Data Governance & Security

Across All Spine Stores.

Data governance and security are not layers — they are cross-cutting concerns that apply to every layer, every store, and every action in SpineWorkspace.

Design Principles

1. Zero trust — Every access is verified
2. Least privilege — Minimum necessary permissions
3. Tenant isolation — No data leaks across tenants
4. Audit everything — Full traceability
5. Compliance by design — Regulations built into the architecture

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Governance Domains

Domain	Scope
Tenants	Multi-tenant isolation and data boundaries
Identity	Authentication and identity verification
Roles	Role-based access control
Permissions	Fine-grained permission model
Policies	Organizational policy enforcement
Purpose	Purpose limitation for data use
Consent	Consent management for data processing
Data Classification	Sensitivity and handling labels
Audit	Immutable audit trail
Retention	Data lifecycle management

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Tenant Isolation

Every Spine store enforces tenant isolation:

Store	Isolation Mechanism
Canonical Spine (Neon)	Row-level security, tenant_id column
Operational Spine (D1)	Per-tenant database
Edge / Session State (Workers)	Per-tenant namespace
Audit Store	Append-only, tenant-scoped queries
Cache (KV)	Tenant-prefixed keys

Isolation Rules

• Queries are always scoped to tenant_id
• Cross-tenant joins are never permitted
• Tenant data is physically separated where possible
• Tenant deletion removes all associated data

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Identity

Mechanism	Description
One Auth	Single sign-on across all surfaces
MFA	Multi-factor authentication
SSO	SAML/OIDC integration
API Keys	Service-to-service authentication
JWT	Token-based session management

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Roles & Permissions

Role Hierarchy

Organization Admin → Domain Admin → Manager → Member → Viewer

Permission Model

interface Permission {
  resource: string;      // e.g., 'work-item', 'entity', 'communication'
  action: string;        // e.g., 'read', 'write', 'approve', 'execute'
  scope: ScopeDef;       // e.g., 'own', 'team', 'domain', 'organization'
  conditions?: Condition[];
}

Permission Rules

• Permissions are additive — union of all granted permissions
• Deny always wins over allow
• Permissions are role-scoped and tenant-scoped
• Permissions are evaluated at the Spine query layer

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Policies

Organizational policies are enforced at every governance gate:

Policy Type	Description
Access policies	Who can access what
Action policies	Who can do what
Data policies	How data can be used
Retention policies	How long data is kept
Compliance policies	Regulatory requirements

Policy Evaluation

Policies are evaluated:

1. At every governance gate (before execution)
2. At every Spine query (before data access)
3. At every communication (before delivery)
4. At every reconciliation (before memory promotion)

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Purpose Limitation

Data is used only for stated purposes:

Purpose	Scope
Business operations	Day-to-day work execution
Analytics	Reporting and insights
AI reasoning	Twin and agent context
Compliance	Regulatory requirements
Audit	Investigation and review

Purpose Rules

• Data tagged with permitted purposes
• Access checked against purpose tags
• Purpose violations are logged and blocked
• Purpose can be updated with governance approval

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Consent Management

Consent Type	Description
Data collection	Consent to collect data from systems
Data processing	Consent to process data for AI reasoning
Data sharing	Consent to share data across domains
Data retention	Consent to retain data beyond active use

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Data Classification

Classification	Description	Handling
Public	No restriction	Standard access
Internal	Organization-wide	Auth required
Confidential	Role-restricted	Encryption + audit
Restricted	Named-person access	MFA + encryption + audit + DLP

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Audit Trail

Every action in SpineWorkspace produces an audit record:

interface AuditRecord {
  id: string;
  tenantId: string;
  timestamp: string;
  actor: ActorRef;
  action: string;
  resource: string;
  resourceId: string;
  outcome: 'success' | 'failure' | 'denied';
  details: Record<string, unknown>;
  ipAddress?: string;
  userAgent?: string;
}

Audit Rules

• Audit records are append-only
• Audit records cannot be modified or deleted
• Audit records are stored in the Audit Store
• Audit records are retained per compliance policy

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Retention

Data Type	Default Retention
Operational data	Active + 90 days
Communication logs	Active + 1 year
Audit records	7 years
Memory entries	Active + 2 years
Archived data	Per compliance policy

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Compliance

SpineWorkspace supports compliance with:

Regulation	Support
GDPR	Data subject rights, consent management, right to erasure
SOC 2	Access controls, audit trail, monitoring
HIPAA	PHI handling, BAA support, encryption
CCPA	Consumer rights, data inventory
ISO 27001	Security controls, risk management