Koskamo

browser-compat-mcp-server

An MCP server providing offline browser compatibility and Baseline status checks for web features using bundled MDN data. It supports STDIO and Streamable HTTP transports, offering tools to list references, get feature details, check baseline status, search features, and compare support against browserslist targets without requiring network calls or API keys.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

browser-compat-mcp-server logo, by cyanheadsCommunity listingLocal stdioSource reviewed; not executedPublished by cyanheads
Vendor documentation

What you can do with it

  • Check Baseline status for web features
  • Compare feature support against browserslist targets
  • Search for features by keyword or code notation
  • Get full compatibility records with MDN links

Source and maintenance

Community listingRegistry 0.3.0
mcp-registry: io.github.cyanheads/browser-compat-mcp-server@0.3.0Source repository
Maintenance checked

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

@cyanheads/browser-compat-mcp-server 0.3.0

npmnpx
@cyanheads/browser-compat-mcp-server package definition
{
  "version": "0.3.0",
  "transport": "stdio",
  "identifier": "@cyanheads/browser-compat-mcp-server",
  "runtimeHint": "npx",
  "registryType": "npm",
  "registryBaseUrl": "https://registry.npmjs.org",
  "environmentVariables": [
    {
      "name": "MCP_LOG_LEVEL",
      "format": "string",
      "default": "info",
      "description": "Sets the minimum log level for output (e.g., 'debug', 'info', 'warn')."
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.
Cursor configuration
{
  "mcpServers": {
    "browser-compat-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/browser-compat-mcp-server@0.3.0"
      ],
      "env": {
        "MCP_LOG_LEVEL": "<YOUR_MCP_LOG_LEVEL>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.
Cline configuration
{
  "mcpServers": {
    "browser-compat-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/browser-compat-mcp-server@0.3.0"
      ],
      "env": {
        "MCP_LOG_LEVEL": "<YOUR_MCP_LOG_LEVEL>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.
VS Code configuration
{
  "servers": {
    "browser-compat-mcp-server": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/browser-compat-mcp-server@0.3.0"
      ],
      "env": {
        "MCP_LOG_LEVEL": "<YOUR_MCP_LOG_LEVEL>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.
Claude Desktop configuration
{
  "mcpServers": {
    "browser-compat-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/browser-compat-mcp-server@0.3.0"
      ],
      "env": {
        "MCP_LOG_LEVEL": "<YOUR_MCP_LOG_LEVEL>"
      }
    }
  }
}

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