diff --git a/src/lib/openapi/index.ts b/src/lib/openapi/index.ts
index 4c1503e74c..3084503d78 100644
--- a/src/lib/openapi/index.ts
+++ b/src/lib/openapi/index.ts
@@ -52,6 +52,11 @@ import { versionSchema } from './spec/version-schema';
 import { applicationSchema } from './spec/application-schema';
 import { applicationsSchema } from './spec/applications-schema';
 import { tagWithVersionSchema } from './spec/tag-with-version-schema';
+import { featureStrategySegmentSchema } from './spec/feature-strategy-segment-schema';
+import { segmentSchema } from './spec/segment-schema';
+import { stateSchema } from './spec/state-schema';
+import { featureTagSchema } from './spec/feature-tag-schema';
+import { exportParametersSchema } from './spec/export-parameters-schema';
 
 // All schemas in `openapi/spec` should be listed here.
 export const schemas = {
@@ -68,9 +73,12 @@ export const schemas = {
     createStrategySchema,
     environmentSchema,
     environmentsSchema,
+    exportParametersSchema,
     featureEnvironmentSchema,
     featureSchema,
     featureStrategySchema,
+    featureStrategySegmentSchema,
+    featureTagSchema,
     featureTypeSchema,
     featureTypesSchema,
     featureVariantsSchema,
@@ -88,8 +96,10 @@ export const schemas = {
     projectEnvironmentSchema,
     projectSchema,
     projectsSchema,
+    segmentSchema,
     sortOrderSchema,
     splashSchema,
+    stateSchema,
     strategySchema,
     tagSchema,
     tagWithVersionSchema,
diff --git a/src/lib/openapi/spec/export-parameters-schema.ts b/src/lib/openapi/spec/export-parameters-schema.ts
new file mode 100644
index 0000000000..0dceaada20
--- /dev/null
+++ b/src/lib/openapi/spec/export-parameters-schema.ts
@@ -0,0 +1,32 @@
+import { FromSchema } from 'json-schema-to-ts';
+
+export const exportParametersSchema = {
+    $id: '#/components/schemas/exportParametersSchema',
+    type: 'object',
+    properties: {
+        format: {
+            type: 'string',
+        },
+        download: {
+            type: 'boolean',
+        },
+        strategies: {
+            type: 'boolean',
+        },
+        featureToggles: {
+            type: 'boolean',
+        },
+        projects: {
+            type: 'boolean',
+        },
+        tags: {
+            type: 'boolean',
+        },
+        environments: {
+            type: 'boolean',
+        },
+    },
+    components: {},
+} as const;
+
+export type ExportParametersSchema = FromSchema<typeof exportParametersSchema>;
diff --git a/src/lib/openapi/spec/feature-strategy-segment-schema.ts b/src/lib/openapi/spec/feature-strategy-segment-schema.ts
new file mode 100644
index 0000000000..ae473c1a0f
--- /dev/null
+++ b/src/lib/openapi/spec/feature-strategy-segment-schema.ts
@@ -0,0 +1,21 @@
+import { FromSchema } from 'json-schema-to-ts';
+
+export const featureStrategySegmentSchema = {
+    $id: '#/components/schemas/featureStrategySegmentSchema',
+    type: 'object',
+    additionalProperties: false,
+    required: ['segmentId', 'featureStrategyId'],
+    properties: {
+        segmentId: {
+            type: 'integer',
+        },
+        featureStrategyId: {
+            type: 'string',
+        },
+    },
+    components: {},
+} as const;
+
+export type FeatureStrategySegmentSchema = FromSchema<
+    typeof featureStrategySegmentSchema
+>;
diff --git a/src/lib/openapi/spec/feature-tag-schema.ts b/src/lib/openapi/spec/feature-tag-schema.ts
new file mode 100644
index 0000000000..1b4e0f924b
--- /dev/null
+++ b/src/lib/openapi/spec/feature-tag-schema.ts
@@ -0,0 +1,28 @@
+import { FromSchema } from 'json-schema-to-ts';
+
+export const featureTagSchema = {
+    $id: '#/components/schemas/featureTagSchema',
+    type: 'object',
+    additionalProperties: false,
+    required: ['featureName', 'tagValue'],
+    properties: {
+        featureName: {
+            type: 'string',
+        },
+        tagType: {
+            type: 'string',
+        },
+        tagValue: {
+            type: 'string',
+        },
+        type: {
+            type: 'string',
+        },
+        value: {
+            type: 'string',
+        },
+    },
+    components: {},
+} as const;
+
+export type FeatureTagSchema = FromSchema<typeof featureTagSchema>;
diff --git a/src/lib/openapi/spec/segment-schema.ts b/src/lib/openapi/spec/segment-schema.ts
new file mode 100644
index 0000000000..98311e1131
--- /dev/null
+++ b/src/lib/openapi/spec/segment-schema.ts
@@ -0,0 +1,30 @@
+import { FromSchema } from 'json-schema-to-ts';
+import { constraintSchema } from './constraint-schema';
+
+export const segmentSchema = {
+    $id: '#/components/schemas/segmentSchema',
+    type: 'object',
+    additionalProperties: false,
+    required: ['name', 'constraints'],
+    properties: {
+        name: {
+            type: 'string',
+        },
+        description: {
+            type: 'string',
+        },
+        constraints: {
+            type: 'array',
+            items: {
+                $ref: '#/components/schemas/constraintSchema',
+            },
+        },
+    },
+    components: {
+        schemas: {
+            constraintSchema,
+        },
+    },
+} as const;
+
+export type SegmentSchema = FromSchema<typeof segmentSchema>;
diff --git a/src/lib/openapi/spec/state-schema.ts b/src/lib/openapi/spec/state-schema.ts
new file mode 100644
index 0000000000..5292271be9
--- /dev/null
+++ b/src/lib/openapi/spec/state-schema.ts
@@ -0,0 +1,107 @@
+import { FromSchema } from 'json-schema-to-ts';
+import { featureSchema } from './feature-schema';
+import { strategySchema } from './strategy-schema';
+import { tagSchema } from './tag-schema';
+import { tagTypeSchema } from './tag-type-schema';
+import { featureTagSchema } from './feature-tag-schema';
+import { projectSchema } from './project-schema';
+import { featureStrategySchema } from './feature-strategy-schema';
+import { featureEnvironmentSchema } from './feature-environment-schema';
+import { environmentSchema } from './environment-schema';
+import { segmentSchema } from './segment-schema';
+import { featureStrategySegmentSchema } from './feature-strategy-segment-schema';
+
+export const stateSchema = {
+    $id: '#/components/schemas/stateSchema',
+    type: 'object',
+    additionalProperties: true,
+    required: ['version'],
+    properties: {
+        version: {
+            type: 'integer',
+        },
+        features: {
+            type: 'array',
+            items: {
+                $ref: '#/components/schemas/featureSchema',
+            },
+        },
+        strategies: {
+            type: 'array',
+            items: {
+                $ref: '#/components/schemas/strategySchema',
+            },
+        },
+        tags: {
+            type: 'array',
+            items: {
+                $ref: '#/components/schemas/tagSchema',
+            },
+        },
+        tagTypes: {
+            type: 'array',
+            items: {
+                $ref: '#/components/schemas/tagTypeSchema',
+            },
+        },
+        featureTags: {
+            type: 'array',
+            items: {
+                $ref: '#/components/schemas/featureTagSchema',
+            },
+        },
+        projects: {
+            type: 'array',
+            items: {
+                $ref: '#/components/schemas/projectSchema',
+            },
+        },
+        featureStrategies: {
+            type: 'array',
+            items: {
+                $ref: '#/components/schemas/featureStrategySchema',
+            },
+        },
+        featureEnvironments: {
+            type: 'array',
+            items: {
+                $ref: '#/components/schemas/featureEnvironmentSchema',
+            },
+        },
+        environments: {
+            type: 'array',
+            items: {
+                $ref: '#/components/schemas/environmentSchema',
+            },
+        },
+        segments: {
+            type: 'array',
+            items: {
+                $ref: '#/components/schemas/segmentSchema',
+            },
+        },
+        featureStrategySegments: {
+            type: 'array',
+            items: {
+                $ref: '#/components/schemas/featureStrategySegmentSchema',
+            },
+        },
+    },
+    components: {
+        schemas: {
+            featureSchema,
+            strategySchema,
+            tagSchema,
+            tagTypeSchema,
+            featureTagSchema,
+            projectSchema,
+            featureStrategySchema,
+            featureEnvironmentSchema,
+            environmentSchema,
+            segmentSchema,
+            featureStrategySegmentSchema,
+        },
+    },
+} as const;
+
+export type StateSchema = FromSchema<typeof stateSchema>;
diff --git a/src/lib/routes/admin-api/state.ts b/src/lib/routes/admin-api/state.ts
index 27dcd804f4..36b264f95a 100644
--- a/src/lib/routes/admin-api/state.ts
+++ b/src/lib/routes/admin-api/state.ts
@@ -11,6 +11,10 @@ import { IUnleashServices } from '../../types/services';
 import { Logger } from '../../logger';
 import StateService from '../../services/state-service';
 import { IAuthRequest } from '../unleash-types';
+import { OpenApiService } from '../../services/openapi-service';
+import { createRequestSchema, createResponseSchema } from '../../openapi';
+import { emptyResponse } from '../../openapi/spec/empty-response';
+import { ExportParametersSchema } from '../../openapi/spec/export-parameters-schema';
 
 const upload = multer({ limits: { fileSize: 5242880 } });
 const paramToBool = (param, def) => {
@@ -28,16 +32,56 @@ class StateController extends Controller {
 
     private stateService: StateService;
 
+    private openApiService: OpenApiService;
+
     constructor(
         config: IUnleashConfig,
-        { stateService }: Pick<IUnleashServices, 'stateService'>,
+        {
+            stateService,
+            openApiService,
+        }: Pick<IUnleashServices, 'stateService' | 'openApiService'>,
     ) {
         super(config);
         this.logger = config.getLogger('/admin-api/state.ts');
         this.stateService = stateService;
+        this.openApiService = openApiService;
         this.fileupload('/import', upload.single('file'), this.import, ADMIN);
-        this.post('/import', this.import, ADMIN);
-        this.get('/export', this.export, ADMIN);
+        this.route({
+            method: 'post',
+            path: '/import',
+            permission: ADMIN,
+            handler: this.import,
+            middleware: [
+                this.openApiService.validPath({
+                    tags: ['admin'],
+                    operationId: 'import',
+                    responses: {
+                        202: emptyResponse,
+                    },
+                    requestBody: createRequestSchema('stateSchema'),
+                }),
+            ],
+        });
+        this.route({
+            method: 'get',
+            path: '/export',
+            permission: ADMIN,
+            handler: this.export,
+            middleware: [
+                this.openApiService.validPath({
+                    tags: ['admin'],
+                    operationId: 'export',
+                    responses: {
+                        200: createResponseSchema('stateSchema'),
+                    },
+                    parameters: [
+                        {
+                            $ref: '#/components/schema/exportParametersSchema',
+                        },
+                    ],
+                }),
+            ],
+        });
     }
 
     async import(req: IAuthRequest, res: Response): Promise<void> {
@@ -68,7 +112,10 @@ class StateController extends Controller {
         res.sendStatus(202);
     }
 
-    async export(req: Request, res: Response): Promise<void> {
+    async export(
+        req: Request<unknown, unknown, unknown, ExportParametersSchema>,
+        res: Response,
+    ): Promise<void> {
         const { format } = req.query;
 
         const downloadFile = paramToBool(req.query.download, false);
diff --git a/src/test/e2e/api/openapi/__snapshots__/openapi.e2e.test.ts.snap b/src/test/e2e/api/openapi/__snapshots__/openapi.e2e.test.ts.snap
index 9c6dd8f606..906abc5dbb 100644
--- a/src/test/e2e/api/openapi/__snapshots__/openapi.e2e.test.ts.snap
+++ b/src/test/e2e/api/openapi/__snapshots__/openapi.e2e.test.ts.snap
@@ -384,6 +384,32 @@ Object {
         ],
         "type": "object",
       },
+      "exportParametersSchema": Object {
+        "properties": Object {
+          "download": Object {
+            "type": "boolean",
+          },
+          "environments": Object {
+            "type": "boolean",
+          },
+          "featureToggles": Object {
+            "type": "boolean",
+          },
+          "format": Object {
+            "type": "string",
+          },
+          "projects": Object {
+            "type": "boolean",
+          },
+          "strategies": Object {
+            "type": "boolean",
+          },
+          "tags": Object {
+            "type": "boolean",
+          },
+        },
+        "type": "object",
+      },
       "featureEnvironmentSchema": Object {
         "additionalProperties": false,
         "properties": Object {
@@ -522,6 +548,47 @@ Object {
         ],
         "type": "object",
       },
+      "featureStrategySegmentSchema": Object {
+        "additionalProperties": false,
+        "properties": Object {
+          "featureStrategyId": Object {
+            "type": "string",
+          },
+          "segmentId": Object {
+            "type": "integer",
+          },
+        },
+        "required": Array [
+          "segmentId",
+          "featureStrategyId",
+        ],
+        "type": "object",
+      },
+      "featureTagSchema": Object {
+        "additionalProperties": false,
+        "properties": Object {
+          "featureName": Object {
+            "type": "string",
+          },
+          "tagType": Object {
+            "type": "string",
+          },
+          "tagValue": Object {
+            "type": "string",
+          },
+          "type": Object {
+            "type": "string",
+          },
+          "value": Object {
+            "type": "string",
+          },
+        },
+        "required": Array [
+          "featureName",
+          "tagValue",
+        ],
+        "type": "object",
+      },
       "featureTypeSchema": Object {
         "additionalProperties": false,
         "properties": Object {
@@ -889,6 +956,28 @@ Object {
         ],
         "type": "object",
       },
+      "segmentSchema": Object {
+        "additionalProperties": false,
+        "properties": Object {
+          "constraints": Object {
+            "items": Object {
+              "$ref": "#/components/schemas/constraintSchema",
+            },
+            "type": "array",
+          },
+          "description": Object {
+            "type": "string",
+          },
+          "name": Object {
+            "type": "string",
+          },
+        },
+        "required": Array [
+          "name",
+          "constraints",
+        ],
+        "type": "object",
+      },
       "sortOrderSchema": Object {
         "additionalProperties": Object {
           "type": "number",
@@ -915,6 +1004,84 @@ Object {
         ],
         "type": "object",
       },
+      "stateSchema": Object {
+        "additionalProperties": true,
+        "properties": Object {
+          "environments": Object {
+            "items": Object {
+              "$ref": "#/components/schemas/environmentSchema",
+            },
+            "type": "array",
+          },
+          "featureEnvironments": Object {
+            "items": Object {
+              "$ref": "#/components/schemas/featureEnvironmentSchema",
+            },
+            "type": "array",
+          },
+          "featureStrategies": Object {
+            "items": Object {
+              "$ref": "#/components/schemas/featureStrategySchema",
+            },
+            "type": "array",
+          },
+          "featureStrategySegments": Object {
+            "items": Object {
+              "$ref": "#/components/schemas/featureStrategySegmentSchema",
+            },
+            "type": "array",
+          },
+          "featureTags": Object {
+            "items": Object {
+              "$ref": "#/components/schemas/featureTagSchema",
+            },
+            "type": "array",
+          },
+          "features": Object {
+            "items": Object {
+              "$ref": "#/components/schemas/featureSchema",
+            },
+            "type": "array",
+          },
+          "projects": Object {
+            "items": Object {
+              "$ref": "#/components/schemas/projectSchema",
+            },
+            "type": "array",
+          },
+          "segments": Object {
+            "items": Object {
+              "$ref": "#/components/schemas/segmentSchema",
+            },
+            "type": "array",
+          },
+          "strategies": Object {
+            "items": Object {
+              "$ref": "#/components/schemas/strategySchema",
+            },
+            "type": "array",
+          },
+          "tagTypes": Object {
+            "items": Object {
+              "$ref": "#/components/schemas/tagTypeSchema",
+            },
+            "type": "array",
+          },
+          "tags": Object {
+            "items": Object {
+              "$ref": "#/components/schemas/tagSchema",
+            },
+            "type": "array",
+          },
+          "version": Object {
+            "type": "integer",
+          },
+        },
+        "required": Array [
+          "version",
+        ],
+        "type": "object",
+      },
       "strategySchema": Object {
         "additionalProperties": false,
         "properties": Object {
@@ -3208,6 +3375,55 @@ Object {
         ],
       },
     },
+    "/api/admin/state/export": Object {
+      "get": Object {
+        "operationId": "export",
+        "parameters": Array [
+          Object {
+            "$ref": "#/components/schema/exportParametersSchema",
+          },
+        ],
+        "responses": Object {
+          "200": Object {
+            "content": Object {
+              "application/json": Object {
+                "schema": Object {
+                  "$ref": "#/components/schemas/stateSchema",
+                },
+              },
+            },
+            "description": "stateSchema",
+          },
+        },
+        "tags": Array [
+          "admin",
+        ],
+      },
+    },
+    "/api/admin/state/import": Object {
+      "post": Object {
+        "operationId": "import",
+        "requestBody": Object {
+          "content": Object {
+            "application/json": Object {
+              "schema": Object {
+                "$ref": "#/components/schemas/stateSchema",
+              },
+            },
+          },
+          "description": "stateSchema",
+          "required": true,
+        },
+        "responses": Object {
+          "202": Object {
+            "description": "emptyResponse",
+          },
+        },
+        "tags": Array [
+          "admin",
+        ],
+      },
+    },
     "/api/admin/tag-types": Object {
       "get": Object {
         "operationId": "getTagTypes",