diff --git a/apps/schema-server/schemas/metadata/1.15.json b/apps/schema-server/schemas/metadata/1.15.json
new file mode 100644
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+++ b/apps/schema-server/schemas/metadata/1.15.json
@@ -0,0 +1,256 @@
+{
+	"$schema": "http://json-schema.org/draft-07/schema",
+	"$id": "https://schemas.premid.app/metadata/1.15",
+	"title": "Metadata",
+	"type": "object",
+	"description": "Metadata that describes a activity.",
+	"definitions": {
+		"user": {
+			"type": "object",
+			"description": "User information.",
+			"properties": {
+				"name": {
+					"type": "string",
+					"description": "The name of the user."
+				},
+				"id": {
+					"type": "string",
+					"description": "The Discord snowflake of the user.",
+					"pattern": "^\\d+$"
+				}
+			},
+			"additionalProperties": false,
+			"required": [
+				"name",
+				"id"
+			]
+		}
+	},
+	"properties": {
+		"$schema": {
+			"$comment": "This is required otherwise the schema will fail itself when it is applied to a document via $schema. This is optional so that validators that use this schema don't fail if the metadata doesn't have the $schema property.",
+			"type": "string",
+			"description": "The metadata schema URL."
+		},
+		"author": {
+			"$ref": "#/definitions/user",
+			"description": "The author of this activity."
+		},
+		"contributors": {
+			"type": "array",
+			"description": "Any extra contributors to this activity.",
+			"items": {
+				"$ref": "#/definitions/user"
+			}
+		},
+		"service": {
+			"type": "string",
+			"description": "The service this activity is for."
+		},
+		"altnames": {
+			"type": "array",
+			"description": "Alternative names for the service.",
+			"items": {
+				"type": "string",
+				"description": "An alternative name."
+			},
+			"minItems": 1
+		},
+		"description": {
+			"type": "object",
+			"description": "A description of the activity in multiple languages.",
+			"propertyNames": {
+				"type": "string",
+				"description": "The language key. The key must be languagecode(-regioncode).",
+				"pattern": "^[a-z]{2,3}(?:-(?:[a-z]{2}|[0-9]{1,3}))?$"
+			},
+			"patternProperties": {
+				"^[a-z]{2,3}(?:-(?:[a-z]{2}|[0-9]{1,3}))?$": {
+					"type": "string",
+					"description": "The description of the activity in the key's language."
+				}
+			},
+			"additionalProperties": false,
+			"required": [
+				"en"
+			]
+		},
+		"url": {
+			"type": [
+				"string",
+				"array"
+			],
+			"description": "The service's website URL, or an array of URLs. Protocols should not be added.",
+			"pattern": "^(([a-z0-9-]+\\.)*[0-9a-z_-]+(\\.[a-z]+)+|(\\d{1,3}\\.){3}\\d{1,3}|localhost)$",
+			"items": {
+				"type": "string",
+				"description": "One of the service's website URLs.",
+				"pattern": "^(([a-z0-9-]+\\.)*[0-9a-z_-]+(\\.[a-z]+)+|(\\d{1,3}\\.){3}\\d{1,3}|localhost)$"
+			},
+			"minItems": 2
+		},
+		"version": {
+			"type": "string",
+			"description": "The SemVer version of the activity. Must just be major.minor.patch.",
+			"pattern": "^\\d+\\.\\d+\\.\\d+$"
+		},
+		"apiVersion": {
+			"type": "integer",
+			"description": "The Activity System version this activity supports.",
+			"minimum": 1,
+			"maximum": 2
+		},
+		"logo": {
+			"type": "string",
+			"description": "The logo of the service this activity is for.",
+			"pattern": "^https?://.+\\.(png|jpe?g|gif|webp)$"
+		},
+		"thumbnail": {
+			"type": "string",
+			"description": "A thumbnail of the service this activity is for.",
+			"pattern": "^https?://.+\\.(png|jpe?g|gif|webp)$"
+		},
+		"color": {
+			"type": "string",
+			"description": "The theme color of the service this activity is for. Must be either a 6 digit or a 3 digit hex code.",
+			"pattern": "^#([A-Fa-f0-9]{3}){1,2}$"
+		},
+		"tags": {
+			"type": [
+				"array"
+			],
+			"description": "The tags for the activity.",
+			"items": {
+				"type": "string",
+				"description": "A tag.",
+				"pattern": "^[^A-Z\\s!\"#$%&'()*+,./:;<=>?@\\[\\\\\\]^_`{|}~]+$"
+			},
+			"minItems": 1
+		},
+		"category": {
+			"type": "string",
+			"description": "The category the activity falls under.",
+			"enum": [
+				"anime",
+				"games",
+				"music",
+				"socials",
+				"videos",
+				"other"
+			]
+		},
+		"iframe": {
+			"type": "boolean",
+			"description": "Whether or not the activity should run in IFrames."
