Baseline MCP Server
๐ ๐ - MCP server that searches Baseline status using Web Platform API
What is Baseline MCP Server?
Baseline MCP Server is a Model Context Protocol (MCP) server that allows AI assistants like Claude, Cursor, and VS Code to ๐ ๐ - mcp server that searches baseline status using web platform api
๐ ๐ - MCP server that searches Baseline status using Web Platform API
This server falls under the Developer Tools category on MCPgee, the world's largest MCP server directory with 33,000+ servers.
Features
- ๐ ๐ - MCP server that searches Baseline status using Web Pla
Use Cases
Maintainer
Works with
Installation
Manual Installation
npx baseline-mcp-serverConfiguration
Configuration Details
claude_desktop_config.json
Performance
Response Metrics
Resource Usage
How to Set Up and Use Baseline MCP Server
Baseline MCP Server is a Model Context Protocol server that queries the Web Platform Dashboard API to retrieve Baseline compatibility status for web features, telling you whether a CSS property, HTML element, or JavaScript API is widely available, newly available, or still limited across major browsers. It reports browser-specific implementation versions and dates alongside usage statistics, helping frontend developers make informed decisions about which platform features are safe to use in production. Web developers who need quick cross-browser compatibility checks without leaving their AI assistant will find this server immediately useful.
Prerequisites
- Deno runtime installed (https://deno.land) โ the server is designed to run under Deno, not Node.js
- An MCP-compatible client such as Claude Desktop or VS Code with Cline
- Network access to api.webstatus.dev (the Web Platform Dashboard API)
Install Deno
The Baseline MCP Server is published on JSR and runs under Deno. Install the Deno runtime if you don't have it.
curl -fsSL https://deno.land/install.sh | shTest the server manually
Run the server directly to verify it can reach the Web Platform Dashboard API. The --allow-net flag restricts network access to api.webstatus.dev only.
deno run --allow-net=api.webstatus.dev jsr:@yamanoku/baseline-mcp-serverConfigure Claude Desktop
Add the server to claude_desktop_config.json. The command is 'deno' and the args include the permission flag and JSR specifier.
{
"mcpServers": {
"baseline": {
"command": "deno",
"args": [
"run",
"--allow-net=api.webstatus.dev",
"jsr:@yamanoku/baseline-mcp-server"
]
}
}
}Configure VS Code / Cline (alternative)
For VS Code with the Cline extension, add the same configuration under the 'mcp.servers' key in your VS Code settings.json.
{
"mcp": {
"servers": {
"baseline": {
"command": "deno",
"args": [
"run",
"--allow-net=api.webstatus.dev",
"jsr:@yamanoku/baseline-mcp-server"
]
}
}
}
}Restart your MCP client and query Baseline status
After restarting, ask Claude about the Baseline status of any web platform feature. The server returns the compatibility tier, supported browsers, version numbers, and implementation dates.
Baseline MCP Server Examples
Client configuration
Claude Desktop configuration for the Baseline MCP Server using the Deno runtime.
{
"mcpServers": {
"baseline": {
"command": "deno",
"args": [
"run",
"--allow-net=api.webstatus.dev",
"jsr:@yamanoku/baseline-mcp-server"
]
}
}
}Prompts to try
Example prompts for checking web platform Baseline compatibility through Claude.
- "What is the Baseline status of CSS container queries?"
- "Is the View Transitions API widely available or still limited?"
- "Check the Baseline status of the HTML details element."
- "Which browsers support the CSS :has() selector and since which version?"
- "Is Popover API safe to use in production across all major browsers?"Troubleshooting Baseline MCP Server
Deno command not found when Claude Desktop tries to start the server
Install Deno via 'curl -fsSL https://deno.land/install.sh | sh' and ensure ~/.deno/bin is in your PATH. Run 'deno --version' in a new terminal to confirm installation, then restart Claude Desktop.
Permission denied or network error fetching from api.webstatus.dev
The --allow-net flag must include exactly 'api.webstatus.dev'. If your network requires a proxy, set the HTTPS_PROXY environment variable in the env block of your claude_desktop_config.json entry.
Feature returns 'no_data' or an empty result
Not all experimental or very new web features are indexed in the Web Platform Dashboard. Try using the feature's canonical name as it appears in the MDN documentation (e.g. 'css-container-queries' rather than 'container queries').
Frequently Asked Questions about Baseline MCP Server
What is Baseline MCP Server?
Baseline MCP Server is a Model Context Protocol (MCP) server that ๐ ๐ - mcp server that searches baseline status using web platform api It connects AI assistants to external tools and data sources through a standardized interface.
How do I install Baseline MCP Server?
Follow the installation instructions on the Baseline MCP Server GitHub repository. Clone the repo, install dependencies, and add the server config to your AI client.
Which AI clients work with Baseline MCP Server?
Baseline MCP Server works with all major MCP-compatible AI clients including Claude Desktop, Claude Code, Cursor, VS Code (GitHub Copilot), Windsurf, and Cline.
Is Baseline MCP Server free to use?
Yes, Baseline MCP Server is open source and available under the MIT License license. You can use it freely in both personal and commercial projects.
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