McpVanguard
Active·★ 13·MIT·Updated 2026-10-09
McpVanguard is a security gateway for MCP agents that inspects traffic in real time and enforces security policy before sensitive calls reach the underlying tool. It works in local-first mode wrapping stdio MCP servers and in gateway mode exposing hardened SSE and Streamable HTTP endpoints. Transparent integration without rewriting existing MCP servers.
#agentic-ai#ai-security#anthropic-mcp#claude#cybersecurity#firewall#mcp#mcp-servers
01
Features
01Real-time traffic inspection and policy enforcement
02Multi-layer security: Rules (L1), Semantic (L2), Behavioral (L3)
03Supports stdio, SSE, and Streamable HTTP transports
04Metadata poisoning protection and cross-server isolation
05Integrity verification with signed manifests and Sigstore support
02
Compatibility
Python
3.11+
Verified via docs
03
Quick start
1
$ pip install mcp-vanguard
04
Use cases
↳Blocking chained exfiltration attacks by intercepting file reads and network posts
↳Audit mode for monitoring tool calls without blocking
↳Protecting Claude Desktop from malicious third-party skills
05
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