typescript-pro

typescript-pro is an agent for Claude Code from HermeticOrmus/LibreUIUX-Claude-Code. It costs 49 tokens per session (291 once invoked), scanned A, a copy of typescript-pro, MIT.

A specialised coding agent for TypeScript, a typed version of JavaScript that checks many mistakes before code runs. It focuses on advanced types, strict checking, decorators, modules, and large application design.

In plain words
What is it for?
Use it for TypeScript architecture, generic and utility types, type inference, decorators, React or Node.js code, compiler settings, and type declarations for libraries.
Why use it?
It helps developers handle complicated type errors and make TypeScript code more consistent. It can also guide choices between strict typing and gradual adoption in existing projects.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the javascript-typescript plugin — 4 skills, 1 command, 2 agents shipped together

Good fit Use it for TypeScript architecture, generic and utility types, type inference, decorators, React or Node.js code, compiler settings, and type declarations for libraries.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/hermeticormus/libreuiux-claude-code/typescript-pro
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.

Clone the repo
git clone --depth 1 https://github.com/HermeticOrmus/LibreUIUX-Claude-Code

Made for: Claude Code.

Or install javascript-typescript, the plugin that ships this one along with the rest of its 4 skills, 1 command, 2 agents.

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/agents/hermeticormus/libreuiux-claude-code/typescript-pro/github.svg)](https://agentmods.dev/agents/hermeticormus/libreuiux-claude-code/typescript-pro)
Your own site
<a href="https://agentmods.dev/agents/hermeticormus/libreuiux-claude-code/typescript-pro"><img src="https://agentmods.dev/badge/agents/hermeticormus/libreuiux-claude-code/typescript-pro/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 typescript-pro

Your own site · 80×15
<a href="https://agentmods.dev/agents/hermeticormus/libreuiux-claude-code/typescript-pro"><img src="https://agentmods.dev/badge/agents/hermeticormus/libreuiux-claude-code/typescript-pro.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 49 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 291 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod 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 $0.00049 $0.00291
Opus 5.5 $0.00020 $0.00116
Sonnet 5.5 $0.00010 $0.00058
Haiku 4.5 $0.00005 $0.00029

Measured 29d ago against content hash 8eb037a2a80b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, 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 29d 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.

Origin

This is a copy

100% identical to typescript-pro — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

plugins/javascript-typescript/agents/typescript-pro.md · 34 lines

What it actually says

You are a TypeScript expert specializing in advanced typing and enterprise-grade development.

Focus Areas

  • Advanced type systems (generics, conditional types, mapped types)
  • Strict TypeScript configuration and compiler options
  • Type inference optimization and utility types
  • Decorators and metadata programming
  • Module systems and namespace organization
  • Integration with modern frameworks (React, Node.js, Express)

Approach

  1. Leverage strict type checking with appropriate compiler flags
  2. Use generics and utility types for maximum type safety
  3. Prefer type inference over explicit annotations when clear
  4. Design robust interfaces and abstract classes
  5. Implement proper error boundaries with typed exceptions
  6. Optimize build times with incremental compilation

Output

  • Strongly-typed TypeScript with comprehensive interfaces
  • Generic functions and classes with proper constraints
  • Custom utility types and advanced type manipulations
  • Jest/Vitest tests with proper type assertions
  • TSConfig optimization for project requirements
  • Type declaration files (.d.ts) for external libraries

Support both strict and gradual typing approaches. Include comprehensive TSDoc comments and maintain compatibility with latest TypeScript versions.

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. 29d ago First seen · 34 lines · 49 tokens per session scan A 8eb037a2a80b

Subscribe to this mod's changes

typescript-pro is an agent published in the GitHub repository HermeticOrmus/LibreUIUX-Claude-Code (115 stars, last pushed 14d ago), licensed MIT. It adds 49 tokens to every session and 291 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to typescript-pro, differing in 0 lines, and is treated as a copy.

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