MarkView

Name: MarkView
Author: paulhkang94

by paulhkang94version 1.7.2i★ –iRuns on your computer

Registry nameio.github.paulhkang94/markview

Install

Overview

Description from the maker (original English)

Native macOS markdown preview with MCP server for Claude Code. Swift/SwiftUI, no Electron.

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": {
    "markview": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-server-markview"
      ]
    }
  }
}

Run this in your terminal

claude mcp add markview -- npx -y mcp-server-markview

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "markview": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-server-markview"
      ]
    }
  }
}

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": {
    "markview": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "mcp-server-markview"
      ]
    }
  }
}

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 with the GitHub account paulhkang94, which owns the repo
… 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 32684 servers in this category
Published to the registry more recently than 29% of the other 32684 servers in this category
Basic checks equal to or better than 100% of the other 32684 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 MarkView 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 (1.7.2) reached the registry 2 months 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, Master CSS

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

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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 2 days ago

Install

Master CSS

by master-co

Inspect Master CSS classes, generated CSS, and project stylesheets from your AI client.

Runs on your computerUpdated today

Install

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.

MarkView

&color=green)

Native macOS markdown preview with MCP server for Claude Code. Claude writes markdown — MarkView renders it live, in a real native window, while you work.

Versions: The macOS app (app badge) and the npm MCP wrapper (npm badge) are versioned independently. App releases happen when the Swift binary changes; npm patches happen for MCP server improvements. Both badges always show the latest of each.

Preview only	Editor + Preview

Quick Start — Claude Code

One command to wire MarkView into every Claude Code session:

claude mcp add --transport stdio --scope user markview -- npx mcp-server-markview

That's it. Claude can now call preview_markdown to render any markdown string in a native macOS window, or open_file to open any .md file directly.

Tool	What it does
`preview_markdown`	Render markdown content in a live-reloading MarkView window
`open_file`	Open an existing `.md` file in MarkView

Claude Desktop Setup

Add to ~/Library/Application Support/Claude/claude_desktop_config.json:

"mcpServers": { "markview": { "command": "npx", "args": ["mcp-server-markview"] } } }

Note: MCP servers belong in ~/.claude.json (Claude Code) or claude_desktop_config.json (Claude Desktop), not ~/.claude/settings.json.

Installation

Homebrew (recommended)

# Full .app with Quick Look extension — Apple notarized, Gatekeeper approved

brew install --cask paulhkang94/markview/markview

CLI only (builds from source)

brew tap paulhkang94/markview brew install markview

Build from source

Prerequisites: macOS 14+, Swift 6.0+ (Xcode Command Line Tools)

git clone https://github.com/paulhkang94/markview.git

cd markview swift build -c release

Install as app (Open With support)

bash scripts/bundle.sh --install

Creates MarkView.app in /Applications and registers it with Launch Services for right-click > Open With in Finder. Refuses (unless you pass --force) if a Dock tile is pinned to a build/ or repo-root MarkView.app path, since both are ephemeral dev output.

Install CLI

bash scripts/install-cli.sh

Creates mdpreview and md symlinks in ~/.local/bin/.

Usage

CLI

mdpreview README.md       # Open a file

mdpreview # Open empty editor

Finder

Right-click any .md, .markdown, .mdown, .mkd file > Open With > MarkView

Programmatic

open -a MarkView README.md

Features

GitHub Flavored Markdown via swift-cmark (tables, strikethrough, autolinks, task lists, footnotes)
Mermaid diagrams — flowcharts, sequence, Gantt, ER, and pie charts
Syntax highlighting via Prism.js (18 languages)
Quick Look integration — spacebar-preview .md files in Finder without opening the app
Markdown linting with 9 built-in rules and status bar diagnostics
Live split-pane editor with WKWebView rendering and bidirectional scroll sync
File watching with DispatchSource — works with VS Code, Vim, and other editors
Local image rendering — inlines relative paths like correctly
Export to HTML and PDF
HTML sanitizer — strips scripts, event handlers, and XSS vectors
Drag and drop — drop any .md file onto the window to open
Find & Replace — Cmd+F / Cmd+Option+F
Format on save — auto-applies lint fixes
Auto-save, word count, line numbers, scroll position preservation
Dark mode — system/light/dark theme options, 18 configurable settings

Architecture

Sources/MarkViewCore/           # Library (no UI, fully testable)

MarkdownRenderer.swift # cmark-gfm C API wrapper FileWatcher.swift # DispatchSource file monitoring MarkdownLinter.swift # 9-rule pure Swift linting engine HTMLSanitizer.swift # XSS prevention LanguagePlugin.swift # Plugin protocol + registry Plugins/ # CSV, HTML, Markdown plugins

Sources/MarkView/ # SwiftUI app (macOS 14+) ContentView.swift # Split-pane editor + preview WebPreviewView.swift # WKWebView with Prism.js ExportManager.swift # HTML/PDF export

Sources/MarkViewMCPServer/ # MCP server for AI tool integration main.swift # stdio JSON-RPC (preview_markdown, open_file)

Tests/TestRunner/ # 403 standalone tests (no XCTest) Tests/VisualTester/ # 5 visual regression tests + WCAG contrast Tests/FuzzTester/ # 10K random input crash testing Tests/DiffTester/ # Differential testing vs cmark-gfm CLI

See docs/ARCHITECTURE.md for full details.

Testing

swift run MarkViewTestRunner    # 403 tests

python3 scripts/verify.py # Full verification (build + tests, writes stamp) python3 scripts/verify.py --extended # + fuzz + differential bash scripts/test-mcp.sh # MCP protocol tests

Development

swift build

swift run MarkView swift run MarkView /path/to/file.md

Support

GitHub Sponsors
Star this repo to help others find it

License

MIT — see LICENSE.

MarkView

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

Master CSS

README from the maker

MarkView

Quick Start — Claude Code

Claude Desktop Setup

Installation

Homebrew (recommended)

CLI only (builds from source)

Build from source

Install as app (Open With support)

Install CLI

Usage

CLI

Finder

Programmatic

Features

Architecture

Testing

Development

Support

License