diff --git a/rust/share/device.storage.schema.json b/rust/share/device.storage.schema.json
new file mode 100644
index 0000000000..39ebbfcee6
--- /dev/null
+++ b/rust/share/device.storage.schema.json
@@ -0,0 +1,206 @@
+{
+  "$schema": "https://json-schema.org/draft/2019-09/schema",
+  "$id": "https://github.com/openSUSE/agama/blob/master/rust/share/device.storage.schema.json",
+  "title": "Storage device",
+  "description": "Schema to describe a device both in 'system' and 'proposal'.",
+  "type": "object",
+  "additionalProperties": false,
+  "required": ["sid", "name"],
+  "properties": {
+    "sid": { "type": "integer" },
+    "name": { "type": "string" },
+    "description": { "type": "string" },
+    "block": { "$ref": "#/$defs/block" },
+    "drive": { "$ref": "#/$defs/drive" },
+    "filesystem": { "$ref": "#/$defs/filesystem" },
+    "md": { "$ref": "#/$defs/md" },
+    "multipath": { "$ref": "#/$defs/multipath" },
+    "partitionTable": { "$ref": "#/$defs/partitionTable" },
+    "partition": { "$ref": "#/$defs/partition" },
+    "partitions": {
+      "type": "array",
+      "items": { "$ref": "#" }
+    },
+    "volumeGroup": { "$ref": "#/$defs/volumeGroup" },
+    "logicalVolumes": {
+      "type": "array",
+      "items": { "$ref": "#" }
+    }
+  },
+  "$defs": {
+    "block": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": ["start", "size", "shrinking"],
+      "properties": {
+        "start": { "type": "integer" },
+        "size": { "type": "integer" },
+        "active": { "type": "boolean" },
+        "encrypted": { "type": "boolean" },
+        "udevIds": {
+          "type": "array",
+          "items": { "type": "string" }
+        },
+        "udevPaths": {
+          "type": "array",
+          "items": { "type": "string" }
+        },
+        "systems": {
+          "type": "array",
+          "items": { "type": "string" }
+        },
+        "shrinking": {
+          "anyOf": [
+            { "$ref": "#/$defs/shrinkingSupported" },
+            { "$ref": "#/$defs/shrinkingUnsupported" }
+          ]
+        }
+      }
+    },
+    "shrinkingSupported": {
+      "type": "object",
+      "additionalProperties": false,
+      "properties": {
+        "supported": { "type": "integer" }
+      }
+    },
+    "shrinkingUnsupported": {
+      "type": "object",
+      "additionalProperties": false,
+      "properties": {
+        "unsupported": {
+          "type": "array",
+          "items": { "type": "string" }
+        }
+      }
+    },
+    "drive": {
+      "type": "object",
+      "additionalProperties": false,
+      "properties": {
+        "type": { "enum": ["disk", "raid", "multipath", "dasd"] },
+        "vendor": { "type": "string" },
+        "model": { "type": "string" },
+        "transport": { "type": "string" },
+        "bus": { "type": "string" },
+        "busId": { "type": "string" },
+        "driver": {
+          "type": "array",
+          "items": { "type": "string" }
+        },
+        "info": { "$ref": "#/$defs/driveInfo" }
+      }
+    },
+    "driveInfo": {
+      "type": "object",
+      "additionalProperties": false,
+      "properties": {
+        "sdCard": { "type": "boolean" },
+        "dellBoss": { "type": "boolean" }
+      }
+    },
+    "filesystem": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": ["sid", "type"],
+      "properties": {
+        "sid": { "type": "integer" },
+        "type": { "$ref": "#/$defs/filesystemType" },
+        "mountPath": { "type": "string" },
+        "label": { "type": "string" }
+      }
+    },
+    "filesystemType": {
+      "enum": [
+        "bcachefs",
+        "btrfs",
+        "exfat",
+        "ext2",
+        "ext3",
+        "ext4",
+        "f2fs",
+        "jfs",
+        "nfs",
+        "nilfs2",
+        "ntfs",
+        "reiserfs",
+        "swap",
+        "tmpfs",
+        "vfat",
+        "xfs"
+      ]
+    },
+    "md": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": ["level", "devices"],
+      "properties": {
+        "level": { "$ref": "#/$defs/mdRaidLevel" },
+        "devices": {
+          "type": "array",
+          "items": { "type": "integer" }
+        },
+        "uuid": { "type": "string" }
+      }
+    },
+    "mdRaidLevel": {
+      "title": "MD level",
+      "enum": [
+        "raid0",
+        "raid1",
+        "raid5",
+        "raid6",
+        "raid10"
+      ]
+    },
+    "multipath": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": ["wireNames"],
+      "properties": {
+        "wireNames": {
+          "type": "array",
+          "items": { "type": "string" }
+        }
+      }
+    },
+    "partitionTable": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": ["type", "unusedSlots"],
+      "properties": {
+        "type": { "$ref": "#/$defs/ptableType" },
+        "unusedSlots": {
+          "type": "array",
+          "items": {
+            "type": "array",
+            "items": { "type": "integer" }
+          }
+        }
+      }
+    },
+    "ptableType": {
+      "enum": ["gpt", "msdos", "dasd"]
+    },
+    "partition": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": ["efi"],
+      "properties": {
+        "efi": { "type": "boolean" }
+      }
+    },
+    "volumeGroup": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": ["size", "physicalVolumes"],
+      "properties": {
+        "size": { "type": "integer" },
