Knowledge Based Access Control (KBAC) is a fine-grained, externalized authorization platform built by IndyKite for applications, APIs, data, and AI agents. Rather than relying on static, role-based access models, KBAC uses a graph-based policy engine to make dynamic, context-aware access decisions informed by real-time data, relationships, and identity context. Key capabilities include: - Centralized, cloud-based authorization for applications and APIs, decoupled from application code - A dynamic policy engine that replaces hard-coded, role-based permissions with flexible, context-driven authorization policies - Graph-based data modeling that contextualizes identity, data, and relationships to break access silos - Enforcement of least-privilege access and zero trust principles at every data access point - A context-aware API that responds to real-time data changes, data enrichment updates, and policy adjustments - Compliance with open standards including AuthZen, OAuth/OpenID, and MCP KBAC is designed to address common access control challenges such as role and entitlement explosion, overprovisioning, tightly coupled access logic, and the need to serve partners, distributors, and customers with timely access services. Use cases include securing AI agents, externalizing access control, enabling intelligent customer experiences, and supporting secure B2B data sharing.