> ## Documentation Index
> Fetch the complete documentation index at: https://docs.spineworkspace.com/llms.txt
> Use this file to discover all available pages before exploring further.

# HR Architecture: Domain Projection and Contracts

> Understand how the Human Resources domain is architected as a projection of Spine Fabric, including its domain contract and reference architecture.

The HR domain is not a standalone application. It is a projection of Spine Fabric, assembled on demand from ingested source systems and governed by a domain contract that defines entities, capabilities, views, and workflows.

## Domain Contract

```yaml theme={null}

domain: human-resources
purpose: people operations and talent management
entities:
  - Employee
  - Candidate
  - JobRequisition
  - Interview
  - Offer
  - Review
  - Compensation
  - Policy
capabilities:
  - hr.candidate.read
  - hr.candidate.stage.update
  - hr.offer.create
  - hr.employee.status.update
  - hr.review.launch
  - hr.workflow.onboarding.start
  - hr.workflow.offboarding.start
views:
  - Open Roles
  - Interview Loops
  - People Directory
  - Review Cycle
  - Onboarding Queue
workflows:
  - Recruiting
  - Onboarding
  - Performance Review
  - Offboarding
  - Compensation Review
integrations:
  - workday
  - bamboohr
  - greenhouse
  - lever
  - docusign
  - slack
  - gmail
```

## Architecture Layers

* **Domain Projection:** maps unified entities to HR-specific views and surfaces.
* **Context:** assembles candidate, employee, and task context from multiple sources on demand.
* **Agent:** Twin and domain agents operate on HR context with specialized skills.
* **Capability:** governs what actions are allowed and produces receipts for audit.
* **Workflow:** orchestrates multi-step processes with handoffs and approvals.
* **Integration:** connects to Workday, Greenhouse, Lever, DocuSign, Slack, Gmail, and BambooHR.
* **Event:** produces CandidateStageUpdated, OfferAccepted, ReviewClosed, and other domain events.

## Related

* [Spine Fabric](/internal-docs/domains/human-resources/spine-fabric)
* [System Flow](/internal-docs/domains/human-resources/system-flow)
* [Execution Flow](/internal-docs/domains/human-resources/execution-flow)
* [Platform: Spine Fabric](/platform/spine-fabric)


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