HTML Cloud

Name: HTML Cloud
Author: viljamilaurila

by viljamilaurilaversion 0.6.0i★ –iRuns on your computer

Registry namecloud.html/html-cloud

Install

Overview

Description from the maker (original English)

Share AI-generated HTML as a private, end-to-end encrypted link. Update it later at the same link.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Other

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
The registry lists no key to fill in.

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "html-cloud": {
      "command": "npx",
      "args": [
        "-y",
        "html-cloud-mcp"
      ]
    }
  }
}

Run this in your terminal

claude mcp add html-cloud -- npx -y html-cloud-mcp

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "html-cloud": {
      "command": "npx",
      "args": [
        "-y",
        "html-cloud-mcp"
      ]
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "html-cloud": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "html-cloud-mcp"
      ]
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified against the domain html.cloud (the registry checks domain ownership)
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Otheri

More stars than 0% of the other 32572 servers in this category
Published to the registry more recently than 77% of the other 32572 servers in this category
Basic checks equal to or better than 100% of the other 32572 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is HTML Cloud safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.6.0) reached the registry 10 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, AvaHR

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Spec Driven Development

by formulahendry

MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.

Runs on your computer★ 440MITUpdated 14 months ago

Install

Remote Desktop Commander

by desktop-commander

Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.

Runs in the cloud★ 211Updated yesterday

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AvaHR

by avahr.com

Read hiring data and create inactive assessment and questionnaire drafts for human review.

Runs in the cloudUpdated today

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

html-cloud-mcp

An MCP server that lets Claude and other AI assistants share the HTML they generate as a private, end-to-end encrypted link — no account, no public URL.

The assistant calls one tool, share_html, to share — and update_html to change a page it already shared, at the same link. The HTML is encrypted locally with AES-256-GCM before anything is uploaded; html.cloud stores only ciphertext and cannot read it.

"Make me a one-page summary of this and share it privately."

→ the assistant generates the HTML, calls share_html, and replies with a link.

"Actually, add a section on next steps."

→ the assistant revises the HTML, calls update_html with the edit link, and

the link you already sent shows the new version.

Install

Claude Desktop (one-click)

Download the packaged extension (a .mcpb file) from html.cloud/mcp and double-click it. If Claude Desktop doesn't offer to install it, open *Settings → Extensions*, click *Advanced settings*, and use *Install Extension…* under *Extension Developer* to pick the file — dragging the file into the window is unreliable and may just attach it to the chat.

About the install warning: Claude Desktop shows the same red "access to

everything on your computer" box for every extension installed from a file

rather than from its built-in directory. It is a statement about how

extensions run, not about this one. The server is the ~500 lines in bin/

and lib/ of this directory, with no third-party dependencies (it speaks

MCP's stdio JSON-RPC itself, in lib/stdio-server.js); it talks to a single host (html.cloud), and it

uploads only ciphertext. Extensions installed from Claude's directory don't

show the warning; getting listed there is in progress.

Cowork: the extension also works in Cowork sessions that are linked to

the computer it is installed on — the desktop app proxies it into the

session. A Cowork session running purely in the cloud, with no linked

computer, will not see it.

Other MCP clients

Add it to your MCP client. For Claude Desktop, in claude_desktop_config.json:

"mcpServers": { "html-cloud": { "command": "npx", "args": ["-y", "html-cloud-mcp"] } } }

For Claude Code:

claude mcp add html-cloud -- npx -y html-cloud-mcp

Requires Node.js 20+.

The tools

`share_html`

Argument	Type	Description
`html`	string	The full, self-contained HTML document to share.
`path`	string	Path of a local `.html` file to share instead of passing `html` inline.
`expires`	`7` \	`30` \	`never`	Days until the link expires. Default `30`.
`link_name`	string	Optional readable name added to the share link, e.g. `"Q3 sales report"` gives `/v/{id}/q3-sales-report`. Not encrypted — visible in the link and to the server. Max 80 characters.

