# eVault > eNote creation, inventory, transfers, and MERS eRegistry actions. ## OpenAPI specs - [Authentication](https://developers.snapdocs.com/content/evault/specs/authentication.json) - [eNote Creation](https://developers.snapdocs.com/content/evault/specs/enote-creation.json) - [eHELOC Creation](https://developers.snapdocs.com/content/evault/specs/heloc-creation.json) - [eNote Inventory](https://developers.snapdocs.com/content/evault/specs/enote-inventory.json) - [eNote Custom Data](https://developers.snapdocs.com/content/evault/specs/enote-custom-data.json) - [MERS Actions](https://developers.snapdocs.com/content/evault/specs/mers-actions.json) - [Auto Validation](https://developers.snapdocs.com/content/evault/specs/auto-val.json) - [Lender Preferences](https://developers.snapdocs.com/content/evault/specs/lender-preferences.json) - [Users](https://developers.snapdocs.com/content/evault/specs/users.json) ## Shared platform guides Authentication, environments, webhooks, and testing are shared across every Snapdocs product — see [Getting Started](https://developers.snapdocs.com/platform/llms.txt). ## Authentication & Security - [Authentication Overview](https://developers.snapdocs.com/content/evault/guides/authentication-security/authentication_overview.md) - [Auth Bearer Token Caching](https://developers.snapdocs.com/content/evault/guides/authentication-security/auth_bearer_token_caching.md) - [Environments](https://developers.snapdocs.com/content/evault/guides/authentication-security/environments.md) ## Secondary Integrations - [Integrating to Snapdocs eVault](https://developers.snapdocs.com/content/evault/guides/secondary-integrations/integrating_to_snapdocs_evault.md) - [Transfer of rights](https://developers.snapdocs.com/content/evault/guides/secondary-integrations/transfer_of_rights.md) - [Registration](https://developers.snapdocs.com/content/evault/guides/secondary-integrations/registration_1.md) - [MERS document types](https://developers.snapdocs.com/content/evault/guides/secondary-integrations/mers_document_types.md) - [Webhooks](https://developers.snapdocs.com/content/evault/guides/secondary-integrations/webhooks.md) - [eVault Events Catalog](https://developers.snapdocs.com/content/evault/guides/secondary-integrations/change-status-webhook-events.md) - [Transfer and eDelivery Webhook payloads](https://developers.snapdocs.com/content/evault/guides/secondary-integrations/transfer_and_edelivery_webhook_payloads.md) - [Registration Webhooks](https://developers.snapdocs.com/content/evault/guides/secondary-integrations/registration.md) - [Other Mers Actions Webhooks](https://developers.snapdocs.com/content/evault/guides/secondary-integrations/mers_actions.md) - [Auto-Validation](https://developers.snapdocs.com/content/evault/guides/secondary-integrations/auto_validation.md) - [Auto Validation Workflow](https://developers.snapdocs.com/content/evault/guides/secondary-integrations/autovalidation_workflow.md) - [Add Document](https://developers.snapdocs.com/content/evault/guides/secondary-integrations/add_document.md)