+        "physicalVolumes": {
+          "type": "array",
+          "items": { "type": "integer" }
+        }
+      }
+    }
+  }
+}
diff --git a/rust/share/proposal.storage.schema.json b/rust/share/proposal.storage.schema.json
new file mode 100644
index 0000000000..876c9c0ea6
--- /dev/null
+++ b/rust/share/proposal.storage.schema.json
@@ -0,0 +1,34 @@
+{
+  "$schema": "https://json-schema.org/draft/2019-09/schema",
+  "$id": "https://github.com/openSUSE/agama/blob/master/rust/share/proposal.storage.schema.json",
+  "title": "Proposal",
+  "description": "API description of the storage proposal.",
+  "type": "object",
+  "additionalProperties": false,
+  "properties": {
+    "devices": {
+      "description": "Expected layout of the system after the commit phase.",
+      "type": "array",
+      "items": { "$ref": "device.storage.schema.json" }
+    },
+    "actions": {
+      "description": "Sorted list of actions to execute during the commit phase.",
+      "type": "array",
+      "items": { "$ref": "#/$defs/action" }
+    }
+  },
+  "$defs": {
+    "action": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": ["device", "text"],
+      "properties": {
+        "device": { "type": "integer" },
+        "text": { "type": "string" },
+        "subvol": { "type": "boolean" },
+        "delete": { "type": "boolean" },
+        "resize": { "type": "boolean" }
+      }
+    }
+  }
+}
diff --git a/rust/share/system.storage.schema.json b/rust/share/system.storage.schema.json
new file mode 100644
index 0000000000..96020738f2
--- /dev/null
+++ b/rust/share/system.storage.schema.json
@@ -0,0 +1,107 @@
+{
+  "$schema": "https://json-schema.org/draft/2019-09/schema",
+  "$id": "https://github.com/openSUSE/agama/blob/master/rust/share/system.storage.schema.json",
+  "title": "System",
+  "description": "API description of the system",
+  "type": "object",
+  "additionalProperties": false,
+  "properties": {
+    "devices": {
+      "description": "All relevant devices on the system",
+      "type": "array",
+      "items": { "$ref": "device.storage.schema.json" }
+    },
+    "availableDrives": {
+      "description": "SIDs of the available drives",
+      "type": "array",
+      "items": { "type": "integer" }
+    },
+    "availableMdRaids": {
+      "description": "SIDs of the available MD RAIDs",
+      "type": "array",
+      "items": { "type": "integer" }
+    },
+    "candidateDrives": {
+      "description": "SIDs of the drives that are candidate for installation",
+      "type": "array",
+      "items": { "type": "integer" }
+    },
+    "candidateMdRaids": {
+      "description": "SIDs of the MD RAIDs that are candidate for installation",
+      "type": "array",
+      "items": { "type": "integer" }
+    },
+    "productMountPoints": {
+      "description": "Meaningful mount points for the current product",
+      "type": "array",
+      "items": { "type": "string" }
+    },
+    "encryptionMethods": {
+      "description": "Possible encryption methods for the current system and product",
+      "type": "array",
+      "items": { "type": "string" }
+    },
+    "volumeTemplates": {
+      "description": "Volumes defined by the product as templates",
+      "type": "array",
+      "items": { "$ref": "#/$defs/volume" }
+    },
+    "issues": {
+      "type": "array",
+      "items": { "$ref": "#/$defs/issue" }
+    }
+  },
+  "$defs": {
+    "volume": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": ["mountPath", "minSize", "autoSize"],
+      "properties": {
+        "mountPath": { "type": "string" },
+        "mountOptions": {
+          "type": "array",
+          "items": { "type": "string" }
+        },
+        "fsType": { "$ref": "device.storage.schema.json#/$defs/filesystemType" },
+        "autoSize": { "type": "boolean" },
+        "minSize": { "type": "integer" },
+        "maxSize": { "type": "integer" },
+        "snapshots": { "type": "boolean" },
+        "transactional": { "type": "boolean" },
+        "outline": { "$ref": "#/$defs/volumeOutline" }
+      }
+    },
+    "volumeOutline": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": ["required", "supportAutoSize"],
+      "properties": {
+        "required": { "type": "boolean" },
+        "supportAutoSize": { "type": "boolean" },
+        "fsTypes": {
+          "type": "array",
+          "items": { "$ref": "device.storage.schema.json#/$defs/filesystemType" }
+        },
+        "adjustByRam": { "type": "boolean" },
+        "snapshotsConfigurable": { "type": "boolean" },
+        "snapshotsAffectSizes": { "type": "boolean" },
+        "sizeRelevantVolumes": {
+          "type": "array",
+          "items": { "type": "string" }
+        }
+      }
+    },
+    "issue": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": ["description"],
+      "properties": {
+        "description": { "type": "string" },
+        "class": { "type": "string" },
+        "details": { "type": "string" },
+        "source": { "enum": ["config", "system"] },
+        "severity": { "enum": ["warn", "error"] }
+      }
+    }
+  }
+}
diff --git a/web/src/api/storage/proposal.ts b/web/src/api/storage/proposal.ts
new file mode 100644
index 0000000000..0973d1931d
--- /dev/null
+++ b/web/src/api/storage/proposal.ts
@@ -0,0 +1,118 @@
+/* eslint-disable */
+/**
+ * This file was automatically generated by json-schema-to-typescript.