Pass exactly one of html or path. path is for large pages: MCP hosts cap the size of a tool argument, so a long report that the assistant has written to disk is shared from the file rather than squeezed through the call. Only .html/.htm files are accepted — the server shares web pages, not arbitrary files from your computer.

Returns a share link (give it to anyone you want to read the file) and a private edit link (update the file, change the expiry, or delete it).

`update_html`

Argument	Type	Description
`edit_link`	string (required)	The private edit link `share_html` returned.
`html`	string	The complete HTML document that replaces the current one.
`path`	string	Path of a local `.html` file whose content replaces the current page.
`link_name`	string	The `link_name` given to `share_html` for this page, if any, so the returned share link matches the one already handed out.

As with share_html, pass exactly one of html or path.

Replaces the content behind an existing share. The share link stays the same and the expiry is untouched, so anyone who already has the link sees the new version. The edit key unwraps the document's existing view key locally, the new HTML is encrypted under that same key, and only ciphertext is sent — the server never sees the content, before or after.

Example prompts

"Make a one-page summary of this report as HTML and share it privately."
"Turn these notes into a slide-style page and give me a link that expires in 7 days."
"Add a next-steps section to the page you shared earlier." (the same link shows the new version)

How the encryption works

Keys are generated inside this server process and never sent anywhere except inside the links it returns.
The HTML is encrypted with AES-256-GCM before any network request. Only ciphertext is uploaded.
The decryption key sits after the # in the share link — that part of a URL is never transmitted to a server.

This is the same zero-knowledge model as the html.cloud website and CLI, using the same crypto module (imported from the html-cloud package — never reimplemented). Full explainer: html.cloud/security.

Configuration

Env var	Description	Default
`HTML_CLOUD_PREFER`	When Claude should pick html.cloud over its built-in artifact publishing. `sensitive`: for confidential content and anything going outside your organisation; built-in artifacts stay fine for casual pages. `always`: for every share.	`sensitive`
`HTML_CLOUD_URL`	Server base URL (for self-hosted instances)	`https://html.cloud`

The Claude Desktop extension asks this as a switch, *Always share through html.cloud*, when you install it. For npx setups, set the env var in the client config:

"mcpServers": { "html-cloud": { "command": "npx", "args": ["-y", "html-cloud-mcp"], "env": { "HTML_CLOUD_PREFER": "always" } } } }

For Claude Code: claude mcp add html-cloud -e HTML_CLOUD_PREFER=always -- npx -y html-cloud-mcp.

Privacy Policy

Full policy: html.cloud/mcp-privacy.

Collection. The server handles only the HTML the assistant passes to share_html or update_html — inline, or as the one .html file whose path the assistant passes. It reads nothing else from your computer and nothing from the conversation beyond the tool arguments.
Use and storage. The HTML is encrypted locally with AES-256-GCM. What is sent to html.cloud: the ciphertext, the chosen expiry, a copy of the page key encrypted with the edit key, and a hash of the edit key that authorises later updates (updates send the page id, the new ciphertext, and that proof). None of it lets the server read the page. Keys exist only in the links returned to you.
Sharing. No third parties. The server talks to exactly one host, html.cloud, and only when you share or update a page. Each request says it comes from the MCP server, so html.cloud can keep daily totals; nothing per page or per person. No analytics, no telemetry, no account.
Retention. A page is unavailable from the moment its link expires (7 or 30 days, or never if you chose that) and its ciphertext is permanently deleted by a daily clean-up; deleting via the edit link removes it at once.
Contact. Email viljami@liito.io or open an issue at github.com/viljamilaurila/html-cloud.

Honest threat model

Anyone with the share link can read the file — the link is the credential. The server can expire or delete ciphertext but can never read it. See html.cloud/security for details and limitations.

Source: github.com/viljamilaurila/html-cloud · MIT

HTML Cloud

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

AvaHR

README from the maker

html-cloud-mcp

Install

Claude Desktop (one-click)

Other MCP clients

The tools

share_html

update_html

Example prompts

How the encryption works

Configuration

Privacy Policy

Honest threat model

`share_html`

`update_html`