Claude Usage Overlay

Displays Claude.ai session and weekly usage stats as a floating overlay while you chat.

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         Claude Usage Overlay
// @namespace    https://greasyfork.org/users/tac-tac-go
// @version      1.0.0
// @description  Displays Claude.ai session and weekly usage stats as a floating overlay while you chat.
// @author       tac-tac-go
// @match        https://claude.ai/*
// @grant        none
// @license      MIT
// @homepageURL  https://greasyfork.org/users/tac-tac-go
// @supportURL   https://greasyfork.org/users/tac-tac-go
// ==/UserScript==

(function () {
  'use strict';

  function loadUsageViaIframe() {
    return new Promise((resolve) => {
      document.getElementById('usage-iframe')?.remove();

      const iframe = document.createElement('iframe');
      iframe.id = 'usage-iframe';
      iframe.src = '/settings/usage';
      iframe.style.cssText = 'position:fixed;top:-9999px;left:-9999px;width:1px;height:1px;';
      document.body.appendChild(iframe);

      iframe.onload = () => {
        let attempts = 0;
        const timer = setInterval(() => {
          attempts++;
          const iDoc = iframe.contentDocument;
          const bars = iDoc?.querySelectorAll('[role="progressbar"]');

          if (bars?.length >= 1) {
            clearInterval(timer);
            iframe.remove();

            const sessionPct = bars[0]?.getAttribute('aria-valuenow') ?? '?';
            const weeklyPct  = bars[1]?.getAttribute('aria-valuenow') ?? '?';
            const allP = Array.from(iDoc.querySelectorAll('p'));
            const resetTexts = allP.filter(p => p.textContent.includes('にリセット'));

            resolve({
              sessionPct,
              weeklyPct,
              sessionReset: resetTexts[0]?.textContent.trim() ?? '',
              weeklyReset:  resetTexts[1]?.textContent.trim() ?? '',
            });
          }

          if (attempts > 20) {
            clearInterval(timer);
            iframe.remove();
            resolve(null);
          }
        }, 200);
      };
    });
  }

  async function updateUsage() {
    const el = document.getElementById('claude-usage-overlay');
    el.textContent = 'Updating...';

    const data = await loadUsageViaIframe();

    if (!data) {
      el.textContent = 'Failed to load';
      return;
    }

    el.innerHTML = `
      <div style="font-weight:bold;margin-bottom:6px">📊 Claude Usage</div>
      <div>🕐 Session: <b>${data.sessionPct}%</b></div>
      <div style="font-size:10px;color:#aaa;margin-bottom:4px">${data.sessionReset}</div>
      <div>📅 Weekly: <b>${data.weeklyPct}%</b></div>
      <div style="font-size:10px;color:#aaa">${data.weeklyReset}</div>
      <div style="font-size:10px;color:#555;margin-top:6px">Click to refresh</div>
    `;
  }

  const overlay = document.createElement('div');
  overlay.id = 'claude-usage-overlay';
  overlay.style.cssText = `
    position:fixed; bottom:80px; right:16px; z-index:9999;
    background:#1e1e1e; color:#e0e0e0; padding:10px 14px;
    border-radius:8px; font-size:12px; border:1px solid #444;
    min-width:160px; line-height:1.6; cursor:pointer;
    box-shadow: 0 2px 8px rgba(0,0,0,0.4);
  `;
  overlay.textContent = 'Loading...';
  overlay.title = 'Click to refresh';
  overlay.onclick = updateUsage;
  document.body.appendChild(overlay);

  updateUsage();
  setInterval(updateUsage, 5 * 60 * 1000);
})();