Kaiza MCP Server

--- title: "ADR-005: Role-Based Access Control" description: "Decision to implement comprehensive role-based access control for AI agent operations" version: "2.0.0" last_updated: "2026-01-31" review_date: "2026-04-30" owners: ["security-team"] tags: ["adr", "security", "rbac", "access-control"] audience: ["technical", "executive"] --- # ADR-005: Role-Based Access Control ## Status Accepted ## Context AI agent systems require sophisticated access control mechanisms to ensure: - **Proper Authorization**: Operations performed only by authorized entities - **Separation of Duties**: Clear separation between different types of operations - **Audit Capability**: Clear responsibility assignment for all operations - **Scalability**: Access control that scales with enterprise requirements Traditional access control approaches are insufficient: - **Flat Permissions**: All-or-nothing permissions are too coarse - **User-Based Control**: Individual user permissions don't scale - **Static Permissions**: Static permissions can't adapt to changing requirements - **Limited Audit**: Limited ability to track and audit operations Enterprise requirements include: - **Role-Based Access**: Access based on job functions and responsibilities - **Granular Permissions**: Fine-grained control over specific operations - **Dynamic Authorization**: Authorization that adapts to context - **Compliance Support**: Support for enterprise compliance requirements ## Decision Implement a comprehensive Role-Based Access Control (RBAC) system with the following characteristics: ### Role Definition #### ANTIGRAVITY Role (Planning) - **Purpose**: Architectural planning and design definition - **Permissions**: - Read access to all files and documentation - Create and modify plans - Analyze existing code and architecture - Define requirements and specifications - **Limitations**: - No write access to implementation files - No execution of code changes - No modification of existing implementations #### WINDSURF Role (Execution) - **Purpose**: Implementation of approved plans - **Permissions**: - Write access to implementation files - Execute approved plans - Modify code based on approved plans - Update documentation for implemented changes - **Limitations**: - No ability to create new plans - No ability to modify plan requirements - No access outside plan-defined boundaries #### ADMIN Role (Administration) - **Purpose**: System administration and maintenance - **Permissions**: - System configuration and maintenance - User and role management - Audit log management - System monitoring and diagnostics - **Limitations**: - No access to user code or implementations - No ability to modify business logic - No access to sensitive user data #### AUDITOR Role (Audit) - **Purpose**: Audit and compliance operations - **Permissions**: - Read access to all audit logs - Read access to system configurations - Generate compliance reports - Perform security audits - **Limitations**: - No modification permissions - No access to user code - No system administration capabilities ### Permission Model #### Permission Categories - **Read Permissions**: Access to read files, documentation, and system information - **Write Permissions**: Ability to modify files, configurations, and system state - **Execute Permissions**: Ability to execute operations and run processes - **Admin Permissions**: System administration and management capabilities #### Permission Scopes - **Global Scope**: System-wide permissions across all workspaces - **Workspace Scope**: Permissions limited to specific workspaces - **Resource Scope**: Permissions limited to specific resources or file types - **Operation Scope**: Permissions limited to specific operations or functions #### Permission Constraints - **Time Constraints**: Permissions valid for specific time periods - **Location Constraints**: Permissions valid from specific network locations - **Context Constraints**: Permissions valid in specific contexts or situations - **Approval Constraints**: Permissions requiring explicit approval for use ### Access Control Implementation #### Authentication - **Multi-Factor Authentication**: Required for privileged roles - **Certificate-Based Authentication**: For system-to-system authentication - **Session Management**: Secure session management with timeout and renewal - **Identity Integration**: Integration with enterprise identity providers #### Authorization - **Role Assignment**: Dynamic role assignment based on user attributes - **Permission Validation**: Real-time permission validation for all operations - **Context-Aware Authorization**: Authorization based on context and risk factors - **Policy Engine**: Comprehensive policy engine for authorization decisions #### Audit and Monitoring - **Access Logging**: Complete logging of all access attempts and decisions - **Permission Auditing**: Regular auditing of role assignments and permissions - **Anomaly Detection**: Detection of unusual access patterns or behaviors - **Compliance Reporting**: Automated compliance reporting for access controls ## Rationale ### Security Benefits - **Principle of Least Privilege**: Users have only necessary permissions - **Separation of Duties**: Clear separation between different types of operations - **Accountability**: Clear responsibility assignment for all operations - **Audit Capability**: Comprehensive audit trail for all access decisions ### Operational Benefits - **Scalability**: Role-based access scales with organization growth - **Flexibility**: Dynamic role assignment and permission management - **Efficiency**: Streamlined access management through roles - **Consistency**: Consistent access control across all operations ### Enterprise Benefits - **Compliance**: Meets enterprise compliance requirements - **Integration**: Integration with enterprise identity and access management - **Governance**: Supports enterprise governance frameworks - **Risk Management**: Effective risk management through access controls ## Alternatives Considered ### Attribute-Based Access Control (ABAC) **Pros**: Fine-grained control, dynamic authorization **Cons**: Complex implementation, difficult to manage and audit ### Discretionary Access Control (DAC) **Pros**: Flexible, user-controlled access **Cons**: Insufficient for enterprise security, poor scalability ### Mandatory Access Control (MAC) **Pros**: High security, centralized control **Cons**: Rigid, complex implementation, poor usability ### Hybrid Access Control **Pros**: Combines benefits of multiple models **Cons**: Increased complexity, potential for security gaps ## Consequences ### Positive Consequences - **Enhanced Security**: Significant improvement in access control security - **Compliance Assurance**: Meets enterprise compliance requirements - **Operational Efficiency**: Streamlined access management through roles - **Audit Capability**: Comprehensive audit trail for all access decisions ### Negative Consequences - **Implementation Complexity**: Significant complexity in implementation - **Management Overhead**: Ongoing management of roles and permissions - **Performance Impact**: Potential performance impact from authorization checks - **Learning Curve**: Requires training for administrators and users ### Neutral Consequences - **Integration Requirements**: Integration with enterprise systems - **Maintenance Requirements**: Ongoing maintenance of access control system - **Documentation Requirements**: Comprehensive documentation of roles and permissions ## Implementation Notes ### Technical Implementation - **Role Management System**: Comprehensive role management system - **Policy Engine**: Advanced policy engine for authorization decisions - **Integration Layer**: Integration with enterprise identity systems - **Audit System**: Comprehensive audit and monitoring system ### Security Considerations - **Role Separation**: Strict separation between different roles - **Permission Validation**: Real-time validation of all permissions - **Audit Logging**: Complete logging of all access decisions - **Security Testing**: Comprehensive security testing of RBAC implementation ### Integration Considerations - **Identity Providers**: Integration with enterprise identity providers - **Directory Services**: Integration with enterprise directory services - **Compliance Tools**: Integration with compliance monitoring tools - **Security Tools**: Integration with enterprise security platforms ## Related Decisions - [ADR-001: Dual-Role Governance Model](./001-dual-role-governance.md) - [ADR-004: Zero-Trust Execution Model](./004-zero-trust-execution.md) - [ADR-006: Content Integrity Verification](./006-content-integrity-verification.md) --- **Decision Date**: 2026-01-19 **Decision Maker**: ATLAS-GATE MCP Security Team **Review Date**: 2026-04-19 **Status**: Accepted and Implemented