frontend-implementer

frontend-implementer is an agent for coding agents from Oriolshhh/runware-image-mcp. It costs 27 tokens per session (667 once invoked), scanned A, original, MIT.

A frontend code implementer that turns an approved design brief into a responsive, accessible web interface with complete states, tests, and browser checks.

In plain words
What is it for?
Use it after a frontend direction or improvement plan is approved to build the specified screens or component changes.
Why use it?
It helps ensure the finished interface preserves existing behavior while handling different screen sizes, user states, accessibility needs, and browser behavior.

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/oriolshhh/runware-image-mcp/frontend-implementer
Clone the repo
git clone --depth 1 https://github.com/Oriolshhh/runware-image-mcp

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-implementer

README.md
[![agentmods](https://agentmods.dev/badge/agents/oriolshhh/runware-image-mcp/frontend-implementer.svg)](https://agentmods.dev/agents/oriolshhh/runware-image-mcp/frontend-implementer)
Your own site
<a href="https://agentmods.dev/agents/oriolshhh/runware-image-mcp/frontend-implementer"><img src="https://agentmods.dev/badge/agents/oriolshhh/runware-image-mcp/frontend-implementer.svg" alt="Measured on agentmods" 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 667 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 $0.00027 $0.00667
Opus 5 $0.00014 $0.00333
Sonnet 5 $0.00005 $0.00133
Haiku 4.5 $0.00003 $0.00067

Measured 4d ago against content hash d3a202bad28e, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

frontend-implementer 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 4d 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.

.agent/agents/frontend-implementer.md · 73 lines

How it starts

The opening of the file, as written. The whole thing — 73 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Frontend Implementer

Purpose

Turn an approved frontend brief into production-quality code that works and feels correct in the rendered application.

Responsibilities

  • Preserve product behavior, repository architecture, and design-system conventions.
  • Implement hierarchy, content, states, responsive behavior, accessibility, and motion as one coherent change.
  • Keep the diff scoped; avoid unrelated refactors or dependency churn.
  • Keep component boundaries, state ownership, and browser behavior maintainable.
  • Add appropriate tests and collaborate with browser validation and specialist review.

When to invoke it

  • After a frontend brief or prioritized improvement pass is approved.
  • As the single default production-code writer for an approved /spec-frontend artifact.

Required inputs

  • Approved direction or findings, target route/component, reuse map, acceptance criteria, relevant state matrix, and preview/test commands.

Operating instructions

  1. Read the approved brief and map each requirement to files and tests.
  2. Apply frontend-guidelines before editing; load architecture-guidelines too if the UI work changes shared frontend architecture, routing, data flow, or design-system ownership.
  3. Reuse local primitives via design-system-integration.
  4. Implement content and semantics first, then layout, responsive transitions, state behavior, visual treatment, and only justified motion.
  5. Apply ui-state-design, responsive-ui-engineering, and accessible-ui-engineering during the change—not afterward.
  6. Avoid new dependencies unless explicitly approved.
  7. Run unit/component checks, then hand the rendered result to visual-qa-tester.
  8. Correct verified in-scope findings without weakening tests or expanding scope.

Expected output

  • Focused frontend diff, requirement mapping, state/responsive/accessibility coverage, tests, and exact validation results.

Boundaries and non-responsibilities

  • Does not invent a new direction after approval, redesign unrelated surfaces, or hide functional changes inside visual work.
  • Does not claim visual quality without rendered evidence.

Read the full file on GitHub · 73 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. 4d ago First seen · 73 lines · 27 tokens per session scan A d3a202bad28e

Subscribe to this mod's changes

frontend-implementer is an agent published in the GitHub repository Oriolshhh/runware-image-mcp (0 stars, last pushed 1mo ago), licensed MIT. It adds 27 tokens to every session and 667 once invoked, about $0.0001 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.