frontend-developer

frontend-developer is an agent for Claude Code from ananddtyagi/cc-marketplace. It costs 0 tokens per session (1,116 once invoked), scanned A, original, no licence file.

An agent for building web user interfaces, including components made with React, Vue, or Angular.

In plain words
What is it for?
Use it to build interface components, manage application state, and improve front-end performance.
Why use it?
It helps with the front-end work of creating responsive, accessible, and efficient web applications.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the frontend-developer plugin — 1 agent shipped together

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/ananddtyagi/cc-marketplace/frontend-developer
Clone the repo
git clone --depth 1 https://github.com/ananddtyagi/cc-marketplace

Made for: Claude Code.

Or install frontend-developer, the plugin that ships this one along with the rest of its 1 agent.

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/ananddtyagi/cc-marketplace/frontend-developer.svg)](https://agentmods.dev/agents/ananddtyagi/cc-marketplace/frontend-developer)
Your own site
<a href="https://agentmods.dev/agents/ananddtyagi/cc-marketplace/frontend-developer"><img src="https://agentmods.dev/badge/agents/ananddtyagi/cc-marketplace/frontend-developer.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,116 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00000 $0.01116
Opus 5 $0.00000 $0.00558
Sonnet 5 $0.00000 $0.00223
Haiku 4.5 $0.00000 $0.00112

Measured 2d ago against content hash 4bd91a7f24aa, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, 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 2d 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.

plugins/frontend-developer/agents/frontend-developer.md · 90 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 2d ago First seen · 90 lines · 0 tokens per session scan A 4bd91a7f24aa

Subscribe to this mod's changes

frontend-developer is an agent published in the GitHub repository ananddtyagi/cc-marketplace (687 stars, last pushed 7mo ago), with no licence file. It costs nothing until one of its globs matches a file; then it loads 1,116 tokens. 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 2026-09-03.

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