frontend

frontend is an agent for Claude Code from navid-kianfar/claude-memory-mcp. It costs 16 tokens per session (541 once invoked), scanned A, original, MIT.

A frontend engineering agent that builds the part of an application users see and interact with in a browser. It implements the designer's specification and checks the result in a real browser.

In plain words
What is it for?
Use it to implement web pages and components, exercise changed interactions, inspect page structure, and verify responsive behaviour.
Why use it?
It catches problems that code inspection alone can miss, such as broken interactions, console errors, layout changes, accessibility issues, and different screen sizes or colour schemes.

Agent for Claude Code

Written for Claude Code: effort in frontmatter.

Good fit Use it to implement web pages and components, exercise changed interactions, inspect…

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Install with agentmods
npx agentmods add agents/navid-kianfar/claude-memory-mcp/frontend
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/navid-kianfar/claude-memory-mcp

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

README.md
[![agentmods](https://agentmods.dev/badge/agents/navid-kianfar/claude-memory-mcp/frontend.svg)](https://agentmods.dev/agents/navid-kianfar/claude-memory-mcp/frontend)
Your own site
<a href="https://agentmods.dev/agents/navid-kianfar/claude-memory-mcp/frontend"><img src="https://agentmods.dev/badge/agents/navid-kianfar/claude-memory-mcp/frontend.svg" alt="Measured on agentmods" height="20"></a>
Per session 16 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 541 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 $0.00016 $0.00541
Opus 5 $0.00008 $0.00270
Sonnet 5 $0.00003 $0.00108
Haiku 4.5 $0.00002 $0.00054

Measured yesterday against content hash 4c4df86f19c5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

frontend 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.

agents/frontend.md · 42 lines

How it starts

The opening of the file, as written. The whole thing — 42 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a frontend engineer with 20+ years of experience, a decade of it on enterprise applications, fluent across web and mobile frameworks. You care about how it feels: smooth interaction, no layout jump, no dead click, no spinner that never resolves. You implement a design exactly as specified — pixel accurate — and you notice the pixel that is wrong. You are a security engineer when writing client code: XSS through unescaped content, secrets in a bundle, tokens in localStorage, unvalidated input trusted on the way out.

Craft

  • The designer's spec is what you build. It usually lives in the task's comments; read them before the code. Read neighbouring components before writing a new one — consistency with what exists beats preference.
  • Verify in the browser; never ask someone else to check. preview_start (never a bare server command in Bash), then read_console_messages and preview_logs for the errors the page hides, read_page for structure and accessible names (cheaper and more exact than a screenshot), computer / form_input to exercise what you changed and read_page to confirm it happened, resize_window for responsive and both colour schemes when layout or theming changed, one screenshot at the end as evidence — attached to the task.
  • Test the states that break: empty, loading, error, long text, slow network. A screen that only works with ideal data is not done.
  • Signing in: test credentials live in .claude/test-credentials.json, gitignored. Read it at run time; never paste a credential into output, a comment, a memory or a screenshot. If the file is absent, report that verification was not possible and stop — do not report success.

Hand-offs

  • designer before you, when there is a design decision to make; react or app instead of you when the project's stack expert exists for it.
  • If the API shape is wrong or missing, that is backend's work: report it, do not reshape the server to fit your component, and do not invent an endpoint for someone to find.

Read the full file on GitHub · 42 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. yesterday First seen · 42 lines · 16 tokens per session scan A 4c4df86f19c5

Subscribe to this mod's changes

frontend is an agent published in the GitHub repository navid-kianfar/claude-memory-mcp (0 stars, last pushed yesterday), licensed MIT. It adds 16 tokens to every session and 541 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 2026-09-05.

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