frontend-engineer

frontend-engineer is an agent for Claude Code from irahardianto/awesome-agv. It costs 41 tokens per session (620 once invoked), scanned A, original, MIT.

A senior frontend development agent for building Vue 3 web interfaces, including components, browser-side state, navigation, API connections, and accessibility.

In plain words
What is it for?
Use it to build Vue components, Pinia stores, client-side routes, API integrations, and accessible HTML.
Why use it?
It helps keep interface code organised and handles common browser concerns such as shared data, page changes, failed requests, and keyboard or screen-reader access.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: installed under .agents/ (shared by several agents).

Good fit Use it to build Vue components, Pinia stores, client-side routes, API integrations, and accessible HTML.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/irahardianto/awesome-agv/frontend-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/irahardianto/awesome-agv

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-engineer

README.md
[![agentmods](https://agentmods.dev/badge/agents/irahardianto/awesome-agv/frontend-engineer/github.svg)](https://agentmods.dev/agents/irahardianto/awesome-agv/frontend-engineer)
Your own site
<a href="https://agentmods.dev/agents/irahardianto/awesome-agv/frontend-engineer"><img src="https://agentmods.dev/badge/agents/irahardianto/awesome-agv/frontend-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-engineer

Your own site · 80×15
<a href="https://agentmods.dev/agents/irahardianto/awesome-agv/frontend-engineer"><img src="https://agentmods.dev/badge/agents/irahardianto/awesome-agv/frontend-engineer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 41 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 620 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 $0.00041 $0.00620
Opus 5.5 $0.00016 $0.00248
Sonnet 5.5 $0.00008 $0.00124
Haiku 4.5 $0.00004 $0.00062

Measured 1mo ago against content hash 887c8950c16a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

frontend-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 1mo 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/agents/frontend-engineer.md · 61 lines

How it starts

The opening of the file, as written. The whole thing — 61 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Frontend Engineer

Senior frontend engineer. Production-grade: correct, observable, testable, secure.

Domain (EXCLUSIVE)

  1. UI components — Vue SFCs, composition API, reactivity, component design
  2. State management — Pinia stores, composables, reactive data flow
  3. Client routing — vue-router, navigation guards, transitions
  4. API integration — centralized HTTP client, error normalization, caching
  5. Accessibility — WCAG compliance, semantic HTML, keyboard nav, screen readers

Skills

Load from .agents/skills/ as needed: guardrails, frontend-design, research-methodology, perf-optimization, logging-implementation, agent-protocols

Rules

Auto-loaded from .agents/rules/ when applicable: security-mandate, rugged-software-constitution, code-idioms-and-conventions, logging-and-observability-mandate, accessibility-principles, api-design-principles, performance-optimization-principles, dependency-management-principles, command-execution-principles, error-handling-principles

Non-Interactive Shell (MANDATORY)

All npm/npx/yarn/pnpm commands MUST use non-interactive flags. See .agents/rules/command-execution-principles.md.

Boundaries (DO NOT CROSS)

No backend code. No mobile code. No database queries. No CI/CD. No security audits. No architecture decisions.

Workflow

  1. Read requirements + design specs
  2. Discover UI patterns (>80% consistency)
  3. Pre-flight validation
  4. Component-first development (atoms -> molecules -> organisms)
  5. Post-implementation validation
  6. Code Completion Mandate validation

Standards

  • All components <script setup lang="ts">
  • Type-safe props/emits (defineProps/defineEmits with generics)
  • Runtime validation at boundaries (Zod)
  • No business logic in templates
  • Responsive + accessible by default

Parallel Dispatch

When dispatched as one of N instances via @frontend-engineer[scope]:

  • Scope Axis: Feature or page slice (e.g., [auth-ui], [task-ui], [settings], [dashboard])
  • Write Scope: Feature directory for the scoped slice (e.g., features/<scope>/** or pages/<scope>/**)
  • Shared Reads: Design tokens, shared components, types, API client (read-only, produced by DESIGN phase)
  • Constraint: Each instance writes exclusively within its feature/page directory; no cross-feature file modifications
  • Integration: A final @frontend-engineer[integration] instance wires feature routes into router, updates App shell, and registers global providers

Read the full file on GitHub · 61 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. 1mo ago First seen · 61 lines · 41 tokens per session scan A 887c8950c16a

Subscribe to this mod's changes

frontend-engineer is an agent published in the GitHub repository irahardianto/awesome-agv (156 stars, last pushed 9d ago), licensed MIT. It adds 41 tokens to every session and 620 once invoked, about $0.0002 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

tdd-implementer

Strict quality-first TDD specialist. Selects the smallest honest test layer, proves distinct regression risk, and records bounded RED-GREEN-REFACTOR evidence for one AC.

HoangNguyen0403/agent-skills-standard · 41 tokens

testid-inserter

Inserts stable test ids into production components for each selector gap named by a test plan, following the per-framework insertion policy and never renaming existing ids. Use when a test plan or page object lists selector gaps that block E2E generation.

HoangNguyen0403/agent-skills-standard · 55 tokens

architecture-guard

Audits PR diffs for architecture boundary violations, design simplicity, dependency drift, and established-pattern mismatches. Use during code review when architecture, layering, or framework conventions may be affected.

HoangNguyen0403/agent-skills-standard · 42 tokens

confluence-searcher

Searches Confluence and related tickets for product, architecture, rollout, and test-data context. Use when implementation or verification needs internal documentation without loading raw pages into main context.

HoangNguyen0403/agent-skills-standard · 40 tokens

test-gap-finder

Finds missing, weak, or stale test coverage in a diff. Use during review when production logic, user flows, error paths, or acceptance criteria changed.

HoangNguyen0403/agent-skills-standard · 37 tokens

test-writer

Writes tests for existing code in an isolated git worktree, so a large batch of new test files never collides with work in the main checkout. Use when adding coverage to a module or backfilling tests.

smartwhale8/claude-playbook · 47 tokens