diff --git a/knip.json b/knip.json
index 3cec36a06..7af9ba72f 100644
--- a/knip.json
+++ b/knip.json
@@ -16,6 +16,7 @@
         "@databricks/sdk-files",
         "@databricks/sdk-genie",
         "@databricks/sdk-jobs",
+        "@databricks/sdk-postgres",
         "@databricks/sdk-uc-tables",
         "@databricks/sdk-vectorsearch",
         "@databricks/sdk-options",
diff --git a/packages/appkit/package.json b/packages/appkit/package.json
index b80fef165..445adfaa8 100644
--- a/packages/appkit/package.json
+++ b/packages/appkit/package.json
@@ -80,6 +80,7 @@
     "@databricks/sdk-uc-tables": "0.52.0",
     "@databricks/sdk-vectorsearch": "0.51.0",
     "@databricks/sdk-options": "0.51.0",
+    "@databricks/sdk-postgres": "0.52.0",
     "@databricks/sdk-scim": "0.51.0",
     "@databricks/sdk-statementexecution": "0.52.0",
     "@databricks/sdk-warehouses": "0.53.0",
diff --git a/packages/appkit/src/testing/mock-workspace-client.ts b/packages/appkit/src/testing/mock-workspace-client.ts
index 3b21896a7..24da241fe 100644
--- a/packages/appkit/src/testing/mock-workspace-client.ts
+++ b/packages/appkit/src/testing/mock-workspace-client.ts
@@ -71,6 +71,7 @@ const FACADE_SERVICES = [
   "jobs",
   "vectorSearch",
   "tables",
+  "postgres",
   "statementExecution",
   "servingEndpoints",
   "currentUser",
diff --git a/packages/shared/package.json b/packages/shared/package.json
index 33df9896a..de317aecf 100644
--- a/packages/shared/package.json
+++ b/packages/shared/package.json
@@ -57,6 +57,7 @@
     "@databricks/sdk-uc-tables": "0.52.0",
     "@databricks/sdk-vectorsearch": "0.51.0",
     "@databricks/sdk-options": "0.51.0",
+    "@databricks/sdk-postgres": "0.52.0",
     "@databricks/sdk-scim": "0.51.0",
     "@databricks/sdk-statementexecution": "0.52.0",
     "@databricks/sdk-warehouses": "0.53.0",
diff --git a/packages/shared/src/workspace-client/client.ts b/packages/shared/src/workspace-client/client.ts
index ec1dbe624..c704f95a4 100644
--- a/packages/shared/src/workspace-client/client.ts
+++ b/packages/shared/src/workspace-client/client.ts
@@ -26,6 +26,8 @@ import {
   type FilesClient,
   buildTablesClient,
   type TablesClient,
+  buildPostgresClient,
+  type PostgresClient,
   buildVectorSearchClient,
   type VectorSearchClient,
   type StatementExecutionClient,
@@ -47,6 +49,7 @@ export class AppKitWorkspaceClient implements WorkspaceClient {
   #files?: FilesClient;
   #vectorSearch?: VectorSearchClient;
   #tables?: TablesClient;
+  #postgres?: PostgresClient;
 
   constructor(opts: WorkspaceClientOptions) {
     this.#opts = opts;
@@ -100,6 +103,14 @@ export class AppKitWorkspaceClient implements WorkspaceClient {
     return this.#tables;
   }
 
