feat(api): speech session improvements for API 1.1

Author: zachoverflow

_carbonsteel.json

@@ -1,7 +1,7 @@
 {
   "version": "1.1",
-  "generated_at": "2026-05-07T23:13:22Z",
-  "spec_sha": "dd2556942628d8b4:63d381c5e2045349",
+  "generated_at": "2026-05-09T12:00:13Z",
+  "spec_sha": "4c822a78c44f68ac:53f7f73325c83be4",
   "files": [
     "api.md",
     "src/_shims/MultipartBody.ts",

src/_websocketRuntime.ts

@@ -1,11 +1,7 @@
-// Vendored by carbonsteel. DO NOT EDIT here in the SDK; edit
-// tool/carbonsteel/src/lmnt/tool/carbonsteel/codegen/node/vendor/src/_websocketRuntime.ts
-// in the monorepo and re-run carbonsteel.
-//
 // Spec-agnostic WebSocket session helpers shared by the generated SpeechSession.
 // MessageQueue: simple async resolver/buffer pair so the generated session can
 // expose an `AsyncIterator` while the underlying WebSocket pushes via callbacks.
-// processAudioData: normalises Blob/Buffer payloads to a uniform binary type.
+// processBinaryFrame: normalises Blob/Buffer payloads to a uniform binary type.
 
 import { Buffer } from 'buffer';
 import { LmntError } from './error';
@@ -47,12 +43,12 @@ export class MessageQueue {
   }
 }
 
-export async function processAudioData(audioData: Blob | Buffer): Promise<ArrayBuffer | Buffer> {
-  if (audioData instanceof Blob) {
-    return await audioData.arrayBuffer();
-  } else if (audioData instanceof Buffer) {
-    return audioData;
+export async function processBinaryFrame(frame: Blob | Buffer): Promise<ArrayBuffer | Buffer> {
+  if (frame instanceof Blob) {
+    return await frame.arrayBuffer();
+  } else if (frame instanceof Buffer) {
+    return frame;
   } else {
-    throw new LmntError(`Unexpected message type received from server: ${audioData}`);
+    throw new LmntError(`Unexpected message type received from server: ${frame}`);
   }
 }

src/core.ts

@@ -85,24 +85,24 @@ async function defaultParseResponse<T>(props: APIResponseProps): Promise<T> {
 }
 
 /**
- * Attaches `_request_id` (read from the `request-id` response header) as a non-enumerable
+ * Attaches `request_id` (read from the `request-id` response header) as a non-enumerable
  * property on object responses. Skipped for arrays and non-objects (callers can read the
  * `request-id` header from the underlying `Response` directly via `.withResponse()`).
  */
 export function addRequestID<T>(value: T, response: Response): T {
   if (!value || typeof value !== 'object' || Array.isArray(value)) {
     return value;
   }
-  return Object.defineProperty(value, '_request_id', {
+  return Object.defineProperty(value, 'request_id', {
     value: response.headers.get('request-id'),
     enumerable: false,
   }) as T;
 }
 
-/** Optional `_request_id` field added to plain-object responses by `addRequestID`. */
+/** `request_id` field added to plain-object responses by `addRequestID`. */
 export type WithRequestID<T> =
   T extends Array<any> | Response ? T
-  : T extends Record<string, any> ? T & { _request_id?: string | null }
+  : T extends Record<string, any> ? T & { request_id: string | null }
   : T;
 
 /**

src/error.ts

@@ -17,7 +17,7 @@ export class APIError<
   readonly error: TError;
 
   /** The unique identifier of the request that caused this error, matching the `request-id` response header. */
-  readonly requestID: string | null | undefined;
+  readonly request_id: string | null | undefined;
 
   /** The `error.type` from the API response body, e.g. `"rate_limit_error"`. */
   readonly type: string | null;
@@ -32,7 +32,7 @@ export class APIError<
     super(`${APIError.makeMessage(status, error, message)}`);
     this.status = status;
     this.headers = headers;
-    this.requestID = headers?.['request-id'] ?? undefined;
+    this.request_id = headers?.['request-id'] ?? undefined;
     this.error = error;
     this.type = type ?? null;
   }