Hide project chats in Claude's sidebar. Starred chats remain visible. (Inspired by vmotta8/claude-hide)

claude-hide.user.js

// ==UserScript==
// @name         Claude Hide Project Chats
// @namespace    fuwn-claude-hide
// @version      1.0.0
// @description  Hide project chats in Claude's sidebar. Starred chats remain visible.
// @author       Fuwn
// @match        https://claude.ai/*
// @run-at       document-start
// @license      GPL-3.0-only
// ==/UserScript==

(() => {
  "use strict";

  const projectChatUUIDs = new Set();
  const isInsideProject = () => window.location.pathname.includes("/project/");
  const debounce = (callback, delay) => {
    let timeout;

    return (...args) => {
      clearTimeout(timeout);

      timeout = setTimeout(() => callback(...args), delay);
    };
  };
  const hideProjectChats = () => {
    if (isInsideProject()) return;

    document.querySelectorAll('a[href^="/chat/"]').forEach((link) => {
      const href = link.getAttribute("href");

      if (!href) return;

      const chatUUID = href.replace("/chat/", "").split("?")[0];
      const chatItem = link.closest("li");

      if (chatItem && projectChatUUIDs.has(chatUUID))
        chatItem.style.display = "none";
    });
  };
  const debouncedHide = debounce(hideProjectChats, 50);
  const originalFetch = window.fetch;

  window.fetch = async (...args) => {
    const response = await originalFetch.apply(window, args);

    try {
      const url = typeof args[0] === "string" ? args[0] : args[0]?.url;

      if (url?.includes("/chat_conversations")) {
        const data = await response.clone().json();

        if (Array.isArray(data)) {
          data
            .filter((chat) => chat.project_uuid)
            .forEach((chat) => projectChatUUIDs.add(chat.uuid));
          setTimeout(hideProjectChats, 100);
        }
      }
    } catch {}

    return response;
  };

  const startObserver = () => {
    new MutationObserver(debouncedHide).observe(document.body, {
      childList: true,
      subtree: true,
    });
  };

  document.readyState === "loading"
    ? document.addEventListener("DOMContentLoaded", startObserver)
    : startObserver();
})();