BinanceMCPServer

# Security Best Practices This document outlines the security best practices implemented in the Binance MCP Server to ensure safe and secure operation. ## Overview The Binance MCP Server implements comprehensive security measures following Model Context Protocol best practices and industry standards for financial API interactions. ## Security Features ### 1. Credential Management ✅ **Environment Variable Protection** - API credentials are managed exclusively through environment variables - No hardcoded credentials in source code - Credential validation on startup - Protection against common placeholder values ✅ **Secure Configuration** ```bash # Required environment variables export BINANCE_API_KEY="your_api_key_here" export BINANCE_API_SECRET="your_api_secret_here" export BINANCE_TESTNET="true" # Recommended for development ``` ### 2. Input Validation & Sanitization ✅ **Enhanced Symbol Validation** - Alphanumeric character validation - Length constraints (3-20 characters) - Prevention of numeric-only symbols - Special character sanitization ✅ **Numeric Parameter Validation** - Positive number validation with bounds checking - Prevention of extremely large values - Type safety enforcement ✅ **Order Parameter Validation** - Strict order side validation (BUY/SELL only) - Comprehensive order type validation - Price validation for limit orders ### 3. Error Handling & Information Protection ✅ **Sanitized Error Messages** - Automatic detection and redaction of sensitive patterns - API key pattern masking - Secret information filtering - Safe error propagation ✅ **Structured Error Responses** ```json { "success": false, "error": { "type": "validation_error", "message": "Invalid symbol format", "timestamp": 1706123456789 } } ``` ### 4. Rate Limiting & Abuse Prevention ✅ **API Rate Limiting** - Binance API rate limits respected (1200 requests/minute) - Built-in rate limiter with sliding window - Graceful rate limit error handling ✅ **Request Validation** - Input size limits - Injection pattern detection - Request structure validation ### 5. Audit Logging & Monitoring ✅ **Security Event Logging** - Tool invocation tracking - Error event logging - Security warning detection - Request ID generation for tracing ✅ **Sensitive Data Protection** - No credential logging - Sanitized log outputs - Secure hash generation for identification ## Implementation Details ### Input Validation Functions ```python # Enhanced symbol validation def validate_symbol(symbol: str) -> str: """Validates and sanitizes trading symbols with security checks.""" # Positive number validation with bounds def validate_positive_number(value: float, field_name: str, min_value: float = 0.0, max_value: Optional[float] = None) -> float: """Validates numeric inputs with security bounds.""" # Limit parameter validation def validate_limit_parameter(limit: Optional[int], max_limit: int = 5000) -> Optional[int]: """Validates API limit parameters.""" ``` ### Error Sanitization ```python # Automatic sensitive data redaction def _sanitize_error_message(message: str) -> str: """Removes API keys, secrets, and other sensitive patterns.""" def _sanitize_error_details(details: Dict) -> Dict: """Sanitizes error detail objects.""" ``` ### Security Configuration ```python class SecurityConfig: """Centralized security configuration management.""" def __init__(self): self.rate_limit_enabled = True self.max_requests_per_minute = 60 self.enable_input_validation = True self.log_security_events = True ``` ## Configuration Options ### Environment Variables | Variable | Description | Default | Security Impact | |----------|-------------|---------|-----------------| | `BINANCE_API_KEY` | Binance API key | **Required** | ⚠️ Critical | | `BINANCE_API_SECRET` | Binance API secret | **Required** | ⚠️ Critical | | `BINANCE_TESTNET` | Use testnet environment | `false` | 🛡️ Recommended for dev | | `MCP_RATE_LIMIT_ENABLED` | Enable rate limiting | `true` | 🛡️ Security feature | | `MCP_MAX_REQUESTS_PER_MINUTE` | Rate limit threshold | `60` | 🛡️ Abuse prevention | | `MCP_INPUT_VALIDATION` | Enable input validation | `true` | 🛡️ Security feature | | `MCP_LOG_SECURITY` | Enable security logging | `true` | 📊 Monitoring | ## Security Checklist ### Development Environment - [ ] Use testnet for all development and testing - [ ] Never commit API credentials to version control - [ ] Use `.env` files for local development (git-ignored) - [ ] Validate all environment variables on startup - [ ] Enable comprehensive logging for debugging ### Production Environment - [ ] Use production API credentials with minimal required permissions - [ ] Enable all security features (rate limiting, input validation) - [ ] Monitor security audit logs regularly - [ ] Implement proper credential rotation policies - [ ] Use secure environment variable management - [ ] Enable network security (firewalls, VPNs) ### API Security - [ ] Restrict API key permissions to required operations only - [ ] Use IP whitelisting when possible - [ ] Monitor API usage patterns - [ ] Implement proper error handling without information leakage - [ ] Regular security audits and updates ## Security Monitoring ### Log Monitoring Monitor these security events in your logs: ``` SECURITY_EVENT: {"event_type": "tool_invocation", ...} SECURITY_EVENT: {"event_type": "configuration_validated", ...} SECURITY_EVENT: {"event_type": "rate_limit_exceeded", ...} SECURITY_EVENT: {"event_type": "validation_error", ...} ``` ### Common Security Patterns to Watch 1. **Repeated validation errors** - Possible probing attempts 2. **Rate limit violations** - Potential abuse or misconfiguration 3. **Large request patterns** - Possible DoS attempts 4. **Unusual tool usage patterns** - Possible unauthorized access ## Incident Response ### If API Keys Are Compromised 1. **Immediately disable** the compromised API key in Binance 2. **Generate new credentials** with proper security 3. **Review audit logs** for suspicious activity 4. **Update environment variables** across all deployments 5. **Monitor account** for unauthorized transactions ### If Server Is Compromised 1. **Shut down** the MCP server immediately 2. **Rotate all credentials** (API keys, secrets) 3. **Review system logs** for evidence of compromise 4. **Patch and update** all dependencies 5. **Conduct security audit** before restart ## Compliance & Standards This implementation follows: - **MCP Protocol Security Guidelines** - **OWASP API Security Top 10** - **Financial Services Security Standards** - **Python Security Best Practices** ## Regular Security Maintenance ### Monthly Tasks - [ ] Review and rotate API credentials - [ ] Update dependencies and security patches - [ ] Audit security logs for anomalies - [ ] Review and update security configurations ### Quarterly Tasks - [ ] Conduct comprehensive security audit - [ ] Review and update security documentation - [ ] Penetration testing (if applicable) - [ ] Security training updates ## Support & Reporting For security issues or questions: - **Create a security issue** (mark as confidential) - **Email:** [dossehdosseh14@gmail.com](mailto:dossehdosseh14@gmail.com) - **Include:** Detailed description, steps to reproduce, impact assessment --- **⚠️ Remember: When in doubt about security, choose the more restrictive option.**