+  // Migrated to the modular SDK — built lazily, independent of the legacy client.
+  get postgres(): PostgresClient {
+    if (!this.#postgres) {
+      this.#postgres = buildPostgresClient(this.#opts);
+    }
+    return this.#postgres;
+  }
+
   // Migrated to the modular SDK — built lazily, independent of the legacy client.
   get statementExecution(): StatementExecutionClient {
     if (!this.#statementExecution) {
diff --git a/packages/shared/src/workspace-client/modular.ts b/packages/shared/src/workspace-client/modular.ts
index 4c645ab85..3fe97d6be 100644
--- a/packages/shared/src/workspace-client/modular.ts
+++ b/packages/shared/src/workspace-client/modular.ts
@@ -56,6 +56,7 @@ import type { FilesClient } from "@databricks/sdk-files/v2";
 import type { GenieClient } from "@databricks/sdk-genie/v1";
 import type { JobsClient } from "@databricks/sdk-jobs/v2";
 import type { ClientOptions } from "@databricks/sdk-options/client";
+import type { PostgresClient } from "@databricks/sdk-postgres/v1";
 import { ScimClient } from "@databricks/sdk-scim/v1";
 import { StatementExecutionClient } from "@databricks/sdk-statementexecution/v1";
 import type { TablesClient } from "@databricks/sdk-uc-tables/v1";
@@ -623,6 +624,20 @@ export function buildTablesClient(opts: WorkspaceClientOptions): TablesClient {
   );
 }
 
+/**
+ * Build a modular Lakebase Postgres (autoscaling: projects, branches,
+ * endpoints) client from wrapper options. Distinct from the provisioned
+ * `/api/2.0/database` instance API.
+ */
+export function buildPostgresClient(
+  opts: WorkspaceClientOptions,
+): PostgresClient {
+  return lazyClient(
+    () => import("@databricks/sdk-postgres/v1").then((m) => m.PostgresClient),
+    mapToClientOptions(opts),
+  );
+}
+
 // ── Client type re-exports (for the facade accessor types) ───────────────
 export type { FilesClient } from "@databricks/sdk-files/v2";
 export type {
@@ -631,6 +646,7 @@ export type {
 } from "@databricks/sdk-files/v2";
 export type { GenieClient } from "@databricks/sdk-genie/v1";
 export type { JobsClient } from "@databricks/sdk-jobs/v2";
+export type { PostgresClient } from "@databricks/sdk-postgres/v1";
 export type { ScimClient } from "@databricks/sdk-scim/v1";
 export type { StatementExecutionClient } from "@databricks/sdk-statementexecution/v1";
 export type { TablesClient } from "@databricks/sdk-uc-tables/v1";
diff --git a/packages/shared/src/workspace-client/tests/modular.test.ts b/packages/shared/src/workspace-client/tests/modular.test.ts
index 4b9928fd1..383dacf36 100644
--- a/packages/shared/src/workspace-client/tests/modular.test.ts
+++ b/packages/shared/src/workspace-client/tests/modular.test.ts
@@ -55,6 +55,12 @@ vi.mock("@databricks/sdk-genie/v1", () => ({
     };
   }),
 }));
+vi.mock("@databricks/sdk-postgres/v1", () => ({
+  PostgresClient: vi.fn().mockImplementation((opts) => {
+    ctorOpts.push(opts);
+    return { opts, getEndpoint: async () => ({}) };
+  }),
+}));
 vi.mock("@databricks/sdk-auth/credentials", () => ({
   newPatCredentials: vi.fn((token: string) => {
     patTokens.push(token);
@@ -120,6 +126,7 @@ import { ApiError } from "../errors";
 import {
   buildGenieClient,
   buildWarehousesClient,
+  buildPostgresClient,
   buildWorkspaceAuth,
 } from "../modular";
 
@@ -345,6 +352,33 @@ describe("modular mapToClientOptions (via buildWarehousesClient)", () => {
     expect(Reflect.get(client, "then")).toBeUndefined();
   });
 
