A command that opens a plugin’s React interface in a web browser using Vite’s development server. It reloads the page when files change, but it does not provide Figma data or access to Figma’s API.

Use it while building the plugin interface and testing different UI states with mock data. Full Figma operations, selection data, and plugin messaging must be tested in Figma itself.

It lets you check layout, styling, components, and mocked interactions without repeatedly opening the plugin inside Figma.

preview-ui — Command for Claude Code and Cursor by hoshikitsunoda

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/hoshikitsunoda/figma-plugins-vibe-coding-template

Made for: Claude Code, Cursor.

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/commands/hoshikitsunoda/figma-plugins-vibe-coding-template/preview-ui/github.svg)](https://agentmods.dev/commands/hoshikitsunoda/figma-plugins-vibe-coding-template/preview-ui)

Your own site

<a href="https://agentmods.dev/commands/hoshikitsunoda/figma-plugins-vibe-coding-template/preview-ui"><img src="https://agentmods.dev/badge/commands/hoshikitsunoda/figma-plugins-vibe-coding-template/preview-ui/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/commands/hoshikitsunoda/figma-plugins-vibe-coding-template/preview-ui"><img src="https://agentmods.dev/badge/commands/hoshikitsunoda/figma-plugins-vibe-coding-template/preview-ui.svg" alt="Reviewed on agentmods" width="80" 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 306 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	$0.00000	$0.00306
Opus 5.5	$0.00000	$0.00122
Sonnet 5.5	$0.00000	$0.00061
Haiku 4.5	$0.00000	$0.00031

Measured 2mo ago against content hash d911bd8bf525, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

preview-ui 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 2mo 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.

.cursor/commands/preview-ui.md · 42 lines

What it actually says

Starts a browser preview of the plugin UI for faster iteration.

What it does:

Starts Vite dev server (pnpm dev)
Opens the UI in your browser with hot-reload
Lets you iterate on styling and layout without opening Figma

Usage: /preview_ui

What works in preview:

UI layout and styling
Component rendering
React state and interactions
Hot-reload on save

What doesn't work:

figma.* API calls (no Figma context)
Messages to/from plugin (will fail silently)
Selection data (won't populate)
Any Figma operations

Tip: Use mock data in your components to test different states during preview.

Steps

Start the dev server
- Run pnpm dev in background
- Wait for server to start (usually shows "Local: http://localhost:5173")
Tell user how to access it
- Provide the URL (typically http://localhost:5173)
- Explain what will/won't work
- Mention hot-reload: changes appear instantly on save
Explain how to stop
- Tell user: "Press Ctrl+C in the terminal to stop the preview server"
- Or they can close the terminal

Note: The preview shows the UI in isolation. To test full plugin functionality, build with pnpm build and load in Figma.

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.

2mo ago First seen · 42 lines · 0 tokens per session scan A d911bd8bf525

Subscribe to this mod's changes

preview-ui is a command published in the GitHub repository hoshikitsunoda/figma-plugins-vibe-coding-template (21 stars, last pushed 10mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 306 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 2026-08-30.

Frontend

preview-ui next to 6 commands from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
preview-uihoshikitsunoda/figma-plugins-vibe-coding-template	Command	21	10mo ago	MIT	A	0	Claude Code, Cursor
checklistgithub/spec-kit	Command	148k	yesterday	MIT	A	13	Claude Code
clarifygithub/spec-kit	Command	148k	yesterday	MIT	A	27	Claude Code
specifygithub/spec-kit	Command	148k	yesterday	MIT	A	13	Claude Code
analyzegithub/spec-kit	Command	148k	yesterday	MIT	A	26	Claude Code
convergegithub/spec-kit	Command	148k	yesterday	MIT	A	35	Claude Code
implementgithub/spec-kit	Command	148k	yesterday	MIT	A	14	Claude Code