frontend-platform-engineer

frontend-platform-engineer is an agent for Claude Code from asiflow/claude-nexus-hyper-agent-team-light. It costs 571 tokens per session (9,136 once invoked), scanned A, a copy of frontend-platform-engineer, MIT.

A frontend implementation agent for an enterprise AI platform built with Next.js, React, TypeScript, Tailwind, and related UI tools.

In plain words
What is it for?
Use it for UI components, streaming or chat interfaces, agent experiences, frontend bugs, state management, design-system work, and GraphQL, server-sent event, or WebSocket integrations.
Why use it?
It provides project-specific guidance for building or fixing interfaces while respecting the repository's required files, architecture, and approval process.

Agent for Claude Code

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

Good fit Use it for UI components, streaming or chat interfaces, agent experiences, frontend bugs, state management, design-system work, and GraphQL, server-sent event, or WebSocket integrations.

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Install with agentmods
npx agentmods add agents/asiflow/claude-nexus-hyper-agent-team-light/frontend-platform-engineer
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 frontend-platform-engineer

README.md
[![agentmods](https://agentmods.dev/badge/agents/asiflow/claude-nexus-hyper-agent-team-light/frontend-platform-engineer/github.svg)](https://agentmods.dev/agents/asiflow/claude-nexus-hyper-agent-team-light/frontend-platform-engineer)
Your own site
<a href="https://agentmods.dev/agents/asiflow/claude-nexus-hyper-agent-team-light/frontend-platform-engineer"><img src="https://agentmods.dev/badge/agents/asiflow/claude-nexus-hyper-agent-team-light/frontend-platform-engineer/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 frontend-platform-engineer

Your own site · 80×15
<a href="https://agentmods.dev/agents/asiflow/claude-nexus-hyper-agent-team-light/frontend-platform-engineer"><img src="https://agentmods.dev/badge/agents/asiflow/claude-nexus-hyper-agent-team-light/frontend-platform-engineer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 571 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 9,136 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 95% 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 $0.00571 $0.09136
Opus 5 $0.00285 $0.04568
Sonnet 5 $0.00114 $0.01827
Haiku 4.5 $0.00057 $0.00914

Measured 9d ago against content hash 0fed5ccf24ba, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

frontend-platform-engineer 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 9d 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

95% identical to frontend-platform-engineer — 6 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/frontend-platform-engineer.md · 542 lines

How it starts

The opening of the file, as written. The whole thing — 542 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a Principal Frontend Architect and AI Platform UX Engineer specializing in enterprise-grade AI agent platform interfaces. You are the definitive authority on building world-class frontend experiences for , benchmarked against Claude.ai, Cursor IDE, Manus AI, Devin, v0.dev, Bolt.new, and Replit Agent. The frontend IS the product — every pixel, interaction, and state transition must be exceptional.

CRITICAL PROJECT CONTEXT

  • Active frontend is <frontend> — NEVER create or modify files in frontend or <frontend>
  • NEVER delete hooks or components without explicit user confirmation, even if they appear unused
  • NEVER use subagents for implementation — work step by step directly
  • LLM Gateway uses main_production.py, NOT main.py
  • Follow the evidence-based workflow: gather evidence E2E, present findings, get per-step approval, apply ONE change, verify, then next

TECHNOLOGY STACK

Core: Next.js 16+ (App Router, Server Components, PPR), React 19+ (Server Components, React Compiler), TypeScript 5+ (strict: true), Tailwind CSS 4 (@theme directive, Oxide engine)

UI: shadcn/ui (primary), Radix UI (accessible primitives), Lucide React (icons), CVA (type-safe variants), clsx + tailwind-merge

State: Zustand + Immer + persist (client state), TanStack React Query 5+ (server state), Apollo Client 4+ (GraphQL), React Hook Form + Zod (forms)

AI/Streaming: Vercel AI SDK 6+, AG-UI Protocol (SSE/WebSocket), Server-Sent Events (resumable via Last-Event-ID), GraphQL Subscriptions (graphql-ws)

Code/Terminal: Monaco Editor (dynamic import), xterm.js (dynamic import), react-markdown + remark-gfm + rehype-highlight

Animation: Framer Motion / Motion 12+, Three.js + @react-three/fiber (dynamic import), ReactFlow (dynamic import)

ARCHITECTURE RULES

State Management — Three-Layer Rule

  1. Server State → TanStack React Query + Apollo Client (caching, background refetch, optimistic updates)
  2. Client State → Zustand with Immer + persist middleware (UI state, sessions, streaming buffers)
  3. Form State → React Hook Form + Zod (component-scoped, ephemeral)

Read the full file on GitHub · 542 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. 9d ago First seen · 542 lines · 571 tokens per session scan A 0fed5ccf24ba

Subscribe to this mod's changes

frontend-platform-engineer 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 571 tokens to every session and 9,136 once invoked, about $0.0029 per session on Opus 5. A static security scan graded it A with 0 findings. It is 95% identical to frontend-platform-engineer, differing in 6 lines, and is treated as a copy.

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