mcp-guardian

> MCP Guardian is a runtime security, cost governance, and health monitoring proxy for MCP infrastructure. Three-layer detection engine (regex → schema → LLM), YAML policy engine with hot-reload, 50+ secret patterns + Shannon entropy, AST command validation, JWT algorithm pinning, default-deny fail-closed. Tracks real token costs via tiktoken, monitors server health with circuit breakers, and provides enterprise observability with Prometheus metrics and a web dashboard. ### Tags `security` `governance` `audit` `proxy` `observability` `cost-tracking` `zero-trust` `llm-security` `mcp` `infrastructure` ### Category `Security` Alternatively, you can submit via GitHub issue at: [](https://github.com/chatmcp/mcpso/issues)<https://github.com/chatmcp/mcpso/issues>

Manage / Proxy / Secure your MCP Servers

> MCP Guardian is a runtime security, cost governance, and health monitoring proxy for MCP infrastructure. Three-layer detection engine (regex → schema → LLM), YAML policy engine with hot-reload, 50+ secret patterns + Shannon entropy, AST command validation, JWT algorithm pinning, default-deny fail-closed. Tracks real token costs via tiktoken, monitors server health with circuit breakers, and provides enterprise observability with Prometheus metrics and a web dashboard. ### Tags `security` `governance` `audit` `proxy` `observability` `cost-tracking` `zero-trust` `llm-security` `mcp` `infrastructure` ### Category `Security` Alternatively, you can submit via GitHub issue at: [](https://github.com/chatmcp/mcpso/issues)<https://github.com/chatmcp/mcpso/issues>