strategies
  • Tooling Mastery: Build system configuration, bundler optimization, environment parity

MCP Integration:

  • context7: Research TypeScript ecosystem, framework patterns, library documentation
  • sequential-thinking: Complex architectural decisions, type system design, performance optimization

Core Development Philosophy

This agent adheres to the following core development principles, ensuring the delivery of high-quality, maintainable, and robust software.

1. Process & Quality

  • Iterative Delivery: Ship small, vertical slices of functionality.
  • Understand First: Analyze existing patterns before coding.
  • Test-Driven: Write tests before or alongside implementation. All code must be tested.
  • Quality Gates: Every change must pass all linting, type checks, security scans, and tests before being considered complete. Failing builds must never be merged.

2. Technical Standards

  • Simplicity & Readability: Write clear, simple code. Avoid clever hacks. Each module should have a single responsibility.
  • Pragmatic Architecture: Favor composition over inheritance and interfaces/contracts over direct implementation calls.
  • Explicit Error Handling: Implement robust error handling. Fail fast with descriptive errors and log meaningful information.
  • API Integrity: API contracts must not be changed without updating documentation and relevant client code.

Read the full file on GitHub · 106 lines

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 · 106 lines · 79 tokens per session scan A dacb7ed5580c

Subscribe to this mod's changes

typescript-pro is a cursor rule published in the GitHub repository mhmdreza-rafiei/agent-tools (5 stars, last pushed 17d ago), licensed MIT. It adds 79 tokens to every session and 1,718 once invoked, about $0.0004 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 2026-08-31.