Developer Fails to Automate Medium Publishing via Chrome DevTools Protocol

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A developer spent two hours attempting to programmatically publish an article to Medium using Chrome DevTools Protocol (CDP) and various browser automation techniques. Medium's story editor relies on a ProseMirror-like architecture whose internal state model cannot be updated through standard DOM manipulation methods such as innerHTML assignment or the deprecated execCommand API. Lower-level CDP methods like Input.insertText and character-by-character keyboard simulation also failed to trigger Medium's internal transaction system, causing the editor to treat the document as empty despite visible text. Clipboard-based workarounds were blocked because navigator.clipboard.writeText requires both explicit user permissions and a genuine user gesture, neither of which CDP can fully replicate. The experience highlights how modern rich-text editors actively resist automation by decoupling their internal state from raw DOM and input events.

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