frontend-developer

frontend-developer is an agent for Claude Code from CronusL-1141/AI-company. It costs 27 tokens per session (230 once invoked), scanned A, original, MIT.

A front-end development agent for building React, Vue, and modern web interfaces. Front-end work covers the parts of a website that users see and interact with.

In plain words
What is it for?
Use it to build components and pages, support phones and desktops, improve Core Web Vitals (standard measures of loading and visual stability), add keyboard and screen-reader support, and optimize front-end structure.
Why use it?
It helps turn designs and requirements into responsive, accessible interfaces while checking browser behavior, loading speed, and code quality.

Agent for Claude Code

Written for Claude Code: installed under .claude/. Also seen: model in frontmatter.

Good fit Use it to build components and pages, support phones and desktops, improve Core Web Vitals (standard measures of loading and visual stability), add keyboard and screen-reader support, and optimize front-end structure.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/cronusl-1141/ai-company/engineering-frontend-developer
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/CronusL-1141/AI-company

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-developer

README.md
[![agentmods](https://agentmods.dev/badge/agents/cronusl-1141/ai-company/engineering-frontend-developer/github.svg)](https://agentmods.dev/agents/cronusl-1141/ai-company/engineering-frontend-developer)
Your own site
<a href="https://agentmods.dev/agents/cronusl-1141/ai-company/engineering-frontend-developer"><img src="https://agentmods.dev/badge/agents/cronusl-1141/ai-company/engineering-frontend-developer/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-developer

Your own site · 80×15
<a href="https://agentmods.dev/agents/cronusl-1141/ai-company/engineering-frontend-developer"><img src="https://agentmods.dev/badge/agents/cronusl-1141/ai-company/engineering-frontend-developer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 27 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 230 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 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 5.1 $0.00027 $0.00230
Opus 5.5 $0.00011 $0.00092
Sonnet 5.5 $0.00005 $0.00046
Haiku 4.5 $0.00003 $0.00023

Measured 24d ago against content hash e5e7a439349d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

frontend-developer 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 24d 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.

.claude/agents/engineering-frontend-developer.md · 19 lines

What it actually says

你是前端开发工程师,负责 Web 界面。

完成验证:UI 改动用 Playwright 实际打开页面、走一遍核心操作路径并截图;出现 console error、白屏或数据不显示,修完重截,报告里附截图路径。

审查由派工方另行安排,不必自己再派审查者复核产出。超出任务范围的发现写进汇报的后续项,不顺手改:顺手的改动落在派工方的审查范围之外。

本仓库(AI Team OS)

  • 前端在 dashboard/(React),截图存到 test-screenshots/。
  • 开发服务器端口以 dashboard/vite.config.ts 的 server.port 为准(当前 5174,不是 vite 默认的 5173)。
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. 24d ago Changed · +5 lines · -25 tokens per session e5e7a439349d
  2. 1mo ago Changed · -156 lines 47c69670804f
  3. 1mo ago First seen · 170 lines · 52 tokens per session scan A 3729750f7148

Subscribe to this mod's changes

frontend-developer is an agent published in the GitHub repository CronusL-1141/AI-company (373 stars, last pushed 13d ago), licensed MIT. It adds 27 tokens to every session and 230 once invoked, about $0.0001 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.

Related

Other agents, from other repositories

rn-code-architect

Designs implementation blueprints for React Native features by analyzing existing codebase patterns, then providing specific files to create/modify, component designs, testID placement, store slice design, and build sequences. Triggers: "design the architecture", "plan the implementation", "create a blueprint", "what…

Lykhoyda/rn-dev-agent · 238 tokens

wiki-writer

Create or update wiki pages — autonomous ingest from any source, autonomous update. Auto-creates .wiki/ if missing.

Oshayr/LLM-Wiki · 28 tokens

paqad-documentation-sync

You are the paqad documentationsync stage agent. You run one stage of one feature-development change in your own isolated context and then return. Your job: sync the canonical docs the change affects.

Eliyce/paqad-ai · 26 tokens

Workflow Architect

Workflow design specialist who maps complete workflow trees for every system, user journey, and agent interaction — covering happy paths, all branch conditions, failure modes, recovery paths, handoff contracts, and observable states to produce build-ready specs that agents can implement against and QA can test against.

andywxy1/ceo-plugin · 59 tokens

Studio Producer

Senior strategic leader specializing in high-level creative and technical project orchestration, resource allocation, and multi-project portfolio management. Focused on aligning creative vision with business objectives while managing complex cross-functional initiatives and ensuring optimal studio operations.

andywxy1/ceo-plugin · 47 tokens

build-agent

File implementation and modification specialist.

fentas/cuite · 8 tokens