Built exclusively for Claude — real data, always
The Claude meter
that actually tells you
Real-time usage from Anthropic's own API. Context coaching, burn-rate predictions, weekly-cap forecasts, and one-click handoff to other AIs when you hit your limit.
Refactor all 47 modules and write documentation for each one.
Starting with the auth layer. Here's the refactored structure with type annotations…
Great. Now the database layer, then payments.
Working through database models…
Opus 4.5
Pro · 20×
67%
✏️ ~2,840 tokens
G
✦
X
◆
Gauge67%
Session left≈13 msgs
Used / Total27 / 40
Resets2h 14m
Weekly cap54% · Thu
⚡ At this pace ~37m to limit — switch to Sonnet for ~190 msgs
Context (78% full)
Continue in
G ChatGPT
✦ Gemini
X Grok
◆ Claude
Real
Claude data — Anthropic's own API, always
0
Servers. 100% local. Nothing tracked.
$0
To start — free tier is genuinely powerful
4
Handoff destinations when you hit your limit
Everything about your Claude usage.
Nothing made up.
Gauge reads directly from Anthropic's own API using your existing session. Every number is real — no estimates, no guesses, no rounding.
Live 5-hour + weekly meters
Exact % used, live reset countdown, and a separate weekly-cap bar — read from Claude's own usage API the moment the page loads. Separate Opus/Sonnet bars when your plan exposes them. Plan badge (Free / Pro / Max) with plan-aware messages remaining.
Free · 100% real data
Live composer token counter
Token count updates as you type using a bundled o200k tokenizer — no API calls needed. A context-window bar shows this conversation's real tokens vs the model limit, broken down by files, chat history, and system prompt.
Free
Burn-rate & weekly-cap forecast
"At this pace you'll hit the session limit in ~37m." "At this week's pace you'll hit the weekly cap by Thursday." Prediction text always visible to all users. Pro adds browser push notifications at your custom threshold.
Free (text) · Pro (push alerts)
Context trim-coach + model advisor
"Your 3 files are 61K — detach to reclaim ~30%." One-click model switch when Opus is running low: "Switch to Sonnet for ~190 msgs." Cache timer shows the ~5-min prompt-cache countdown so you know why replies slow down.
Free
Usage history & time-of-day profile
7-day strip + heatmap showing when you burn hottest and your best time to start heavy work. Export to CSV or JSON. 2× boost-window badge always visible. 30-day calendar is Pro.
Free (7 days) · Pro (30 days)
Predictive push alerts (Pro)
Browser push notification fires once per window when you're about to run out — based on live burn rate and your custom threshold. Free users always see the prediction text in the strip; Pro adds the push so you're never caught off guard.
Pro
Hit your Claude limit?
Keep working — don't stop.
One click sends your full conversation — both sides, all code blocks — to another AI, formatted for that destination. No copy-paste fumbling. We call it the Resume Kit.
📋
Resume Kit — not just copy-paste
Gauge extracts your full both-sides transcript, formats it correctly for the destination AI, attaches code blocks as separate files, and opens the new tab — all in one click. The destination AI gets full context and picks up exactly where Claude left off. Copy & Download (.md) is always unlimited and free.
ChatGPT
Full transcript + code files sent to ChatGPT, formatted for GPT-style context.
Handoff destination
Gemini
Conversation handed off to Gemini with structured context ready to continue.
Handoff destination
Grok
Full context transferred to Grok via clipboard, opened in a new tab instantly.
Handoff destination
New Claude chat
Start a fresh Claude session with your conversation context pre-filled.
Handoff destination
Note: Gauge only tracks Claude usage — that's the only platform with a real usage API. ChatGPT, Gemini, and Grok are handoff destinations only. We don't estimate or display usage for other platforms because we believe honest data is better than guesses.
Free is genuinely powerful.
Pro adds intelligence on top.
No core Claude tracking features are locked behind Pro. Pro adds automation, depth, and push notifications.
