Border for VS Code

com.clawhard/border

Debug CORS: send the real preflight, get Chrome's exact error and the headers that fix it.

client:VS Code transport:streamable-http tools:2

Install Border in VS Code

.vscode/mcp.json

{
  "servers": {
    "border": {
      "type": "http",
      "url": "https://border.clawhard.com/mcp"
    }
  }
}

Requires agent mode. MCP: Open User Configuration puts the same block in every workspace. VS Code docs