What is mcp-server?
mcp-server is a MCP server by Yocoolab that pin visual feedback on live web pages with the Yocoolab extension and hand it to coding agents with the element, selector and screenshot attached. It is listed under Developer tools and has 2 GitHub stars.
| Type | Mcp server |
|---|---|
| Author | Yocoolab |
| Repository | Yocoolab/mcp-server |
| Popularity | 2 GitHub stars |
| Category | Developer tools |
| Security | Low risk (88/100) |
| Rank | #2,844 of 4,418 MCP servers; #610 in Developer tools |
| License | Apache-2.0 |
| Last commit | 2026-10-03 |
| Runs | Locally and in the cloud |
| Language | TypeScript |
| Platforms | macOS, Windows, Linux |
Is mcp-server safe to install?
mcp-server scores 88/100 on the MCPMods security check: Low risk. Things to review: sends your data to a cloud service. It passed 5 of 6 checks.
MCP server results come from listing signals: who publishes it, where your data goes and what it can do. The code itself is not scanned yet.
| Check | Result |
|---|---|
| Published by the service itself | Pass |
| Sends your data to a cloud service | Review |
| No credentials mentioned | Pass |
| Read-only by description | Pass |
| No code execution | Pass |
| Source on GitHub | Pass |
How do I install mcp-server?
- Find the launch command. The README says how the server starts (npx, uvx, docker or a remote URL) and which API keys it needs.
https://github.com/Yocoolab/mcp-server
- Add it to Claude Code. Replace the part after -- with the command from the README. Remote servers use --transport http with a URL.
claude mcp add mcp-server -- <command from README> claude mcp add --transport http mcp-server <server-url>
- Check it connected. This lists your MCP servers and their status.
claude mcp list
Or ask Claude to set it up
Paste this into Claude Code and it installs mcp-server for you:
Add the "mcp-server" MCP server from https://github.com/Yocoolab/mcp-server to Claude Code. Read its README for the launch command and any API keys I need, run claude mcp add, then check that it connects.