A browser extension that sniffs out verification codes from your Gmail and copies them to your clipboard instantly.
- Searches your recent Gmail for OTP / verification code emails
- Extracts the code automatically using pattern matching
- Copies it straight to your clipboard with one click
- Optional AI mode (Claude or OpenAI) to identify the right email when pattern matching falls short
- Works on both Chrome and Firefox
- Firefox: Firefox Add-ons — listed, pending GCP OAuth review
- Chrome: Chrome Web Store — pending review
Both listings are awaiting Google OAuth app verification. Gmail access will not work until that review completes.
- Download the latest release zip from the Releases page
- Go to
chrome://extensions - Enable Developer mode (top right)
- Click Load unpacked and select the extracted folder
- Download the Firefox release zip from the Releases page
- Go to
about:debugging#/runtime/this-firefox - Click Load Temporary Add-on and select the
manifest-firefox.jsonfile
- Click the CodeHound icon in your toolbar
- Click Retrieve Code
- Approve Gmail access when prompted (first time only)
- The code is found and copied to your clipboard automatically
If the standard pattern matching doesn't find your code, you can enable AI mode:
- Click the settings icon in the extension popup
- Toggle Enable AI
- Select your provider (Claude or OpenAI)
- Paste in your API key
- Click Save Settings
AI mode sends email subjects (not full email content) to the selected AI provider to identify the most likely verification email.
| Permission | Reason |
|---|---|
identity |
Authenticate with Google to access Gmail |
clipboardWrite |
Copy the found code to your clipboard |
storage |
Save your AI settings locally |
gmail.readonly |
Read emails to search for verification codes |
CodeHound does not collect, store, or transmit any of your data. All processing happens locally in your browser. If AI mode is enabled, only email subjects are sent to the AI provider you configure — no full email content is ever shared.
See the full Privacy Policy.
MIT
Dog icon by deemakdaksina — Flaticon