diff --git a/src/models/src/ressource.ts b/src/models/src/ressource.ts
new file mode 100644
index 0000000..326d5a0
--- /dev/null
+++ b/src/models/src/ressource.ts
@@ -0,0 +1,101 @@
+import { DateString, ToJson, UUID } from '@/types.ts'
+import { regex } from '@/utils.ts'
+
+export class Ressource {
+	static fromJSON(
+		json: ToJson<Ressource>,
+	): Ressource {
+		return new Ressource({
+			name: json.name,
+			uuid: json.uuid,
+			createdAt: json.createdAt,
+			updatedAt: json.updatedAt,
+		})
+	}
+
+	static create({ name }: Pick<Ressource, 'name'>): Ressource {
+		const uuid = crypto.randomUUID() as UUID
+		const createdAt = new Date().toISOString() as DateString
+		const updatedAt = createdAt
+
+		return new Ressource({ name, uuid, createdAt, updatedAt })
+	}
+
+	#name: string
+	#uuid: UUID
+	#createdAt: DateString
+	#updatedAt: DateString
+
+	protected constructor(
+		{ name, uuid, createdAt, updatedAt }: Pick<
+			Ressource,
+			'name' | 'uuid' | 'createdAt' | 'updatedAt'
+		>,
+	) {
+		this.#name = name
+		if (!regex.uuidV4.test(uuid)) {
+			throw new SyntaxError(
+				`the following uuid "${uuid}" is not a valid UUID V4`,
+			)
+		}
+		this.#uuid = uuid
+		if (!regex.isoDateString.test(createdAt)) {
+			throw new SyntaxError(
+				`the following create date "${createdAt}" is not a valid UTC ISO string`,
+			)
+		}
+		this.#createdAt = createdAt
+		if (!regex.isoDateString.test(updatedAt)) {
+			throw new SyntaxError(
+				`the following update date "${updatedAt}" is not a valid UTC ISO string`,
+			)
+		}
+		this.#updatedAt = updatedAt
+	}
+
+	get type(): 'user' | 'machine' | 'service' | 'group' | 'credential' {
+		throw new Error('ressource super class has no type')
+	}
+	get uuid(): UUID {
+		return this.#uuid
+	}
+	get name(): string {
+		return this.#name
+	}
+	get createdAt(): DateString {
+		return this.#createdAt
+	}
+	get updatedAt(): DateString {
+		return this.#updatedAt
+	}
+
+	update(
+		props: Partial<Omit<Ressource, 'type' | 'uuid' | 'createdAt'>>,
+	): Ressource {
+		const updated = new Ressource({ ...this, ...props })
+		updated.#updatedAt = new Date().toISOString() as DateString
+		return updated
+	}
+
+	toJSON() {
+		return {
+			type: this.type,
+			uuid: this.uuid,
+			name: this.name,
+			createdAt: this.createdAt,
+			updatedAt: this.updatedAt,
+		} as const
+	}
+
+	toString(): string {
+		return `Ressource (${JSON.stringify(this)})`
+	}
+}
+
+export interface Ressource {
+	type: 'user' | 'machine' | 'service' | 'group' | 'credential'
+	uuid: UUID
+	name: string
+	createdAt: DateString
+	updatedAt: DateString
+}