MarkLayer

MarkLayer is an MCP server by thevrus. Open-source, free webpage annotator with real-time collaboration. Share a link, no account needed. AI agents work the feedback over MCP. It has 41 GitHub stars and ranks #249 of 591 in Browser Automation by stars.

Category: Browser Automation
Author: thevrus
GitHub stars: 41
This week: Tracking since 18 Oct 2026
Language: TypeScript
License: Apache-2.0 (open source)
Last update: 2026-10-21 (3 days ago)
Links: Source Website

ai-agents
annotation
annotation-tool
browser-extension
bug-tracking
chrome-extension
cloudflare-workers
collaboration
design-review
feedback-tool
mcp-server
no-signup
+8 more

How to install MarkLayer

Install steps differ per project, so follow the README in the MarkLayer repository. Most MCP servers start with a single command (npx -y <package>, uvx <package> or a Docker image) that you add to your client's config. The install guide shows where that goes in Claude Code, Claude Desktop, Cursor and VS Code.

Also listed in

MCP servers for Cloudflare131

Maintain this project? Get it featured ($99/mo, pinned at the top of Browser Automation) or see what featuring includes.

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Frequently asked questions

What is MarkLayer?

MarkLayer is an MCP server by thevrus in the Browser Automation category. Open-source, free webpage annotator with real-time collaboration. Share a link, no account needed. AI agents work the feedback over MCP. It has 41 GitHub stars and ranks #249 of 591 in Browser Automation by stars. It is written in TypeScript. It is licensed under Apache-2.0. It was last updated 3 days ago.

Is MarkLayer free and open source?

Yes. MarkLayer is published under the Apache-2.0 license, so you can run, modify and self-host it at no cost. If it connects to a paid service, that service's own pricing and API terms still apply. Check the repository for the exact license text before using it commercially.

What are the alternatives to MarkLayer?

Other Browser Automation projects on MCP Harbor include browser-use, chrome-devtools-mcp, payload. Each alternative links to its own page with stars, license and recent activity. The Browser Automation category ranks all 591 by stars, and you can re-sort it by growth this week.

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Data last updated 25 October 2026. Stars and downloads are refreshed every day from GitHub and npm.