You Shall Not Pass — Allow/Deny Policies for MCP Tools Are Now in Heimdall
Heimdall MCP, a transparent proxy for MCP tools, has released version 1.2, introducing a two-level policy configuration system. This update allows administrators to define granular permissions for tools, prompts, and resources that each MCP server can access. The new policy system merges global and local configurations with a security-first approach, where deny rules take precedence and local configurations can only add further restrictions. AI
IMPACT Enhances security and control for AI agent development environments by allowing fine-grained access policies.