typescript-expert

typescript-expert is an agent for Claude Code from asiflow/claude-nexus-hyper-agent-team-light. It costs 465 tokens per session (6,672 once invoked), scanned A, a copy of typescript-expert, MIT.

A specialist for reviewing TypeScript, React, and Next.js code. It focuses on type safety, rendering behaviour, and framework design, and gives recommendations instead of writing implementation code.

In plain words
What is it for?
Use it for peer-level reviews of TypeScript applications, React components, Next.js features, type models, and rendering performance.
Why use it?
It finds frontend-specific problems that general reviews may miss, such as unsafe type escapes, unnecessary browser-side code, or avoidable re-renders.

Agent for Claude Code

Written for Claude Code: ${CLAUDE_PROJECT_DIR} variable. Also seen: model in frontmatter; reads .claude/ paths; mentions subagents.

Good fit Use it for peer-level reviews of TypeScript applications, React components, Next.js features, type models, and rendering performance.

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Install with agentmods
npx agentmods add agents/asiflow/claude-nexus-hyper-agent-team-light/typescript-expert
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/asiflow/claude-nexus-hyper-agent-team-light

Made for: Claude Code.

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-expert

README.md
[![agentmods](https://agentmods.dev/badge/agents/asiflow/claude-nexus-hyper-agent-team-light/typescript-expert.svg)](https://agentmods.dev/agents/asiflow/claude-nexus-hyper-agent-team-light/typescript-expert)
Your own site
<a href="https://agentmods.dev/agents/asiflow/claude-nexus-hyper-agent-team-light/typescript-expert"><img src="https://agentmods.dev/badge/agents/asiflow/claude-nexus-hyper-agent-team-light/typescript-expert.svg" alt="Measured on agentmods" height="20"></a>
Per session 465 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 6,672 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 $0.00465 $0.06672
Opus 5 $0.00233 $0.03336
Sonnet 5 $0.00093 $0.01334
Haiku 4.5 $0.00047 $0.00667

Measured 8d ago against content hash 48d8f5bf3581, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

typescript-expert 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 8d 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-expert — 8 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.

agents/typescript-expert.md · 462 lines

How it starts

The opening of the file, as written. The whole thing — 462 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are TypeScript Expert — a Distinguished TypeScript/React/Next.js Engineer and domain authority. You possess TC39 proposal-level type system knowledge, React core team-level understanding of the rendering engine, and Vercel-internal Next.js architecture expertise. You are the consultant who reviews Vercel's Next.js internals and finds issues their own engineers missed.

You NEVER write implementation code. You review, critique, and recommend. Your findings go to frontend-platform-engineer for remediation. You are the senior consultant who makes the builder's code excellent.


CORE AXIOMS (Non-Negotiable)

Axiom Meaning
The type system is your ally TypeScript's type system can express nearly anything. If you're fighting it, your model is wrong.
Zero any, zero as, zero @ts-ignore These are not pragmatic shortcuts — they're holes in your safety net. Every one is a finding.
Server Components by default Client components are opt-in. Every "use client" must justify its existence.
Rendering is expensive Every unnecessary re-render is stolen CPU from the user. Measure, memoize, stabilize.
The ecosystem moves fast Yesterday's best practice may be today's antipattern. Research before recommending.
Evidence-based review Every finding cites file:line with TypeScript handbook, React docs, or Next.js docs precedent.

CRITICAL PROJECT CONTEXT

  • — Next.js 16+, React 19+, TypeScript 5+ (strict: true), Tailwind CSS 4, shadcn/ui, Zustand + Apollo Client, SSE/WebSocket streaming
  • Brand: — green, silver, . FORBIDDEN: accent-colors-to-avoid
  • **Active frontend is the frontend package
  • LLM Gateway uses main_production.py, NOT main.py
  • NEVER delete hooks or components without explicit user confirmation
  • NEVER use subagents for implementation — work step by step directly

Read the full file on GitHub · 462 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. 8d ago First seen · 462 lines · 465 tokens per session scan A 48d8f5bf3581

Subscribe to this mod's changes

typescript-expert is an agent published in the GitHub repository asiflow/claude-nexus-hyper-agent-team-light (12 stars, last pushed 4mo ago), licensed MIT. It adds 465 tokens to every session and 6,672 once invoked, about $0.0023 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to typescript-expert, differing in 8 lines, and is treated as a copy.

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