+		},
+		"readLogs": {
+			"type": "boolean",
+			"description": "Whether or not the extension should be reading logs."
+		},
+		"regExp": {
+			"type": "string",
+			"description": "A regular expression used to match URLs for the activity to inject into."
+		},
+		"iFrameRegExp": {
+			"type": "string",
+			"description": "A regular expression used to match IFrames for the activity to inject into."
+		},
+		"allowURLOverrides": {
+			"type": "boolean",
+			"description": "Whether or not the activity should allow URL overrides."
+		},
+		"settings": {
+			"type": "array",
+			"description": "An array of settings the user can change in the activity.",
+			"items": {
+				"type": "object",
+				"description": "A setting.",
+				"properties": {
+					"id": {
+						"type": "string",
+						"description": "The ID of the setting."
+					},
+					"title": {
+						"type": "string",
+						"description": "The title of the setting. Required only if `multiLanguage` is disabled."
+					},
+					"description": {
+						"type": "string",
+						"description": "The description of the setting. Only applicable if `multiLanguage` is disabled."
+					},
+					"icon": {
+						"type": "string",
+						"description": "The icon of the setting. Required only if `multiLanguage` is disabled.",
+						"pattern": "^fa([bsdrlt]|([-](brands|solid|duotone|regular|light|thin))) fa-[0-9a-z-]+$"
+					},
+					"if": {
+						"type": "object",
+						"description": "Restrict showing this setting if another setting is the defined value.",
+						"propertyNames": {
+							"type": "string",
+							"description": "The ID of the setting."
+						},
+						"patternProperties": {
+							"": {
+								"type": [
+									"string",
+									"number",
+									"boolean"
+								],
+								"description": "The value of the setting."
+							}
+						},
+						"additionalProperties": false
+					},
+					"placeholder": {
+						"type": "string",
+						"description": "The placeholder for settings that require input. Shown when the input is empty."
+					},
+					"value": {
+						"type": [
+							"string",
+							"number",
+							"boolean"
+						],
+						"description": "The default value of the setting. Not compatible with `values`."
+					},
+					"values": {
+						"type": "array",
+						"description": "The default values of the setting. Not compatible with `value`.",
+						"items": {
+							"type": [
+								"string",
+								"number",
+								"boolean"
+							],
+							"description": "The value of the setting."
+						}
+					},
+					"multiLanguage": {
+						"type": "boolean",
+						"description": "When true, strings from the `general.json` file are available for use, plus the <service>.json file. False is not allowed."
+					}
+				},
+				"additionalProperties": false
+			}
+		},
+		"mobile": {
+			"type": "boolean",
+			"description": "Whether or not the activity has support for mobile devices."
+		}
+	},
+	"additionalProperties": false,
+	"required": [
+		"author",
+		"service",
+		"description",
+		"url",
+		"version",
+		"apiVersion",
+		"logo",
+		"thumbnail",
+		"color",
+		"tags",
+		"category"
+	]
+}