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4 months ago
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Protect your clipboard before you paste!
Prompt Security is a blazing-fast, zero-config Go tool that automatically detects and filters sensitive data from your clipboard—before it can leak to large language models (LLMs) or online tools.
go install github.com/happytaoer/prompt-security@latest
prompt-security monitor
Or build from source:
git clone https://github.com/happytaoer/prompt-security.git
cd prompt-security
go mod tidy
go build -o prompt-security
./prompt-security monitor
- Real-time clipboard monitoring
- Automatic filtering of:
- Email addresses
- Phone numbers
- Credit card numbers
- Social Security Numbers (SSN)
- Custom string patterns (exact match)
- Configurable rules and replacements
- Easy CLI, zero config required to start
- Safe placeholder replacements
- Cross-platform (Windows, macOS, Linux)
- Prevents accidental data leaks to ChatGPT, Copilot, Gemini, etc.
- Enforces company security policies
- Protects privacy and sensitive business information
- Lets you use AI tools with peace of mind
- Developers using LLMs for code review or documentation
- Security teams enforcing clipboard data policies
- AI power users handling confidential information
- Anyone worried about copy-paste data leaks
When you run the application for the first time, a configuration file will be automatically created at ~/.prompt-security/config.json. You can manually edit this file; changes take effect after restarting the program.
About the configuration file:
- Path: ~/.prompt-security/config.json
- Automatically created on first run; if corrupted or deleted, it will be restored to default
- Main configuration logic is in internal/config/config.go
- Main fields:
{
"detect_emails": true,
"detect_phones": true,
"detect_credit_cards": true,
"detect_ssns": true,
"string_match_patterns": [
{
"name": "company_name",
"pattern": "Acme Corporation",
"enabled": true,
"replacement": "[COMPANY NAME]"
},
{
"name": "internal_project",
"pattern": "Project Phoenix",
"enabled": true,
"replacement": "[PROJECT NAME]"
}
],
"email_replacement": "[email protected]",
"phone_replacement": "+1-555-123-4567",
"credit_card_replacement": "XXXX-XXXX-XXXX-XXXX",
"ssn_replacement": "XXX-XX-XXXX",
"monitoring_interval_ms": 500,
"notify_on_filter": true
}
- Email: [a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}
- Phone: (\+\d{1,3}[\s-]?)?\(?\d{3}\)?[\s.-]?\d{3}[\s.-]?\d{4}
- Credit Card: \b(?:\d{4}[- ]?){3}\d{4}\b
- SSN: \b\d{3}-\d{2}-\d{4}\b
Configure custom sensitive words, project names, company names, etc. in string_match_patterns:
{
"name": "pattern_name",
"pattern": "exact text",
"enabled": true,
"replacement": "replacement"
}
- Periodically checks clipboard content
- Filters sensitive information using regular expressions and custom rules
- Replaces matches with safe placeholders
- Automatically writes the filtered content back to the clipboard
This way, any sensitive content you copy will be safely replaced before pasting into LLMs or web pages.
- Start monitoring:
./prompt-security monitor
- View current configuration:
- All clipboard content is processed locally; no network connection, no uploads
- Open source and fully auditable—use with confidence
MIT
