Claude
4576597e64
Chrome Manifest V3 extension that intercepts personal data and substitutes it with user-defined replacements before sending to Claude.ai. Hooks fetch() in the page's main world to catch API requests, with bidirectional substitution (real→fake on send, fake→real on display via reveal mode). Includes popup UI with mapping management, live test/diff view, activity log with badge count, options page with import/export, and Shadow DOM traversal for Claude.ai compatibility. https://claude.ai/code/session_01Dvgwe7XMoSxnWXkih8p1Cw
57 lines
2.2 KiB
Markdown
57 lines
2.2 KiB
Markdown
# Silent Send
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A Chrome extension that intercepts personal information and substitutes it with user-defined replacements before sending to Claude.ai.
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## How it works
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1. **You define mappings** — e.g. "John Smith" → "Alex Demo", "john@gmail.com" → "alex@example.com"
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2. **You type normally** — you see your real text while composing
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3. **On send, it swaps** — the extension intercepts the API request and replaces real values with substitutes
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4. **Badge shows count** — the extension icon shows how many substitutions were made
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5. **Reveal mode** — optionally translates Claude's responses back to your real data
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## How to verify it's working
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- **Badge count** on the extension icon shows substitutions per page
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- **Activity tab** in the popup shows a timestamped log of every substitution
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- **Test tab** in the popup lets you type text and see the before/after diff
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- **Reveal mode** (eye icon) toggles showing real vs substitute data in responses
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- **Browser DevTools** → Console shows `[Silent Send] Substituted N value(s)` messages
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## Installation (Developer Mode)
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1. Clone this repo
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2. Open `chrome://extensions/` in Chrome
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3. Enable **Developer mode** (top right)
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4. Click **Load unpacked**
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5. Select this directory
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6. Navigate to claude.ai — the extension is active
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No build step needed. No Chrome Web Store required.
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## Architecture
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```
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manifest.json — Extension manifest (Manifest V3)
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src/
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background/
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service-worker.js — Badge management, logging coordination
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content/
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injector.js — Content script (isolated world) — loads config, bridges messaging
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content.js — Page script (main world) — hooks fetch(), does substitution
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content.css — Visual indicators (highlights, reveals)
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popup/
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popup.html/css/js — Quick access: add mappings, view activity, test mode
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options/
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options.html/css/js — Full mapping management, import/export, settings
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lib/
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substitution-engine.js — Core find/replace logic
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storage.js — Chrome storage wrapper
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```
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## Privacy
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- All data stays local in Chrome storage
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- No external servers, no telemetry, no analytics
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- The extension only activates on claude.ai
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