diff --git a/packages/i18n/src/locales/en_US.ts b/packages/i18n/src/locales/en_US.ts
index 9d186d5d0..0016b5421 100644
--- a/packages/i18n/src/locales/en_US.ts
+++ b/packages/i18n/src/locales/en_US.ts
@@ -2894,6 +2894,10 @@ const translations: Catalog = {
               description:
                 'Show a list of all the named connections for this instance from the Connection Registry.',
             },
+            listWorkspaceDefaults: {
+              description:
+                'Show the default tier and maxTierSize for the stream processor workspace.',
+            },
           },
         },
       },
diff --git a/packages/shell-api/src/streams.spec.ts b/packages/shell-api/src/streams.spec.ts
index 538045b10..68995d790 100644
--- a/packages/shell-api/src/streams.spec.ts
+++ b/packages/shell-api/src/streams.spec.ts
@@ -312,4 +312,22 @@ describe('Streams', function () {
       ).to.be.true;
     });
   });
+
+  describe('listWorkspaceDefaults', function () {
+    it('returns tier and maxTierSize', async function () {
+      const runCmdStub = sinon
+        .stub(mongo._serviceProvider, 'runCommand')
+        .resolves({ ok: 1, defaultTierSize: 'SP2', maxTierSize: 'SP30' });
+
+      const result = await streams.listWorkspaceDefaults();
+      expect(result).to.eql({
+        ok: 1,
+        defaultTierSize: 'SP2',
+        maxTierSize: 'SP30',
+      });
+
+      const cmd = { listWorkspaceDefaults: 1 };
+      expect(runCmdStub.calledOnceWithExactly('admin', cmd, {})).to.be.true;
+    });
+  });
 });
diff --git a/packages/shell-api/src/streams.ts b/packages/shell-api/src/streams.ts
index 1a1797909..f2c2047e2 100644
--- a/packages/shell-api/src/streams.ts
+++ b/packages/shell-api/src/streams.ts
@@ -13,6 +13,11 @@ import type Mongo from './mongo';
 import type { GenericDatabaseSchema, GenericServerSideSchema } from './helpers';
 import type { MQLPipeline } from './mql-types';
 
+type WorkspaceDefaults = {
+  defaultTierSize: string;
+  maxTierSize: string;
+};
+
 @shellApiClassDefault
 export class Streams<
   M extends GenericServerSideSchema = GenericServerSideSchema,
@@ -162,6 +167,13 @@ export class Streams<
     });
   }
 
+  @returnsPromise
+  async listWorkspaceDefaults(): Promise<WorkspaceDefaults> {
+    return (await this._runStreamCommand({
+      listWorkspaceDefaults: 1,
+    })) as WorkspaceDefaults;
+  }
+
   async _runStreamCommand(cmd: Document, options: Document = {}) {
     return this._mongo._serviceProvider.runCommand(ADMIN_DB, cmd, options); // run cmd
   }