Install LFM2.5 2.6B Heretic in VS Code

What you need first

• VS Code, installed.
• Nothing else: the server runs on its publisher's machines and VS Code connects to it.

Steps

1. In your project, create .vscode/mcp.json, or open it. For every project, run MCP: Open User Configuration from the Command Palette instead.
2. Add this block. If the file already has servers, add only the entry inside it.

{
  "servers": {
    "lfm2-5-2-6b-heretic": {
      "type": "sse",
      "url": "https://vampelium-lfm2-5-2-6b-heretic.hf.space/gradio_api/mcp/sse"
    }
  }
}

3. Save the file and choose Start above the server's entry, or run MCP: List Servers. Its tools appear in Copilot Chat's agent mode.

Check it worked

Ask VS Code: List the tools of lfm2-5-2-6b-heretic. It should list 1 tool.

If it does not start

401 Unauthorized

The endpoint wants a sign-in or a key. Sign in when VS Code asks.

Nothing changes after a restart

The file is not valid JSON any more. Look for a missing comma where the block was added.