diff --git a/settings.json b/settings.json
index ac0902f..f6c01a7 100644
--- a/settings.json
+++ b/settings.json
@@ -40,4 +40,591 @@
     "allow_all_domains": true,
     "domains_whitelist": ["localhost","dodoc.3peaks.re"]
   },
+
+  "structure": {
+    "projects": {
+      "path": "",
+      "preview": {
+        "width": 1200,
+        "height": 1200,
+        "thumbs": {
+          "resolutions": [50, 320, 640]
+        }
+      },
+      "fields": {
+        "name": {
+          "type": "string"
+        },
+        "date_created": {
+          "type": "date",
+          "default": "current",
+          "read_only": true
+        },
+        "date_modified": {
+          "type": "date",
+          "default": "current",
+          "override": true
+        },
+        "password": {
+          "type": "string"
+        },
+        "authors": {
+          "type": "array"
+        },
+        "keywords": {
+          "type": "array"
+        },
+        "description": {
+          "type": "string"
+        },
+        "folder": {
+          "type": "string"
+        },
+        "editing_limited_to": {
+          "type": "string",
+          "options": ["everybody", "with_password", "only_authors", "nobody"],
+          "default": "everybody"
+        },
+        "viewing_limited_to": {
+          "type": "string",
+          "options": ["everybody", "only_authors", ""],
+          "default": "everybody"
+        }
+      },
+      "medias": {
+        "thumbs": {
+          "resolutions": [180, 360, 1600]
+        },
+        "fields": {
+          "date_created": {
+            "type": "date",
+            "default": "current",
+            "read_only": true
+          },
+          "date_modified": {
+            "type": "date",
+            "default": "current",
+            "override": true
+          },
+          "date_uploaded": {
+            "type": "date",
+            "default": "current",
+            "read_only": true
+          },
+          "media_filename": {
+            "type": "string"
+          },
+          "original_media_filename": {
+            "type": "string"
+          },
+          "type": {
+            "type": "string",
+            "options": [
+              "image",
+              "video",
+              "audio",
+              "text",
+              "code",
+              "stl",
+              "document",
+              "other"
+            ],
+            "default": "other"
+          },
+          "fav": {
+            "type": "boolean",
+            "default": false
+          },
+          "ratio": {
+            "type": "number"
+          },
+          "duration": {
+            "type": "number"
+          },
+          "authors": {
+            "type": "array"
+          },
+          "keywords": {
+            "type": "array"
+          },
+          "caption": {
+            "type": "string"
+          },
+          "file_meta": {
+            "type": "array",
+            "read_only": true
+          }
+        }
+      }
+    },
+    "authors": {
+      "path": "_authors",
+      "preview": {
+        "width": 1200,
+        "height": 1200,
+        "thumbs": {
+          "resolutions": [50, 180, 640]
+        }
+      },
+      "fields": {
+        "name": {
+          "type": "string"
+        },
+        "password": {
+          "type": "string",
+          "transform": "crypt"
+        },
+        "date_created": {
+          "type": "date",
+          "default": "current",
+          "read_only": true
+        },
+        "email": {
+          "type": "string",
+          "show_only_to": ["self", "admin"]
+        },
+        "role": {
+          "type": "string",
+          "options": ["contributor", "participant", "admin"],
+          "default": "contributor",
+          "only_admin_can_edit": true
+        },
+        "description": {
+          "type": "string"
+        },
+        "nfc_tag": {
+          "type": "string"
+        },
+        "last_messages_read_in_channels": {
+          "type": "array"
+        }
+      }
+    },
+    "publications": {
+      "path": "_publications",
+      "preview": {
+        "width": 1200,
+        "height": 1200,
+        "thumbs": {
+          "resolutions": [180, 640]
+        }
+      },
+      "fields": {
+        "name": {
+          "type": "string"
+        },
+        "password": {
+          "type": "string"
+        },
+        "authors": {
+          "type": "array"
+        },
+        "keywords": {
+          "type": "array"
+        },
+
+        "editing_limited_to": {
+          "type": "string",
+          "options": ["everybody", "with_password", "only_authors", "nobody"],
+          "default": "everybody"
+        },
+        "viewing_limited_to": {
+          "type": "string",
