A local macOS preview application for Markdown documents, built with Swift and SwiftUI rather than Electron. It connects to Claude Code through an MCP server.

Use it to preview Markdown files during development and let Claude Code work with the local preview server.

It lets you view Markdown natively on macOS while keeping the preview service local. The MCP connection makes the preview available to a coding agent.

markview — MCP server by paulhkang94

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/paulhkang94/markview

Made for: Claude Code, Codex, Cursor, Gemini CLI, OpenCode.

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/mcp/paulhkang94/markview/markview/github.svg)](https://agentmods.dev/mcp/paulhkang94/markview/markview)

Your own site

<a href="https://agentmods.dev/mcp/paulhkang94/markview/markview"><img src="https://agentmods.dev/badge/mcp/paulhkang94/markview/markview/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/mcp/paulhkang94/markview/markview"><img src="https://agentmods.dev/badge/mcp/paulhkang94/markview/markview.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

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.

Security

Grade A, and why

markview 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 1mo 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.

npm/server.json · 10 lines

What it actually says

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

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.

1mo ago First seen · 10 lines scan A 3125a37b2e95

Subscribe to this mod's changes

markview is an MCP server published in the GitHub repository paulhkang94/markview (38 stars, last pushed 1mo ago), licensed MIT. Its token cost is not measured: an MCP server costs its tool schemas, not its config file. 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.

Documents gfm macos markdown markdown-preview native-app swift

markview

Getting it into your agent

Wrote this? Show the measurements

Grade A, and why

Nothing flagged

What it actually says

What this file has done since we first saw it

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