Show HN: Mcpsec-A multi-agent SEC gate for MCP toolchains (scan →harden →rescan) (github.com)

MCPSEC has been announced as an innovative multi-agent security copilot designed specifically for Model Context Protocol (MCP) toolchains. This tool automates the security process for AI environments by scanning for vulnerabilities, simulating attack scenarios, generating remediation plans, and applying fixes—all while maintaining an auditable record of the security posture. With a sequential process that includes scanning for vulnerabilities, simulating prompt injections, auto-hardening configurations, and enforcing policies through CI (Continuous Integration) pipelines, MCPSEC significantly reduces the risks associated with AI toolchain deployments. The significance of MCPSEC lies in its ability to address the complex attack surfaces introduced by MCP tools, such as over-privileged access and supply chain vulnerabilities. By integrating functionality such as deterministic security checks, LLM-driven attack simulations, and automatic hardening techniques, MCPSEC provides visibility and testability into potential security weaknesses. Its architecture features specialized agents for inventory management, vulnerability intelligence, probing, and policy enforcement, which collectively enhance the security workflow for developers. This makes MCPSEC an essential tool for organizations utilizing MCP tools, as it helps ensure robust security validation and compliance, ultimately streamlining the delivery of secure AI solutions.