+  test("postgres normalizes the host and passes SP M2M credentials", async () => {
+    process.env.DATABRICKS_HOST = "envhost.cloud.databricks.com";
+    process.env.DATABRICKS_CLIENT_ID = "sp-client-id";
+    process.env.DATABRICKS_CLIENT_SECRET = "sp-secret";
+    await buildPostgresClient({}).getEndpoint({ name: "e" });
+    expect(ctorOpts[0].host).toBe("https://envhost.cloud.databricks.com");
+    expect((ctorOpts[0].credentials as { name: () => string }).name()).toBe(
+      "oauth-m2m",
+    );
+  });
+
+  test("postgres (asUser) uses the OBO token as PAT, not the SP env creds", async () => {
+    process.env.DATABRICKS_CLIENT_ID = "sp-client-id";
+    process.env.DATABRICKS_CLIENT_SECRET = "sp-secret";
+    await buildPostgresClient({
+      token: "user-token",
+      host: "https://x",
+    }).getEndpoint({
+      name: "e",
+    });
+    expect(ctorOpts[0].credentials).toMatchObject({
+      kind: "pat",
+      token: "user-token",
+    });
+    expect(m2mOpts).toEqual([]);
+  });
+
   test("no product configured (build-time) → transport adds no AppKit User-Agent", async () => {
     buildWarehousesClient({ host: "https://x" });
     expect(await sentUserAgent(ctorOpts[0].httpClient)).toBeNull();
diff --git a/packages/shared/src/workspace-client/types.ts b/packages/shared/src/workspace-client/types.ts
index 4444e5fbe..7a1e0abba 100644
--- a/packages/shared/src/workspace-client/types.ts
+++ b/packages/shared/src/workspace-client/types.ts
@@ -24,6 +24,7 @@ import type {
   FilesClient,
   TablesClient,
   VectorSearchClient,
+  PostgresClient,
 } from "./modular";
 
 // Legacy SDK type namespaces for un-migrated services, re-exported so AppKit
@@ -64,6 +65,8 @@ export interface WorkspaceClient extends WorkspaceAuth {
 
   /** Unity Catalog Tables (modular SDK). */
   readonly tables: TablesClient;
+  /** Lakebase Postgres: autoscaling projects, branches, endpoints (modular SDK). */
+  readonly postgres: PostgresClient;
 
   /** Statement Execution (modular SDK). */
   readonly statementExecution: StatementExecutionClient;
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 87927c2ad..d09f608b1 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -302,6 +302,9 @@ importers:
       '@databricks/sdk-options':
         specifier: 0.51.0
         version: 0.51.0
+      '@databricks/sdk-postgres':
+        specifier: 0.52.0
+        version: 0.52.0
       '@databricks/sdk-scim':
         specifier: 0.51.0
         version: 0.51.0
@@ -650,6 +653,9 @@ importers:
       '@databricks/sdk-options':
         specifier: 0.51.0
         version: 0.51.0
+      '@databricks/sdk-postgres':
+        specifier: 0.52.0
+        version: 0.52.0
       '@databricks/sdk-scim':
         specifier: 0.51.0
         version: 0.51.0
@@ -2062,6 +2068,10 @@ packages:
     resolution: {integrity: sha512-p5uBh64Y1onnvwlEwfRsmKmGRI23Y4Ly8fZiCgNUwVDe4Z9d0ctI0mo1v4gnDqlmBaBml3TZfqn5BJBROCXsEw==}
     engines: {node: '>=22.0.0'}
 
+  '@databricks/sdk-postgres@0.52.0':
+    resolution: {integrity: sha512-QW+H5Oc3ehfwuYJRcV424lly+msjdir5RqK/4/a7BbDpKtugMgAxLMJl2ojw48B3e4xAqh3JsUT21vmHeVPtGQ==}
+    engines: {node: '>=22.0.0'}
+
   '@databricks/sdk-scim@0.51.0':
     resolution: {integrity: sha512-WSTpuID4gRoTxVApyxujW+MsI5ANvmn8/DqPK6fXqxCkSINLEbtR+GTk/th8xnADtJekKNIWzeORFblXd3idcg==}
     engines: {node: '>=22.0.0'}
@@ -14410,6 +14420,15 @@ snapshots:
       '@databricks/sdk-auth': 0.51.0
       '@databricks/sdk-core': 0.51.0
 
+  '@databricks/sdk-postgres@0.52.0':
+    dependencies:
+      '@databricks/sdk-auth': 0.51.0
+      '@databricks/sdk-core': 0.51.0
+      '@databricks/sdk-options': 0.51.0
+      '@js-temporal/polyfill': 0.5.1
+      json-bigint: 1.0.0
+      zod: 4.3.6
+
   '@databricks/sdk-scim@0.51.0':
     dependencies:
       '@databricks/sdk-auth': 0.51.0