+          "options": ["everybody", "only_authors", ""],
+          "default": "everybody"
+        },
+        "date_created": {
+          "type": "date",
+          "default": "current",
+          "read_only": true
+        },
+        "date_modified": {
+          "type": "date",
+          "default": "current",
+          "override": true
+        },
+        "date_submitted": {
+          "type": "date"
+        },
+        "description": {
+          "type": "string"
+        },
+        "attached_to_project": {
+          "type": "string"
+        },
+        "show_on_external_domain": {
+          "type": "boolean"
+        },
+        "template": {
+          "type": "string",
+          "options": [
+            "page_by_page",
+            "carreau",
+            "video_assemblage",
+            "stopmotion_animation",
+            "mix_audio_and_video",
+            "mix_audio_and_image",
+            "drawing_pad",
+            "video_effects",
+            "story"
+          ],
+          "default": "page_by_page"
+        },
+        "style": {
+          "type": "string",
+          "options": ["standard", "feuille de choux", "human tech days"],
+          "default": "standard"
+        },
+        "width": {
+          "type": "number"
+        },
+        "height": {
+          "type": "number"
+        },
+        "header_left": {
+          "type": "string"
+        },
+        "header_right": {
+          "type": "string"
+        },
+        "margin_left": {
+          "type": "number"
+        },
+        "margin_right": {
+          "type": "number"
+        },
+        "margin_top": {
+          "type": "number"
+        },
+        "margin_bottom": {
+          "type": "number"
+        },
+        "show_page_number": {
+          "type": "boolean"
+        },
+        "gridstep": {
+          "type": "number"
+        },
+        "snap_to_grid": {
+          "type": "boolean"
+        },
+        "pages": {
+          "type": "array"
+        },
+        "removed_pages": {
+          "type": "array"
+        },
+        "layers": {
+          "type": "array"
+        },
+        "medias_slugs": {
+          "type": "array"
+        },
+        "effects": {
+          "type": "array"
+        },
+        "is_model": {
+          "type": "boolean"
+        },
+        "follows_model": {
+          "type": "string"
+        },
+        "number_of_medias": {
+          "type": "number",
+          "only_admin_can_edit": true
+        }
+      },
+      "medias": {
+        "thumbs": {
+          "resolutions": [180, 360, 1600]
+        },
+        "fields": {
+          "slugProjectName": {
+            "type": "string"
+          },
+          "slugMediaName": {
+            "type": "string"
+          },
+          "date_created": {
+            "type": "date",
+            "default": "current",
+            "read_only": true
+          },
+          "date_modified": {
+            "type": "date",
+            "default": "current",
+            "override": true
+          },
+          "caption": {
+            "type": "string"
+          },
+          "instructions": {
+            "type": "string"
+          },
+          "hide_instructions_when_fulfilled": {
+            "type": "boolean"
+          },
+          "available_modes": {
+            "type": "array"
+          },
+          "answers": {
+            "type": "string"
+          },
+          "authors": {
+            "type": "array"
+          },
+          "custom_css": {
+            "type": "string"
+          },
+          "page_id": {
+            "type": "string"
+          },
+          "layer_id": {
+            "type": "string"
+          },
+          "type": {
+            "type": "string",
+            "options": [
+              "text",
+              "placeholder",
+              "divider",
+              "solid_color",
+              "rectangle",
+              "free_drawing",
+              "ellipsis",
+              "line",
+              "arrow",
+
+              "image",
+              "video",
+              "audio",
+              "code",
+              "stl",
+              "document",
+              "other"
+            ],
+            "default": "other"
+          },
+          "color": {
+            "type": "string"
+          },
+          "media_filename": {
+            "type": "string"
+          },
+          "duration": {
+            "type": "number",
+            "clip": {
+              "min": 0,
+              "max": 999
+            }
+          },
+          "volume": {
+            "type": "number",
+            "clip": {
+              "min": 0,
+              "max": 100
+            }
+          },
+          "drawing_paths": {
+            "type": "string"
