Contrast ratio vs 4.5 for one hex on white

In SourceWeft

1. Open Contrast ratio vs 4.5 for one hex on white in the dashboard and add it to a workspace.
2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

{
  "mcpServers": {
    "hex-contrast-aa": {
      "type": "http",
      "url": "https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/hex-contrast-aa/mcp"
    }
  }
}