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User Guide
Learn how to use Aletheia effectively to understand language context and etymology.
- Select text on any webpage by clicking and dragging
- Right-click to open the context menu
- Click "Explain with AI"
- Read the analysis in the overlay
Aletheia provides three key pieces of information:
A visual indicator showing the educational context level:
| Level | Meaning |
|---|---|
| 🟢 Green | Neutral terminology |
| 🟡 Yellow | Some historical context worth knowing |
| 🟠 Orange | Significant etymological backstory |
| 🔴 Red | Strong historical/cultural implications |
A concise one-liner capturing the most important historical insight about the term.
Detailed context including:
- Word origins and evolution
- Historical usage
- Cultural significance
- Modern implications
- Click the Aletheia icon in your browser toolbar
- Click Sign In with LinkedIn
- Authorize Aletheia on LinkedIn's OAuth page
- You're signed in — a JWT token is stored locally for 24 hours
- Click the Aletheia icon in your toolbar
- Click Sign Out
- Your local token is cleared
LinkedIn OAuth provides identity verification without requiring a separate account. Aletheia stores only your LinkedIn user ID (a pseudonymous identifier) — no profile data, no connections, no activity.
- 3 analyses per hour
- 20 analyses per day
- 100 analyses per month
- Full etymology analysis
- All features included
- 30 analyses per hour
- 500 analyses per day
- 5,000 analyses per month
- Priority support
- Click the Aletheia icon → Upgrade
- Complete checkout via Stripe
- Your tier updates immediately on next sign-in
When you hit a limit, you'll see a message indicating which window (hourly, daily, or monthly) was exceeded and when it resets. You can upgrade to premium for higher limits.
Aletheia works best with:
- Individual words or short phrases
- Proper nouns and place names
- Idioms and expressions
- Technical terminology
- Historical references
- Be specific: Select the exact term you want to understand
- Include context: For phrases, select the complete expression
- Avoid long passages: Keep selections under ~50 words for best results
- Sends selected text to AWS for AI analysis
- Authenticates you via LinkedIn OAuth (one-time)
- Tracks usage counts per tier (anonymized in logs)
- Stores your preferences locally in browser storage
- Track your browsing history
- Store your selected text permanently
- Share data with third parties
- Access pages you don't explicitly analyze
- Store your LinkedIn profile information
For full details, see the Privacy Policy.
- Bug reports: GitHub Issues
- Feature requests: GitHub Issues
- Security issues: Security Policy
Last updated: 2026-02-19
Aletheia — AI-Powered Context Analysis | MIT License | Report Security Issue
Wiki verified: 2026-02-19