generated: '2026-09-03'
method: derived
source: openapi/n8n-public-api-openapi.yml (paths + response schemas)
description: >-
  Entity-relationship graph of the n8n public API, derived from resource paths
  and response schemas of the provider-published contract. All resources are
  scoped to a single n8n instance.
entities:
  - name: Workflow
    key: id
    fields: [id, name, active, isArchived, versionId, nodes, connections, settings, tags]
  - name: WorkflowVersion
    key: versionId
    note: Addressed at /workflows/{id}/{versionId}.
  - name: TestRun
    key: runId
    note: Workflow evaluation runs at /workflows/{id}/test-runs.
  - name: Execution
    key: id
    fields: [id, status, startedAt, stoppedAt, workflowId]
  - name: Credential
    key: id
    fields: [id, name, role, createdAt, updatedAt]
  - name: CredentialType
    key: credentialTypeName
    note: Schema readable at /credentials/schema/{credentialTypeName}.
  - name: User
    key: id
    fields: [id, email, firstName, lastName, isPending, role, mfaEnabled, createdAt, updatedAt]
  - name: Project
    key: id
    fields: [id, name, type]
  - name: Folder
    key: folderId
    note: Nested under projects at /projects/{projectId}/folders.
  - name: Tag
    key: id
    fields: [id, name]
  - name: Variable
    key: id
    fields: [id, key, value, type, project]
  - name: DataTable
    key: id
    fields: [id, name, columns, projectId, createdAt, updatedAt]
  - name: DataTableColumn
    key: columnId
  - name: DataTableRow
    key: id
  - name: CommunityPackage
    key: name
  - name: LogStreamingDestination
    key: id
    note: /settings/log-streaming/destinations.
relationships:
  - from: Workflow
    to: Execution
    type: has_many
    via: 'workflowId'
  - from: Workflow
    to: Tag
    type: has_many
    via: '/workflows/{id'
  - from: Workflow
    to: WorkflowVersion
    type: has_many
    via: 'versionId'
  - from: Workflow
    to: TestRun
    type: has_many
    via: '/workflows/{id'
  - from: Workflow
    to: Project
    type: belongs_to
    via: 'transferWorkflow destinationProjectId'
  - from: Workflow
    to: Folder
    type: belongs_to
    via: 'parentFolderId'
  - from: Project
    to: Folder
    type: has_many
    via: '/projects/{projectId'
  - from: Project
    to: User
    type: has_many
    via: '/projects/{projectId'
  - from: DataTable
    to: Project
    type: belongs_to
    via: 'projectId'
  - from: DataTable
    to: DataTableColumn
    type: has_many
    via: '/data-tables/{dataTableId'
  - from: DataTable
    to: DataTableRow
    type: has_many
    via: '/data-tables/{dataTableId'
  - from: Credential
    to: CredentialType
    type: belongs_to
    via: 'credentialTypeName'
  - from: Credential
    to: Project
    type: belongs_to
    via: 'transferCredential destinationProjectId'
  - from: Variable
    to: Project
    type: belongs_to
    via: 'project'
id_conventions:
  note: Opaque string ids; no documented id-prefix scheme (unlike Stripe-style prefixed ids).