MCP-Bastion

MCP-Bastion is enterprise-grade security middleware for MCP servers, engineered to intercept and actively defend against prompt injection, PII leakage, and resource exhaustion for AI assistants and agentic workflows. It runs 100% locally to prevent sensitive data from leaving the enterprise network and includes advanced features like prompt injection blocking (Meta PromptGuard), PII redaction (Microsoft Presidio), infinite-loop/cost overrun protection, RBAC, real-time dashboards, audit logging, and webhook-based alerts. MCP-Bastion is ideal for enterprises running MCP-based AI integrations that require strict security, compliance, and cost governance.