How to install Signer in Windsurf

To install Signer in Windsurf, paste the "signer" block into ~/.codeium/windsurf/mcp_config.json and refresh the MCP panel in Cascade.

Built from the published package · server updated yesterday

1
Open the MCP config
In Windsurf, open Settings, then Cascade, then MCP servers, and choose to view the raw config.

Add the server

Paste this into mcp_config.json:

{
  "mcpServers": {
    "signer": {
      "command": "npx",
      "args": [
        "-y",
        "@haven_ai/signer"
      ]
    }
  }
}

3
Refresh
Click refresh in the MCP panel. The server and its tools appear in Cascade.

Config file: ~/.codeium/windsurf/mcp_config.json

MCP servers run with your permissions. If Signer needs an API key, add it under env in the config. Check its README.

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Does Signer work in Windsurf?

Yes. Windsurf supports local and remote mcp servers, and Signer installs with the steps above.

Signer does not show up in Windsurf. What now?

Restart Windsurf fully, check the JSON is valid, and make sure Node.js (for npx) is installed. See common MCP errors and fixes.

Is Signer safe?

It scores 75 of 100. Review the code before you install it, and only give it the access it needs. Grades and details.