Cerbos (Access Control) MCP Server for Mastra AIGive Mastra AI instant access to 19 tools to Add Policy, Add Schema, Authzen Evaluation, and more

Connect your Cerbos instance to any AI agent to streamline authorization management and policy auditing through natural language.

Mastra's agent abstraction provides a clean separation between LLM logic and Cerbos (Access Control) tool infrastructure. Connect 19 tools through Vinkius and use Mastra's built-in workflow engine to chain tool calls with conditional logic, retries, and parallel execution. deployable to any Node.js host in one command.

What you can do

• Permission Checks — Use check_resources to evaluate if a principal (user) has the rights to perform specific actions on resources.
• Query Planning — Generate AST query plans with plan_resources to filter database results based on complex authorization logic.
• Policy Management — List, retrieve, add, or delete policies (RBAC/ABAC) using the Admin API tools like list_policies and add_policy.
• Schema & Auditing — Inspect resource schemas and review access logs with list_auditLogs to ensure compliance.
• Health & Metrics — Monitor your PDP (Policy Decision Point) status with get_health and get_metrics directly from the chat.

The Cerbos (Access Control) MCP Server exposes 19 tools through the Vinkius. Connect it to Mastra AI in under two minutes — credentials fully managed, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.