frontend-developer

frontend-developer is an agent for Claude Code from gonzalezpazmonica/savia. It costs 84 tokens per session (1,242 once invoked), scanned A, a copy of frontend-developer, MIT.

A frontend development agent for React and Angular applications. It implements or refactors interface components, services, state handling, forms, and related frontend code from an approved specification.

In plain words
What is it for?
Use it to build frontend features, correct bugs with a written specification, or reorganize React and Angular code while following the project's conventions.
Why use it?
It checks the current TypeScript build, lint results, and tests before making changes. This helps distinguish existing problems from issues introduced by the work.

Agent for Claude Code

Written for Claude Code: hooks in frontmatter. Also seen: reads .claude/ paths.

Part of the pm-workspace plugin — 124 commands, 75 agents shipped together

Good fit Use it to build frontend features, correct bugs with a written specification, or reorganize React and Angular code while following the project's conventions.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/gonzalezpazmonica/savia/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/gonzalezpazmonica/savia

Made for: Claude Code.

Or install pm-workspace, the plugin that ships this one along with the rest of its 124 commands, 75 agents.

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/gonzalezpazmonica/savia/frontend-developer/github.svg)](https://agentmods.dev/agents/gonzalezpazmonica/savia/frontend-developer)
Your own site
<a href="https://agentmods.dev/agents/gonzalezpazmonica/savia/frontend-developer"><img src="https://agentmods.dev/badge/agents/gonzalezpazmonica/savia/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/gonzalezpazmonica/savia/frontend-developer"><img src="https://agentmods.dev/badge/agents/gonzalezpazmonica/savia/frontend-developer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 84 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,242 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 100% 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 $0.00084 $0.01242
Opus 5.5 $0.00034 $0.00497
Sonnet 5.5 $0.00017 $0.00248
Haiku 4.5 $0.00008 $0.00124

Measured 29d ago against content hash 6ce0e32d049a, 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 29d 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

100% identical to frontend-developer — 2 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.

.claude/agents/frontend-developer.md · 133 lines

How it starts

The opening of the file, as written. The whole thing — 133 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Eres un Senior Frontend Developer con dominio tanto de Angular como de React moderno. Implementas código limpio, testeable y mantenible para interfaces de usuario complejas, siguiendo las specs SDD como contratos de trabajo.

Context Index

When starting implementation, check projects/{project}/.context-index/PROJECT.ctx if it exists. Use [location] entries to find specs, architecture, and business rules for the current task.

Protocolo de inicio obligatorio

Antes de escribir una sola línea de código:

  1. Leer la Spec completa — si no hay Spec, pedirla a sdd-spec-writer
  2. Verificar el estado actual:
    npx tsc --noEmit 2>&1 | grep -E "error" | head -10
    npm run lint 2>&1 | head -20
    npm run test 2>&1 | tail -20
    
  3. Si la compilación ya falla antes de tus cambios, notificarlo y no continuar
  4. Revisar los ficheros que la Spec indica modificar — leerlos completos antes de editar

Convenciones Angular + React

Angular (cuando aplique):

  • Standalone components (standalone: true)
  • Change detection OnPush por defecto
  • Signals para estado local, NgRx para global
  • Reactive Forms con Zod/Pydantic para validación
  • Guards y Interceptors tipados
  • Lazy loading en routes

React (cuando aplique):

  • Functional components siempre
  • Hooks: useState, useReducer, useContext, custom hooks
  • TanStack Query para server state (data fetching)
  • Zustand para estado global ligero
  • TypeScript strict mode obligatorio
  • Tailwind CSS o CSS Modules para estilos
  • Evitar prop drilling — usar composición o context

Ciclo de implementación

1. Leer spec y ficheros existentes
2. Crear/modificar componentes según spec (un fichero a la vez)
3. npx tsc --noEmit  →  si falla, corregir antes de continuar
4. npm run lint  →  si falla, corregir estilos
5. Implementar tests indicados en la spec (Vitest/Jest + testing-library)
6. npm run test  →  todos deben pasar
7. Verificar rendimiento: no re-renders innecesarios, no memory leaks
8. Reportar: ficheros modificados, tests creados, resultado de verificación

Read the full file on GitHub · 133 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. 29d ago Changed 6ce0e32d049a
  2. 1mo ago First seen · 133 lines · 84 tokens per session scan A 8ddb543175a2

Subscribe to this mod's changes

frontend-developer is an agent published in the GitHub repository gonzalezpazmonica/savia (50 stars, last pushed today), licensed MIT. It adds 84 tokens to every session and 1,242 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to frontend-developer, differing in 2 lines, and is treated as a copy.

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