Firecrawl MCP in Cursor gives "Client Closed" error

Bug Reports
1

image
image1457×736 26 KB

I’m sure I did everything right but unfortunately firecrawl-mcp doesn’t work in Cursor. I tried it in Windsurf and it works there.

When I run it through cmd it works fine:

image
image905×395 13.1 KB

PLEASE HELP ME

2

Hey, it seems you incorrectly added the server in the mcp.json file. Here’s an example of a server:

{
  "mcpServers": {
    "mcp-server-firecrawl": {
      "command": "npx",
      "args": ["-y", "firecrawl-mcp"],
      "env": {
        "FIRECRAWL_API_KEY": "YOUR_API_KEY_HERE"
      }
    }
  }
}

image
image1562×362 17.7 KB

1 Like
3

If you are in windows make sure the entry in the Json file is us below and also make sure only one of the server is enabled at a time I have found issues having both the Github and fire crawl mcp servers enabled at the same time having issues at this moment it is able to load only one server at a time the npx command won’t work as it is so you have to use the cmd command as below

"mcp-server-firecrawl": {
      "command": "cmd",
      "args": [
        "/c",
        "npx",
        "-y", "firecrawl-mcp"],
      "env": {
        "FIRECRAWL_API_KEY": "3a52f2cb80d4b"
      }
    }

Make sure only one server is enabled at a time has shown in the image below to work with the fire crawl and you can switch once you have used it click the enable or disabled button and then refresh to get it enabled

image
image2140×887 109 KB

4

Thank you very much