+ * DO NOT MODIFY IT BY HAND. Instead, modify the source JSONSchema file,
+ * and run json-schema-to-typescript to regenerate this file.
+ */
+
+export type MDLevel = "raid0" | "raid1" | "raid5" | "raid6" | "raid10";
+
+/**
+ * API description of the storage proposal.
+ */
+export interface Proposal {
+  /**
+   * Expected layout of the system after the commit phase.
+   */
+  devices?: StorageDevice[];
+  /**
+   * Sorted list of actions to execute during the commit phase.
+   */
+  actions?: Action[];
+}
+/**
+ * Schema to describe a device both in 'system' and 'proposal'.
+ */
+export interface StorageDevice {
+  sid: number;
+  name: string;
+  description?: string;
+  block?: Block;
+  drive?: Drive;
+  filesystem?: Filesystem;
+  md?: Md;
+  multipath?: Multipath;
+  partitionTable?: PartitionTable;
+  partition?: Partition;
+  partitions?: StorageDevice[];
+  volumeGroup?: VolumeGroup;
+  logicalVolumes?: StorageDevice[];
+}
+export interface Block {
+  start: number;
+  size: number;
+  active?: boolean;
+  encrypted?: boolean;
+  udevIds?: string[];
+  udevPaths?: string[];
+  systems?: string[];
+  shrinking: ShrinkingSupported | ShrinkingUnsupported;
+}
+export interface ShrinkingSupported {
+  supported?: number;
+}
+export interface ShrinkingUnsupported {
+  unsupported?: string[];
+}
+export interface Drive {
+  type?: "disk" | "raid" | "multipath" | "dasd";
+  vendor?: string;
+  model?: string;
+  transport?: string;
+  bus?: string;
+  busId?: string;
+  driver?: string[];
+  info?: DriveInfo;
+}
+export interface DriveInfo {
+  sdCard?: boolean;
+  dellBoss?: boolean;
+}
+export interface Filesystem {
+  sid: number;
+  type:
+    | "bcachefs"
+    | "btrfs"
+    | "exfat"
+    | "ext2"
+    | "ext3"
+    | "ext4"
+    | "f2fs"
+    | "jfs"
+    | "nfs"
+    | "nilfs2"
+    | "ntfs"
+    | "reiserfs"
+    | "swap"
+    | "tmpfs"
+    | "vfat"
+    | "xfs";
+  mountPath?: string;
+  label?: string;
+}
+export interface Md {
+  level: MDLevel;
+  devices: number[];
+  uuid?: string;
+}
+export interface Multipath {
+  wireNames: string[];
+}
+export interface PartitionTable {
+  type: "gpt" | "msdos" | "dasd";
+  unusedSlots: number[][];
+}
+export interface Partition {
+  efi: boolean;
+}
+export interface VolumeGroup {
+  size: number;
+  physicalVolumes: number[];
+}
+export interface Action {
+  device: number;
+  text: string;
+  subvol?: boolean;
+  delete?: boolean;
+  resize?: boolean;
+}
diff --git a/web/src/api/storage/system.ts b/web/src/api/storage/system.ts
new file mode 100644
index 0000000000..f219eac34c
--- /dev/null
+++ b/web/src/api/storage/system.ts
@@ -0,0 +1,196 @@
+/* eslint-disable */
+/**
+ * This file was automatically generated by json-schema-to-typescript.
+ * DO NOT MODIFY IT BY HAND. Instead, modify the source JSONSchema file,
+ * and run json-schema-to-typescript to regenerate this file.
