Has anyone managed to get the new Compose Hot Relo...

# compose

[Wayne]

Has anyone managed to get the new Compose Hot Reload MCP server working with Codex? It seems to work fine with Claude, but on Codex I get an error:

⚠ MCP client for `compose-hot-reload` failed to start: MCP startup failed: handshaking with MCP server failed: connection closed: initialize response

My codex configuration (in config.toml) is

[mcp_servers.compose-hot-reload]
command = "./gradlew"
args = ["--no-daemon", "--quiet", "--console=plain", "desktopApp:hotMcpServer"]

For reference, the working configuration with Claude is (in .mcp.json):

{
  "mcpServers": {
    "compose-hot-reload": {
      "command": "./gradlew",
      "args": [
        "--no-daemon",
        "--quiet",
        "--console=plain",
        "desktopApp:hotMcpServer"
      ]
    }
  }
}

[Wayne]

Looks like there might be some erroneous stdout output that is causing issues.

Using @modelcontextprotocol/inspector shows that this line is in stdout and is (obviously) not a json-rpc object:

kotlin-logging: initializing... active logger factory: Slf4jLoggerFactory

I'm guessing claude and the mcp inspector probably handles malformed input more gracefully than codex

[Wayne]

Ok, it's fixed by updating kotlin-logging to 8.0.4 which allows you to disable the start-up log line: https://github.com/oshai/kotlin-logging/pull/602

[Wayne]

Filed issue and proposed fix here: https://youtrack.jetbrains.com/issue/CMP-10258/hotMcpServer-broken-in-Codex-proposed-fix-included