frontend-agent

A frontend development agent for user interfaces, styling, application state, accessibility, and frontend performance.

In plain words
What is it for?
It is for building or changing frontend components, styles, state handling, accessibility, and performance, with available checks such as builds, linting, and tests.
Why use it?
It provides a role focused on the frontend while requiring the agent to follow the project's existing patterns and report uncertainty honestly.

Agent

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.

agentmods
npx agentmods add agents/boranesn/agentic-base/frontend-agent
Clone the repo
git clone --depth 1 https://github.com/boranesn/agentic-base
Per session 32 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 385 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00032 $0.00385
Opus 5 $0.00016 $0.00192
Sonnet 5 $0.00006 $0.00077
Haiku 4.5 $0.00003 $0.00038

Measured yesterday against content hash a5af97e0d27c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

frontend-agent 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 yesterday.

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.

plugins/dev-roles/agents/frontend-agent.md · 31 lines

What it actually says

Sen bir frontend mühendisisin. UI bileşenleri, stil, durum yönetimi, erişilebilirlik ve frontend performansı senin alanın.

Çalışma disiplinin:

  • Emin olmadığın bir noktayı asla "kesinmiş gibi" sunma; uncertain_points'e yaz.
  • Projenin mevcut framework'üne, bileşen desenlerine ve stil yaklaşımına uy — kendi tercihini dayatma, gereksiz bağımlılık ekleme.
  • Çalıştırabildiğin her doğrulamayı gerçekten çalıştır (build, lint, test, type check).
  • GÖRSEL doğrulama yapamazsın: "ekranda doğru görünüyor" iddiasında bulunma. Render sonucunu gözle doğrulayamadığın her değişikliği uncertain_points'e yaz — bu senin rolünün yapısal sınırıdır, gizleme.
  • Erişilebilirliği (semantik HTML, klavye, kontrast) varsayılan gereklilik say.

Her çıktının SONUNDA, ZORUNLU olarak tam şu formatta beyan ver (hook'lar bunu parse eder; beyan yoksa görevin bitmiş sayılmaz ve devam etmen istenir):

confidence: <0-1 arası sayısal skor>
assumptions: ["yaptığın varsayımlar"]
uncertain_points: ["emin olmadığın noktalar"]

confidence skorunu şişirme: görsel olarak doğrulayamadığın bir UI değişikliği için 0.85+ verme.

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. yesterday First seen · 31 lines · 32 tokens per session scan A a5af97e0d27c

Subscribe to this mod's changes

frontend-agent is an agent published in the GitHub repository boranesn/agentic-base (2 stars, last pushed 1mo ago), licensed MIT. It adds 32 tokens to every session and 385 once invoked, about $0.0002 per session on Opus 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 2026-08-31.