Anthropic has released the Claude Security plugin for Claude Code in beta, a multi-agent vulnerability scanner that runs in the terminal. The plugin adds a single command, /claude-security, which opens a menu of three jobs: Scan codebase, Scan changes, and Suggest patches. Installation requires two commands from the official Anthropic marketplace: /plugin install claude-security@claude-plugins-official and /reload-plugins. The plugin source is public in the claude-plugins-official repository, currently at version 0.10.0. The scan pipeline is structured as a dynamic workflow with six phases: Inventory, Threat model, Research, Sweep, Panel, and Adversarial. Research runs against four fixed categories: injection-and-input, auth-and-access, memory-and-unsafe, and crypto-and-secrets. The operational scale of a run is dictated by four distinct effort tiers: low, medium, high, and max. Depending on the selected tier, the maximum number of components is capped at 12 for low and medium tiers, expanding to 24 for high and max tiers.