Free$0 forever
Live 5-hour session meter — exact %, real API data
Weekly-cap meter + per-model Opus/Sonnet bars
Plan badge (Free/Pro/Max) + toolbar icon % badge
Live composer token counter as you type
Context-window bar + files/history/system breakdown
Context trim-coach + one-click model-switch advisor
Burn-rate prediction text + weekly-cap forecast text
Cache timer (~5-min prompt-cache countdown)
5 cross-platform handoffs per day (Resume Kit)
Copy & Download transcript (.md) — always unlimited
7-day usage history strip + heatmap
Time-of-day usage profile + CSV/JSON export
2× boost-window badge · Dark mode · Keyboard shortcut
Predictive push alerts (see text only, no push)
30-day history calendar (7 days only)
API cost tracker (locked preview)
One-click bloat removal (visible, locked)
Pro$2/mo · $20 lifetime
Everything in Free
Predictive push alerts — browser notification before you run out, once per window
Boost-window notifications — push when Anthropic's 2× promo goes live
30-day usage history — full heatmap calendar
Unlimited handoffs — no 5/day cap
API cost tracker — real month-to-date Anthropic API spend
One-click bloat removal — Remove button on context-eating attachments
License key synced across all your Chrome devices
Start free. Pro for $2/month.
Free is real and useful. Pro adds intelligence and automation on top.
Free
$0
forever · no card needed
- Live Claude meter — real API data
- Weekly-cap bar + per-model limits
- Composer token counter + context bar
- Trim-coach + model-switch advisor
- Burn-rate & weekly forecast (text)
- 5 handoffs/day to GPT/Gemini/Grok/Claude
- Copy & Download (.md) — unlimited
- 7-day usage history + time-of-day profile
- Predictive push alerts
- 30-day history calendar
- Unlimited handoffs
- API cost tracker
Best value
Pro Monthly
$2
per month · cancel anytime
- Everything in Free
- Predictive browser push alerts
- Boost-window push notifications
- 30-day usage history heatmap
- Unlimited handoffs (no daily cap)
- API cost tracker (month-to-date $)
- One-click bloat removal
- License synced across all devices
Pro Lifetime
$20
one-time · all future updates
- Everything in Pro Monthly
- Pay once, use forever
- All future Pro features included
- Works across all your Chrome devices
- Instant license key by email
Questions
Why does Gauge only track Claude and not ChatGPT or Gemini? +
Because Claude is the only major AI platform that exposes real usage data through its own API. ChatGPT and Grok have no public usage API — so any "tracking" would be guesswork. We believe honest data beats confident estimates. Gauge tracks Claude precisely and uses the other platforms only as handoff destinations.
How does Gauge read my Claude usage without an API key? +
Gauge intercepts the same internal API call that claude.ai already makes when you're logged in. Your session is already authenticated — we read the usage data flowing between claude.ai and Anthropic's servers. No extra credentials, no new accounts, no API keys needed.
What is the Resume-Kit handoff? +
When you hit your Claude limit, clicking a handoff button extracts your full both-sides conversation, formats it correctly for the destination AI (ChatGPT, Gemini, Grok, or a new Claude chat), attaches code blocks as separate files, and opens the destination in a new tab. It's structured context transfer — the other AI picks up exactly where Claude left off.
Does Gauge send my conversations anywhere? +
No. Gauge has no servers. All processing is local in your browser. Usage data, history, and settings stay in chrome.storage on your device only. The only external call is to Polar.sh to validate your Pro license key — no conversation content, ever.
What does the 2× boost-window badge mean? +
Anthropic occasionally doubles usage limits during promotional windows. Gauge detects active boosts and shows a badge. Free users see the badge. Pro users also get a push notification when the boost starts so they can schedule heavy tasks around it.
Does it work on Edge, Brave, and Arc? +
Yes — any Chromium-based browser. Chrome, Edge, Brave, Arc, and Vivaldi all supported. Firefox is not yet supported.
The Claude meter
you actually needed.
Real data. No guesses. Free forever.
⬇ Add Gauge to Chrome — Free