diff --git a/scripts/release_sdks.sh b/scripts/release_sdks.sh
index 2cf2c72..2c1aed6 100755
--- a/scripts/release_sdks.sh
+++ b/scripts/release_sdks.sh
@@ -81,8 +81,29 @@ ts.write_text(
     re.sub(r'"version": "[^"]+"', f'"version": "{version}"', ts.read_text(), count=1)
 )
 
+ts_lock = pathlib.Path("sdk/typescript/package-lock.json")
+if ts_lock.exists():
+    lock_text = ts_lock.read_text()
+    lock_text = re.sub(
+        r'^  "version": "[^"]+"',
+        f'  "version": "{version}"',
+        lock_text,
+        count=1,
+        flags=re.M,
+    )
+    lock_text = re.sub(
+        r'^(      "version": ")[^"]+(")',
+        rf'\g<1>{version}\2',
+        lock_text,
+        count=1,
+        flags=re.M,
+    )
+    ts_lock.write_text(lock_text)
+
 print(f"  pyproject.toml → {version}")
 print(f"  package.json  → {version}")
+if ts_lock.exists():
+    print(f"  package-lock.json → {version}")
 PY
 
 echo "→ Building Python wheel + sdist..."
diff --git a/sdk/python/pyproject.toml b/sdk/python/pyproject.toml
index bdfcdb6..c502e1b 100644
--- a/sdk/python/pyproject.toml
+++ b/sdk/python/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "dograh-sdk"
-version = "0.1.6"
+version = "0.1.7"
 description = "Typed builder for Dograh voice-AI workflows"
 readme = "README.md"
 requires-python = ">=3.10"
diff --git a/sdk/python/src/dograh_sdk/_generated_models.py b/sdk/python/src/dograh_sdk/_generated_models.py
index 883cc00..6ab3e9a 100644
--- a/sdk/python/src/dograh_sdk/_generated_models.py
+++ b/sdk/python/src/dograh_sdk/_generated_models.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
-#   filename:  dograh-openapi-EZT8BU.json
-#   timestamp: 2026-05-31T10:54:36+00:00
+#   filename:  dograh-openapi-DuffQq.json
+#   timestamp: 2026-05-31T11:41:57+00:00
 
 from __future__ import annotations
 
diff --git a/sdk/typescript/package-lock.json b/sdk/typescript/package-lock.json
index 0cd36cf..fa804ff 100644
--- a/sdk/typescript/package-lock.json
+++ b/sdk/typescript/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@dograh/sdk",
-  "version": "0.1.3",
+  "version": "0.1.7",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@dograh/sdk",
-      "version": "0.1.3",
+      "version": "0.1.7",
       "license": "BSD-2-Clause",
       "devDependencies": {
         "openapi-typescript": "^7.13.0",
diff --git a/sdk/typescript/package.json b/sdk/typescript/package.json
index 6bc8b26..a554f59 100644
--- a/sdk/typescript/package.json
+++ b/sdk/typescript/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@dograh/sdk",
-  "version": "0.1.6",
+  "version": "0.1.7",
   "description": "Typed builder for Dograh voice-AI workflows",
   "license": "BSD-2-Clause",
   "author": "Zansat Technologies Private Limited",
diff --git a/sdk/typescript/src/client.ts b/sdk/typescript/src/client.ts
index 5c65c01..6565fc8 100644
--- a/sdk/typescript/src/client.ts
+++ b/sdk/typescript/src/client.ts
@@ -16,19 +16,48 @@ import type {
 import { ApiError, SpecMismatchError } from "./errors.js";
 import { Workflow, type SpecProvider } from "./workflow.js";
 
