It seems to work on my PC without the “tricks” I am writing in the new chapter. Two things worth checking:

Have started Emacs Server? – e.g. M-x server-start Have loaded org-protocol and org-roam-protocol? – e.g. M-x load-library Alternative to M-x, you can put this in your config.

(server-start)
(require 'org-protocol)
(require 'org-roam-protocol)

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