Example snippet using Eglot code-actions with Helm

helm-eglot-code-actions.el

(defun helm-eglot--build-code-actions-source (menu-items)
  (let* ((execute-selected-action (lambda (action) (eglot--code-actions-execute-action (cdr (assoc action menu-items))))))
    (helm-build-sync-source "Eglot Code actions"
      :candidates
      (lambda () (mapcar #'car menu-items))
      :action `(("Execute action" . ,execute-selected-action)))))

(defun helm-eglot-code-actions (beg &optional end action-kind)
  "Offer to execute code actions between BEG and END using helm.
Interactively, if a region is active, BEG and END are its bounds,
else BEG is point and END is nil, which results in a request for
code actions at point"
  (interactive
   `(,@(eglot--region-bounds)
     ,(and current-prefix-arg
           (completing-read "[eglot] Action kind: "
                            '("quickfix" "refactor.extract" "refactor.inline"
                              "refactor.rewrite" "source.organizeImports")))))
  (unless (eglot--server-capable :codeActionProvider)
    (eglot--error "Server can't execute code actions!"))
  (let* ((menu-items (eglot-code-actions-menu-items beg end)))
    (helm :sources (helm-eglot--build-code-actions-source menu-items)
          :buffer "*helm Eglot Code Actions*")))