What is rebuild-ui-bundle?

A build procedure for turning a React user interface into the single HTML file served by an MCP server.

Rebuilding the bundled interface, refreshing documentation screenshots, and ensuring local changes are included in the generated file.

The server can otherwise show an old interface or a placeholder even when the source code has changed. It also checks the interface for type errors before building.

How UmutKDev/myanimelist-mcp configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to UmutKDev/myanimelist-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/UmutKDev/myanimelist-mcp/main/.claude/skills/rebuild-ui-bundle/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/UmutKDev/myanimelist-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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/umutkdev/myanimelist-mcp/rebuild-ui-bundle/github.svg)](https://agentmods.dev/skills/umutkdev/myanimelist-mcp/rebuild-ui-bundle)

Your own site

<a href="https://agentmods.dev/skills/umutkdev/myanimelist-mcp/rebuild-ui-bundle"><img src="https://agentmods.dev/badge/skills/umutkdev/myanimelist-mcp/rebuild-ui-bundle/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/umutkdev/myanimelist-mcp/rebuild-ui-bundle"><img src="https://agentmods.dev/badge/skills/umutkdev/myanimelist-mcp/rebuild-ui-bundle.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 28 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 442 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.

Model	Per session	Once invoked
Fable 5.1	$0.00028	$0.00442
Opus 5	$0.00014	$0.00221
Sonnet 5	$0.00006	$0.00088
Haiku 4.5	$0.00003	$0.00044

Measured 8d ago against content hash 9686ab605b05, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

rebuild-ui-bundle 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 8d 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.

.claude/skills/rebuild-ui-bundle/SKILL.md · 33 lines

What it actually says

Rebuild the UI bundle

The React app in ui/ builds to a single-file bundle at src/mal_mcp/ui/dist/index.html, which the server serves as the ui://mal-mcp/app.html MCP Apps resource. The dist/ dir is gitignored but ships in the wheel via [tool.hatch.build] artifacts — so a stale/missing build only shows the placeholder page ("UI bundle not built…"), it does not fail the server or pytest.

Released wheels do not use your local build. .github/workflows/publish.yml builds the bundle from scratch on every tag and hard-fails if it is missing or is the placeholder. Rebuild locally to see your changes; CI is what makes them ship. (CI pins Node 22; a newer local Node is fine.)

Steps

cd ui
npm ci (first time, or after package.json/lockfile changes)
npm run typecheck — catch TS errors before building
npm run build — emits src/mal_mcp/ui/dist/index.html

Notes

The server caches the built HTML per process (_dist_html() in ui/__init__.py). Since the MCP client owns the server process, restart the client (or its MCP connection) to pick up a rebuild. A miss is not cached, so building while the process runs takes effect on the next read.
Preview the app with the mal-ui-dev launch config (.claude/launch.json, Vite on port 5199, driven by fixtures in ui/src/dev/fixtures.ts).
Screenshots: to refresh docs/screenshots/*.png, run the dev server and re-capture the views (dashboard, list, search, ranking, schedule, detail) from the fixtures.

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.

8d ago First seen · 33 lines · 28 tokens per session scan A 9686ab605b05

Subscribe to this mod's changes

rebuild-ui-bundle is a skill published in the GitHub repository UmutKDev/myanimelist-mcp (1 stars, last pushed 1mo ago), licensed MIT. It adds 28 tokens to every session and 442 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.

Frontend React

react-patterns

React 18/19 patterns including hooks discipline, server/client component boundaries, Suspense + error boundaries, form actions, data fetching, state management decision trees, and accessibility-first composition. Use when writing or reviewing React components.

affaan-m/ECC · 49 tokens

chakra-ui-builder

Build responsive, accessible UI components and layouts using Chakra UI v3, install or configure Chakra UI in new and existing projects, and design scalable themes using tokens, semantic tokens, recipes, and slot recipes. Use this skill whenever a user asks to build, create, or generate any UI component, page, form…

chakra-ui/chakra-ui · 214 tokens

material-ui-tailwind

Integrates Material UI with Tailwind CSS v4 using cascade layers (enableCssLayer, @layer order) and documents Tailwind v3 interoperability (preflight, important, injectFirst, portals). Use when combining MUI with Tailwind utilities, slotProps className, or theme token bridges.

mui/material-ui · 67 tokens

r3f-best-practices

React Three Fiber (R3F) and Poimandres ecosystem best practices. Use when writing, reviewing, or optimizing R3F code. Triggers on tasks involving @react-three/fiber, @react-three/drei, zustand, @react-three/postprocessing, @react-three/rapier, or leva.

zebbern/claude-code-guide · 74 tokens

dashboard-widgets

Author a dashboard widget — a small React component backed by named LangWatchQL queries — from a plain question. Discovers the analytics schema, writes the queries, writes the widget file, saves it, then proves it renders. Use when asked to build, prototype, or iterate on a custom chart widget, or to add a widget…

langwatch/langwatch · 79 tokens

assistant-ui-primitives

Guide for assistant-ui UI primitives - ThreadPrimitive, ComposerPrimitive, MessagePrimitive. Use when customizing chat UI components.

compozy/compozy · 28 tokens

myanimelist-mcp: Skill for Claude Code