Under review on the Chrome Web Store

See through
AI responses

Real-time transparency for ChatGPT, Claude, Gemini, and more. Detect hedging, verify claims, and know when you're getting a real answer.

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Currently under review. Star the repo to get notified when it's live.

chatgpt.com

Is it safe to crack your knuckles every day?

Glassbox

Details

Moderate Trust

Response contains vague sourcing and unspecified studies.

72% direct

2 flags

3 claims

149 words

For most people, cracking your knuckles every day is not harmful. Some studies suggest that chronic, aggressive knuckle cracking might slightly reduce grip strength, but the evidence is weak...

Works everywhere you chat with AI

ChatGPT

Claude

Gemini

Perplexity

Copilot

DeepSeek

What Glassbox catches

Every AI chatbot hedges. Glassbox shows you exactly where and why.

Hedging detection

Spots phrases like "some studies suggest," "it depends," and "many experts believe" that sound authoritative but say nothing specific.

Claim verification

Extracts every factual claim, rates its confidence, and gives you a one-click search link to check it yourself.

Directness scoring

Measures whether the AI actually answered your question or gave you a framework to think about it yourself.

Inline highlights

Flagged text is highlighted directly in the response. Hover to see why it was flagged and what a more direct version would say.

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Rephrase suggestions

When a response is evasive, Glassbox suggests how to rephrase your question to get a more direct answer next time.

Works without an API key

Local analysis detects hedge phrases, weasel words, and structural patterns with zero API calls. Nothing leaves your browser.

How it works

Three seconds from install to insight.

Install the extension

Add Glassbox from the Chrome Web Store. No account needed, no sign-up. It works immediately.

Ask AI anything

Use ChatGPT, Claude, Gemini, or any supported chatbot like you normally would.

See the analysis

Glassbox adds a small banner above each response showing trust level, directness, flags, and claims. Expand for details.

Stop taking AI at face value

Glassbox is free, open source, and respects your privacy.

Star on GitHub

Chrome Web Store listing under review. Star the repo to get notified.

Privacy Policy

Last updated March 2026

The short version: Glassbox doesn't collect your data. Your conversations stay on your device. If you use the optional API analysis, text goes directly from your browser to OpenAI or Anthropic using your own key. There is no Glassbox server.

What Glassbox does

Glassbox is a browser extension that analyzes AI chatbot responses for transparency. It reads assistant message text on supported sites (ChatGPT, Claude, Gemini, Perplexity, Copilot, DeepSeek) and renders an analysis overlay showing trust scores, flagged language, and factual claims.

Data that stays on your device

All processing happens locally in your browser. Glassbox stores the following in Chrome's local storage, which never leaves your device:

Your preferences (enabled/disabled state, selected API provider). Your API key if you choose to provide one. Cached analysis results to avoid redundant API calls. Aggregate usage statistics displayed in the extension popup.

Optional API usage

When you provide an API key and enable deep analysis, the text of AI chatbot responses is sent directly from your browser to the API provider you selected (OpenAI or Anthropic). This request goes straight from your browser to their servers. Glassbox does not proxy, intercept, log, or store these requests.

Without an API key, Glassbox performs all analysis locally with zero network requests.

What Glassbox does not do

Glassbox does not collect personally identifiable information. It does not track your browsing history, keystrokes, or clicks. It does not use analytics, telemetry, or advertising services. It does not transmit any data to Glassbox-operated servers because there are none. It does not sell or share user data with third parties.

Third-party services

The only external services Glassbox communicates with are the ones you explicitly configure: OpenAI's API (api.openai.com) or Anthropic's API (api.anthropic.com). These communications only happen when you provide an API key and are governed by the respective provider's privacy policy.

Permissions

Glassbox requests access to specific AI chatbot websites to inject its content script and read assistant messages. It uses Chrome's storage API to save your preferences locally. It does not request access to any other websites or browser data.

Open source

Glassbox is open source. You can review the complete source code at github.com/owenkleinmaier/glassbox to verify these claims yourself.

Questions about this policy? Reach out at owen@owenkleinmaier.com

See throughAI responses