diff --git a/arkindex/schema.yml b/arkindex/schema.yml
index 8cad4480965a6f94b727dc9fdd228d86f75504b8..bb0a85902a33e01a9deeab07ab48d60f1d59d15e 100644
--- a/arkindex/schema.yml
+++ b/arkindex/schema.yml
@@ -751,7 +751,7 @@ paths:
       - elements
   /api/v1/element/{id}/:
     get:
-      description: Retrieve detailed information on a single element
+      description: Retrieve a single element's informations and metadata
       operationId: RetrieveElement
       parameters:
       - description: ''
@@ -781,8 +781,96 @@ paths:
                   id:
                     type: string
                   metadata:
+                    items:
+                      properties:
+                        dates:
+                          items:
+                            properties:
+                              day:
+                                nullable: true
+                                type: integer
+                              month:
+                                nullable: true
+                                type: integer
+                              type:
+                                enum:
+                                - exact
+                                - lower
+                                - upper
+                                - unknown
+                              year:
+                                type: integer
+                            required:
+                            - year
+                            - type
+                          type: array
+                        entity:
+                          properties:
+                            id:
+                              type: string
+                            name:
+                              type: string
+                            type:
+                              enum:
+                              - person
+                              - location
+                              - subject
+                              - organization
+                              - misc
+                          required:
+                          - name
+                          - type
+                          type: object
+                        id:
+                          type: string
+                        name:
+                          type: string
+                        revision:
+                          properties:
+                            author:
+                              type: string
+                            commit_url:
+                              readOnly: true
+                              type: string
+                            date:
+                              format: date-time
+                              type: string
+                            hash:
+                              type: string
+                            id:
+                              type: string
+                            message:
+                              type: string
+                            ref:
+                              type: string
+                            repo_id:
+                              readOnly: true
+                              type: string
+                          required:
+                          - date
+                          - hash
+                          - ref
+                          - message
+                          - author
+                          type: object
+                        type:
+                          enum:
+                          - text
+                          - html
+                          - date
+                          - location
+                          - entity
+                        value:
+                          type: string
+                      required:
+                      - type
+                      - name
+                      - value
+                      - revision
+                      - dates
+                      - entity
                     readOnly: true
-                    type: string
+                    type: array
                   name:
                     type: string
                   thumbnail_url:
@@ -842,8 +930,96 @@ paths:
                   id:
                     type: string
                   metadata:
+                    items:
+                      properties:
+                        dates:
+                          items:
+                            properties:
+                              day:
+                                nullable: true
+                                type: integer
+                              month:
+                                nullable: true
+                                type: integer
+                              type:
+                                enum:
+                                - exact
+                                - lower
+                                - upper
+                                - unknown
+                              year:
+                                type: integer
+                            required:
+                            - year
+                            - type
+                          type: array
+                        entity:
+                          properties:
+                            id:
+                              type: string
+                            name:
+                              type: string
+                            type:
+                              enum:
+                              - person
+                              - location
+                              - subject
+                              - organization
+                              - misc
+                          required:
+                          - name
+                          - type
+                          type: object
+                        id:
+                          type: string
+                        name:
+                          type: string
+                        revision:
+                          properties:
+                            author:
+                              type: string
+                            commit_url:
+                              readOnly: true
+                              type: string
+                            date:
+                              format: date-time
+                              type: string
+                            hash:
+                              type: string
+                            id:
+                              type: string
+                            message:
+                              type: string
+                            ref:
+                              type: string
+                            repo_id:
+                              readOnly: true
+                              type: string
+                          required:
+                          - date
+                          - hash
+                          - ref
+                          - message
+                          - author
+                          type: object
+                        type:
+                          enum:
+                          - text
+                          - html
+                          - date
+                          - location
+                          - entity
+                        value:
+                          type: string
+                      required:
+                      - type
+                      - name
+                      - value
+                      - revision
+                      - dates
+                      - entity
                     readOnly: true
-                    type: string
+                    type: array
                   name:
                     type: string
                   thumbnail_url:
@@ -904,8 +1080,96 @@ paths:
                   id:
                     type: string
                   metadata:
+                    items:
+                      properties:
+                        dates:
+                          items:
+                            properties:
+                              day:
+                                nullable: true
+                                type: integer
+                              month:
+                                nullable: true
+                                type: integer
+                              type:
+                                enum:
+                                - exact
+                                - lower
+                                - upper
+                                - unknown
+                              year:
+                                type: integer
+                            required:
+                            - year
+                            - type
+                          type: array
+                        entity:
+                          properties:
+                            id:
+                              type: string
+                            name:
+                              type: string
+                            type:
+                              enum:
+                              - person
+                              - location
+                              - subject
+                              - organization
+                              - misc
+                          required:
+                          - name
+                          - type
+                          type: object
+                        id:
+                          type: string
+                        name:
+                          type: string
+                        revision:
+                          properties:
+                            author:
+                              type: string
+                            commit_url:
+                              readOnly: true
+                              type: string
+                            date:
+                              format: date-time
+                              type: string
+                            hash:
+                              type: string
+                            id:
+                              type: string
+                            message:
+                              type: string
+                            ref:
+                              type: string
+                            repo_id:
+                              readOnly: true
+                              type: string
+                          required:
+                          - date
+                          - hash
+                          - ref
+                          - message
+                          - author
+                          type: object
+                        type:
+                          enum:
+                          - text
+                          - html
+                          - date
+                          - location
+                          - entity
+                        value:
+                          type: string
+                      required:
+                      - type
+                      - name
+                      - value
+                      - revision
+                      - dates
+                      - entity
                     readOnly: true
-                    type: string
+                    type: array
                   name:
                     type: string
                   thumbnail_url:
@@ -1941,8 +2205,96 @@ paths:
                   id:
                     type: string
                   metadata:
+                    items:
+                      properties:
+                        dates:
+                          items:
+                            properties:
+                              day:
+                                nullable: true
+                                type: integer
+                              month:
+                                nullable: true
+                                type: integer
+                              type:
+                                enum:
+                                - exact
+                                - lower
+                                - upper
+                                - unknown
+                              year:
+                                type: integer
+                            required:
+                            - year
+                            - type
+                          type: array
+                        entity:
+                          properties:
+                            id:
+                              type: string
+                            name:
+                              type: string
+                            type:
+                              enum:
+                              - person
+                              - location
+                              - subject
+                              - organization
+                              - misc
+                          required:
+                          - name
+                          - type
+                          type: object
+                        id:
+                          type: string
+                        name:
+                          type: string
+                        revision:
+                          properties:
+                            author:
+                              type: string
+                            commit_url:
+                              readOnly: true
+                              type: string
+                            date:
+                              format: date-time
+                              type: string
+                            hash:
+                              type: string
+                            id:
+                              type: string
+                            message:
+                              type: string
+                            ref:
+                              type: string
+                            repo_id:
+                              readOnly: true
+                              type: string
+                          required:
+                          - date
+                          - hash
+                          - ref
+                          - message
+                          - author
+                          type: object
+                        type:
+                          enum:
+                          - text
+                          - html
+                          - date
+                          - location
+                          - entity
+                        value:
+                          type: string
+                      required:
+                      - type
+                      - name
+                      - value
+                      - revision
+                      - dates
+                      - entity
                     readOnly: true
-                    type: string
+                    type: array
                   name:
                     type: string
                   thumbnail_url: