diff --git a/src/lib/openapi/index.ts b/src/lib/openapi/index.ts
index 003ff62332..a0304587ed 100644
--- a/src/lib/openapi/index.ts
+++ b/src/lib/openapi/index.ts
@@ -193,6 +193,8 @@ import { advancedPlaygroundEnvironmentFeatureSchema } from './spec/advanced-play
 import { createFeatureNamingPatternSchema } from './spec/create-feature-naming-pattern-schema';
 import { segmentStrategiesSchema } from './spec/segment-strategies-schema';
 import { featureDependenciesSchema } from './spec/feature-dependencies-schema';
+import { projectApplicationsSchema } from './spec/project-applications-schema';
+import { projectApplicationSchema } from './spec/project-application-schema';
 
 // Schemas must have an $id property on the form "#/components/schemas/mySchema".
 export type SchemaId = (typeof schemas)[keyof typeof schemas]['$id'];
@@ -322,6 +324,8 @@ export const schemas: UnleashSchemas = {
     playgroundSegmentSchema,
     playgroundStrategySchema,
     profileSchema,
+    projectApplicationSchema,
+    projectApplicationsSchema,
     projectEnvironmentSchema,
     projectSchema,
     projectsSchema,
diff --git a/src/lib/openapi/spec/project-application-schema.ts b/src/lib/openapi/spec/project-application-schema.ts
new file mode 100644
index 0000000000..ae2faf57aa
--- /dev/null
+++ b/src/lib/openapi/spec/project-application-schema.ts
@@ -0,0 +1,36 @@
+import { FromSchema } from 'json-schema-to-ts';
+
+export const projectApplicationSchema = {
+    $id: '#/components/schemas/projectApplicationSchema',
+    type: 'object',
+    additionalProperties: false,
+    required: ['appName', 'instanceId', 'sdkVersion', 'environment'],
+    description: 'A project application instance.',
+    properties: {
+        appName: {
+            type: 'string',
+            description:
+                'Name of the application that is using the SDK. This is the same as the appName in the SDK configuration.',
+        },
+        instanceId: {
+            type: 'string',
+            description:
+                'The unique identifier of the application instance. This is the same as the instanceId in the SDK configuration',
+        },
+        sdkVersion: {
+            type: 'string',
+            description:
+                'The version of the SDK that is being used by the application',
+        },
+        environment: {
+            type: 'string',
+            description:
+                'The environment that the application is running in. This is coming from token configured in the SDK configuration.',
+        },
+    },
+    components: {},
+} as const;
+
+export type ProjectApplicationSchema = FromSchema<
+    typeof projectApplicationSchema
+>;
diff --git a/src/lib/openapi/spec/project-applications-schema.test.ts b/src/lib/openapi/spec/project-applications-schema.test.ts
new file mode 100644
index 0000000000..98b44e076d
--- /dev/null
+++ b/src/lib/openapi/spec/project-applications-schema.test.ts
@@ -0,0 +1,17 @@
+import { validateSchema } from '../validate';
+import { ProjectApplicationsSchema } from './project-applications-schema';
+
+test('projectApplicationsSchema', () => {
+    const data: ProjectApplicationsSchema = [
+        {
+            appName: 'my-weba-app',
+            instanceId: 'app1:3:4',
+            sdkVersion: '4.1.1',
+            environment: 'production',
+        },
+    ];
+
+    expect(
+        validateSchema('#/components/schemas/projectApplicationsSchema', data),
+    ).toBeUndefined();
+});
diff --git a/src/lib/openapi/spec/project-applications-schema.ts b/src/lib/openapi/spec/project-applications-schema.ts
new file mode 100644
index 0000000000..ef0e990a3e
--- /dev/null
+++ b/src/lib/openapi/spec/project-applications-schema.ts
@@ -0,0 +1,20 @@
+import { FromSchema } from 'json-schema-to-ts';
+import { projectApplicationSchema } from './project-application-schema';
+
+export const projectApplicationsSchema = {
+    $id: '#/components/schemas/projectApplicationsSchema',
+    type: 'array',
+    description: 'A list of project applications',
+    items: {
+        $ref: '#/components/schemas/projectApplicationSchema',
+    },
+    components: {
+        schemas: {
+            projectApplicationSchema,
+        },
+    },
+} as const;
+
+export type ProjectApplicationsSchema = FromSchema<
+    typeof projectApplicationsSchema
+>;