+          },
+          "transition_in": {
+            "type": "string"
+          },
+          "transition_out": {
+            "type": "string"
+          },
+          "x": {
+            "type": "number"
+          },
+          "y": {
+            "type": "number"
+          },
+          "rotate": {
+            "type": "number"
+          },
+          "width": {
+            "type": "number"
+          },
+          "height": {
+            "type": "number"
+          },
+          "fit_mode": {
+            "type": "string"
+          },
+          "locked_in_place": {
+            "type": "boolean"
+          },
+          "plain_text": {
+            "type": "boolean"
+          },
+          "only_numbers": {
+            "type": "boolean"
+          },
+          "force_text_style": {
+            "type": "string"
+          },
+          "loop_play": {
+            "type": "boolean"
+          },
+          "basic_player": {
+            "type": "boolean"
+          },
+          "z_index": {
+            "type": "number",
+            "clip": {
+              "min": -20000,
+              "max": 20000
+            }
+          },
+          "canvas_information": {
+            "type": "string",
+            "escape": false
+          },
+          "file_meta": {
+            "type": "array",
+            "read_only": true
+          },
+          "margin": {
+            "type": "number"
+          },
+          "font_size_percent": {
+            "type": "number"
+          },
+          "opacity": {
+            "type": "number"
+          },
+          "blend_mode": {
+            "type": "string"
+          },
+          "fill_color": {
+            "type": "string"
+          },
+          "stroke_color": {
+            "type": "string"
+          },
+          "stroke_width": {
+            "type": "number"
+          },
+          "placeholder_meta_reference": {
+            "type": "string"
+          },
+          "placeholder_medias_slugs": {
+            "type": "array"
+          }
+        }
+      }
+    },
+    "stopmotions": {
+      "path": "_stopmotions",
+      "fields": {
+        "date_created": {
+          "type": "date",
+          "default": "current",
+          "read_only": true
+        },
+        "date_modified": {
+          "type": "date",
+          "default": "current",
+          "override": true
+        },
+        "authors": {
+          "type": "array"
+        },
+        "linked_project": {
+          "type": "string",
+          "comment": "is_deprecated_and_replaced_with_linked_folder"
+        },
+        "linked_folder": {
+          "type": "string"
+        },
+        "linked_type": {
+          "type": "string"
+        }
+      },
+      "medias": {
+        "thumbs": {
+          "resolutions": [150, 1200]
+        },
+        "fields": {
+          "date_uploaded": {
+            "type": "date",
+            "default": "current",
+            "read_only": true
+          },
+          "media_filename": {
+            "type": "string"
+          },
+          "type": {
+            "type": "string",
+            "options": ["image"],
+            "default": "other"
+          },
+          "authors": {
+            "type": "array"
+          },
+          "file_meta": {
+            "type": "array",
+            "read_only": true
+          }
+        }
+      }
+    },
+    "chats": {
+      "path": "_chats",
+      "fields": {
+        "name": {
+          "type": "string"
+        },
+        "description": {
+          "type": "string"
+        },
+        "date_created": {
+          "type": "date",
+          "default": "current",
+          "read_only": true
+        },
+        "date_modified": {
+          "type": "date",
+          "default": "current",
+          "override": true
+        },
+        "authors": {
+          "type": "array"
+        },
+        "editing_limited_to": {
+          "type": "string",
+          "options": ["everybody", "only_authors", "nobody"],
+          "default": "everybody"
+        },
+        "viewing_limited_to": {
+          "type": "string",
+          "options": ["everybody", "only_authors", ""],
+          "default": "everybody"
+        },
+        "pinned": {
+          "type": "boolean"
+        },
+        "number_of_medias": {
+          "type": "number",
+          "only_admin_can_edit": true
+        }
+      },
+      "medias": {
+        "fields": {
+          "date_created": {
+            "type": "date",
+            "default": "current",
+            "read_only": true
+          },
+          "text": {
+            "type": "string"
+          },
+          "authors": {
+            "type": "array"
+          }
+        }
+      }
+    }
+  }
 }