+type RuntimeProcess = {
+    env?: Record<string, string | undefined>;
+};
+
+export interface DograhFetchInit {
+    method?: string;
+    headers?: Record<string, string>;
+    body?: string;
+    signal?: unknown;
+}
+
+export interface DograhFetchResponse {
+    ok: boolean;
+    status: number;
+    statusText: string;
+    json(): Promise<unknown>;
+    text(): Promise<string>;
+}
+
+export type DograhFetch = (
+    url: string,
+    init?: DograhFetchInit,
+) => Promise<DograhFetchResponse>;
+
+function getRuntimeEnv(name: string): string | undefined {
+    const runtime = globalThis as typeof globalThis & { process?: RuntimeProcess };
+    return runtime.process?.env?.[name];
+}
+
 export interface DograhClientOptions {
     baseUrl?: string;
     apiKey?: string;
     /** Request timeout in ms. */
     timeoutMs?: number;
     /** Optional fetch override for tests / custom transports. */
-    fetch?: typeof globalThis.fetch;
+    fetch?: DograhFetch;
 }
 
 export class DograhClient extends _GeneratedClient implements SpecProvider {
     readonly baseUrl: string;
     readonly apiKey: string | undefined;
-    private readonly fetchImpl: typeof globalThis.fetch;
+    private readonly fetchImpl: DograhFetch;
     private readonly timeoutMs: number;
     private readonly headers: Record<string, string>;
     private readonly specCache = new Map<string, NodeSpec>();
@@ -38,13 +67,11 @@ export class DograhClient extends _GeneratedClient implements SpecProvider {
         super();
         const rawBase =
             opts.baseUrl ??
-            (typeof process !== "undefined" ? process.env.DOGRAH_API_URL : undefined) ??
+            getRuntimeEnv("DOGRAH_API_URL") ??
             "http://localhost:8000";
         this.baseUrl = rawBase.replace(/\/+$/, "");
-        this.apiKey =
-            opts.apiKey ??
-            (typeof process !== "undefined" ? process.env.DOGRAH_API_KEY : undefined);
-        this.fetchImpl = opts.fetch ?? globalThis.fetch;
+        this.apiKey = opts.apiKey ?? getRuntimeEnv("DOGRAH_API_KEY");
+        this.fetchImpl = opts.fetch ?? (globalThis.fetch as unknown as DograhFetch);
         this.timeoutMs = opts.timeoutMs ?? 30_000;
         this.headers = { Accept: "application/json" };
         if (this.apiKey) this.headers["X-API-Key"] = this.apiKey;
@@ -126,7 +153,7 @@ export class DograhClient extends _GeneratedClient implements SpecProvider {
         }
 
         const hasBody = opts?.json !== undefined;
-        const init: RequestInit = {
+        const init: DograhFetchInit = {
             method,
             headers: {
                 ...this.headers,
@@ -139,7 +166,7 @@ export class DograhClient extends _GeneratedClient implements SpecProvider {
         const timer = setTimeout(() => controller.abort(), this.timeoutMs);
         init.signal = controller.signal;
 
-        let resp: Response;
+        let resp: DograhFetchResponse;
         try {
             resp = await this.fetchImpl(url, init);
         } finally {
diff --git a/sdk/typescript/src/index.ts b/sdk/typescript/src/index.ts
index a529760..9bce491 100644
--- a/sdk/typescript/src/index.ts
+++ b/sdk/typescript/src/index.ts
@@ -26,7 +26,12 @@
  */
 
 export { DograhClient } from "./client.js";
-export type { DograhClientOptions } from "./client.js";
+export type {
+    DograhClientOptions,
+    DograhFetch,
+    DograhFetchInit,
+    DograhFetchResponse,
+} from "./client.js";
 export {
     ApiError,
     DograhSdkError,
diff --git a/sdk/typescript/tsconfig.json b/sdk/typescript/tsconfig.json
index 3fb9984..035b54a 100644
--- a/sdk/typescript/tsconfig.json
+++ b/sdk/typescript/tsconfig.json
@@ -3,7 +3,7 @@
         "target": "ES2022",
         "module": "NodeNext",
         "moduleResolution": "NodeNext",
-        "lib": ["ES2022"],
+        "lib": ["ES2022", "DOM"],
         "strict": true,
         "noUncheckedIndexedAccess": true,
         "declaration": true,