+ */
+
+export type MDLevel = "raid0" | "raid1" | "raid5" | "raid6" | "raid10";
+
+/**
+ * API description of the system
+ */
+export interface System {
+  /**
+   * All relevant devices on the system
+   */
+  devices?: StorageDevice[];
+  /**
+   * SIDs of the available drives
+   */
+  availableDrives?: number[];
+  /**
+   * SIDs of the available MD RAIDs
+   */
+  availableMdRaids?: number[];
+  /**
+   * SIDs of the drives that are candidate for installation
+   */
+  candidateDrives?: number[];
+  /**
+   * SIDs of the MD RAIDs that are candidate for installation
+   */
+  candidateMdRaids?: number[];
+  /**
+   * Meaningful mount points for the current product
+   */
+  productMountPoints?: string[];
+  /**
+   * Possible encryption methods for the current system and product
+   */
+  encryptionMethods?: string[];
+  /**
+   * Volumes defined by the product as templates
+   */
+  volumeTemplates?: Volume[];
+  issues?: Issue[];
+}
+/**
+ * Schema to describe a device both in 'system' and 'proposal'.
+ */
+export interface StorageDevice {
+  sid: number;
+  name: string;
+  description?: string;
+  block?: Block;
+  drive?: Drive;
+  filesystem?: Filesystem;
+  md?: Md;
+  multipath?: Multipath;
+  partitionTable?: PartitionTable;
+  partition?: Partition;
+  partitions?: StorageDevice[];
+  volumeGroup?: VolumeGroup;
+  logicalVolumes?: StorageDevice[];
+}
+export interface Block {
+  start: number;
+  size: number;
+  active?: boolean;
+  encrypted?: boolean;
+  udevIds?: string[];
+  udevPaths?: string[];
+  systems?: string[];
+  shrinking: ShrinkingSupported | ShrinkingUnsupported;
+}
+export interface ShrinkingSupported {
+  supported?: number;
+}
+export interface ShrinkingUnsupported {
+  unsupported?: string[];
+}
+export interface Drive {
+  type?: "disk" | "raid" | "multipath" | "dasd";
+  vendor?: string;
+  model?: string;
+  transport?: string;
+  bus?: string;
+  busId?: string;
+  driver?: string[];
+  info?: DriveInfo;
+}
+export interface DriveInfo {
+  sdCard?: boolean;
+  dellBoss?: boolean;
+}
+export interface Filesystem {
+  sid: number;
+  type:
+    | "bcachefs"
+    | "btrfs"
+    | "exfat"
+    | "ext2"
+    | "ext3"
+    | "ext4"
+    | "f2fs"
+    | "jfs"
+    | "nfs"
+    | "nilfs2"
+    | "ntfs"
+    | "reiserfs"
+    | "swap"
+    | "tmpfs"
+    | "vfat"
+    | "xfs";
+  mountPath?: string;
+  label?: string;
+}
+export interface Md {
+  level: MDLevel;
+  devices: number[];
+  uuid?: string;
+}
+export interface Multipath {
+  wireNames: string[];
+}
+export interface PartitionTable {
+  type: "gpt" | "msdos" | "dasd";
+  unusedSlots: number[][];
+}
+export interface Partition {
+  efi: boolean;
+}
+export interface VolumeGroup {
+  size: number;
+  physicalVolumes: number[];
+}
+export interface Volume {
+  mountPath: string;
+  mountOptions?: string[];
+  fsType?:
+    | "bcachefs"
+    | "btrfs"
+    | "exfat"
+    | "ext2"
+    | "ext3"
+    | "ext4"
+    | "f2fs"
+    | "jfs"
+    | "nfs"
+    | "nilfs2"
+    | "ntfs"
+    | "reiserfs"
+    | "swap"
+    | "tmpfs"
+    | "vfat"
+    | "xfs";
+  autoSize: boolean;
+  minSize: number;
+  maxSize?: number;
+  snapshots?: boolean;
+  transactional?: boolean;
+  outline?: VolumeOutline;
+}
+export interface VolumeOutline {
+  required: boolean;
+  supportAutoSize: boolean;
+  fsTypes?: (
+    | "bcachefs"
+    | "btrfs"
+    | "exfat"
+    | "ext2"
+    | "ext3"
+    | "ext4"
+    | "f2fs"
+    | "jfs"
+    | "nfs"
+    | "nilfs2"
+    | "ntfs"
+    | "reiserfs"
+    | "swap"
+    | "tmpfs"
+    | "vfat"
+    | "xfs"
+  )[];
+  adjustByRam?: boolean;
+  snapshotsConfigurable?: boolean;
+  snapshotsAffectSizes?: boolean;
+  sizeRelevantVolumes?: string[];
+}
+export interface Issue {
+  description: string;
+  class?: string;
+  details?: string;
+  source?: "config" | "system";
+  severity?: "warn" | "error";
+}