Kate has builtin support for Zig and automatically asks you to enable ZLS if if is found in your $PATH.

You can enable some LSP related settings like “Inlay Hints” or “Format on Save” under Settings -> LSP Client -> Client Settings

To apply in-editor-configuration or manually specify the path to zig or zls, open Settings -> LSP Client -> User Server Settings and add the following snippet (and remove comments):

{
  "servers": {
    "zig": {
      "command": ["/path/to/zls_executable"],
      "url": "https://github.com/zigtools/zls",
      "highlightingModeRegex": "^Zig$",
      // There are two ways to set config options:
      //   - edit your `zls.json` that applies to any editor that uses ZLS
      //   - set in-editor config options with the `initializationOptions` field below.
      //
      // Further information on how to configure ZLS:
      // https://zigtools.org/zls/configure/
      //
      // Support for `initializationOptions` in Kate requires at least ZLS `0.14.0-dev.22+a263b8dc6`.
      "initializationOptions": {
        // Whether to enable build-on-save diagnostics
        //
        // Further information about build-on save:
        // https://zigtools.org/zls/guides/build-on-save/
        // "enable_build_on_save": true,

        // omit the following line if `zig` is in your PATH
        "zig_exe_path": "/path/to/zig_executable"
      }
    }
  }
}

Code Actions on save

Kate does not support code actions on save.