diff --git a/packages/cli/package.json b/packages/cli/package.json
index 83467bb..2364bbc 100644
--- a/packages/cli/package.json
+++ b/packages/cli/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mulerouter",
-  "version": "0.4.0",
+  "version": "0.4.2",
   "description": "CLI for MuleRouter/MuleRun multimodal AI APIs — generate images, videos, speech, and music",
   "type": "module",
   "license": "MIT",
diff --git a/packages/cli/tests/run.test.ts b/packages/cli/tests/run.test.ts
index 45552f2..69082a6 100644
--- a/packages/cli/tests/run.test.ts
+++ b/packages/cli/tests/run.test.ts
@@ -62,11 +62,12 @@ describe("run command internals", () => {
         language_boost: "English",
       });
       expect(result.audio_setting).toEqual({
-        output_format: "url",
         format: "mp3",
         sample_rate: 44100,
         bitrate: 128000,
       });
+      // output_format is at body root per upstream schema, NOT inside audio_setting
+      expect(result.output_format).toBe("url");
       expect(result.english_normalization).toBe(true);
     });
 
diff --git a/packages/core/package.json b/packages/core/package.json
index dd365f5..d9075fd 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@mulerouter/core",
-  "version": "0.4.0",
+  "version": "0.4.2",
   "description": "Core library for MuleRouter/MuleRun multimodal AI APIs",
   "type": "module",
   "license": "MIT",
diff --git a/packages/core/src/models/alibaba/wan2.1-vace-plus.ts b/packages/core/src/models/alibaba/wan2.1-vace-plus.ts
index f8bdd91..9f370a0 100644
--- a/packages/core/src/models/alibaba/wan2.1-vace-plus.ts
+++ b/packages/core/src/models/alibaba/wan2.1-vace-plus.ts
@@ -7,7 +7,7 @@ const endpoint: ModelEndpoint = {
   provider: "alibaba",
   modelName: "wan2.1-vace-plus",
   description:
-    "Wan2.1 VACE Plus: Advanced video editing — outpainting, inpainting, interpolation, and more",
+    "Wan2.1 VACE Plus: Advanced video editing — image_reference, video_repainting, video_edit, video_extension, video_outpainting",
   inputTypes: ["text", "image", "video"],
   outputType: "video",
   apiPath: "/vendors/alibaba/v1/wan2.1-vace-plus/generation",
@@ -24,45 +24,154 @@ const endpoint: ModelEndpoint = {
     {
       name: "function",
       type: "string",
-      description: "VACE function to use",
+      description:
+        "VACE function. image_reference: multi-image fusion to video (needs --images, 1-3). video_repainting: repaint video by control features (needs --video-url + --control-condition). video_edit: local edit by mask (needs --video-url + one of --mask-image-url/--mask-video-url). video_extension: extend a video (combine --first/last-frame-url, --first/last-clip-url, --video-url). video_outpainting: expand canvas (needs --video-url + --top/bottom/left/right-scale).",
       required: true,
-      enum: ["outpainting", "video_extend", "reference_generation", "interpolation", "inpainting"],
-    },
-    { name: "prompt", type: "string", description: "Text prompt", required: true },
-    { name: "negative_prompt", type: "string", description: "Text describing what to avoid" },
-    { name: "ref_images_url", type: "array", description: "Reference image URLs" },
-    { name: "obj_or_bg", type: "string", description: "Object or background mode" },
-    { name: "video_url", type: "string", description: "Input video URL" },
-    { name: "control_condition", type: "string", description: "Control condition" },
-    { name: "strength", type: "number", description: "Control strength" },
-    { name: "mask_image_url", type: "string", description: "Mask image URL" },
-    { name: "mask_video_url", type: "string", description: "Mask video URL" },
-    { name: "mask_frame_id", type: "string", description: "Mask frame ID" },
-    { name: "mask_type", type: "string", description: "Mask type" },
-    { name: "expand_ratio", type: "number", description: "Expand ratio for outpainting" },
-    { name: "expand_mode", type: "string", description: "Expand mode for outpainting" },
-    { name: "first_frame_url", type: "string", description: "First frame image URL" },
-    { name: "last_frame_url", type: "string", description: "Last frame image URL" },
-    { name: "first_clip_url", type: "string", description: "First clip URL" },
-    { name: "last_clip_url", type: "string", description: "Last clip URL" },
-    { name: "top_scale", type: "number", description: "Top scale for outpainting" },
-    { name: "bottom_scale", type: "number", description: "Bottom scale for outpainting" },
-    { name: "left_scale", type: "number", description: "Left scale for outpainting" },
-    { name: "right_scale", type: "number", description: "Right scale for outpainting" },
-    { name: "size", type: "string", description: "Output resolution" },
-    { name: "duration", type: "integer", description: "Video duration in seconds", default: 5 },
+      enum: [
+        "image_reference",
+        "video_repainting",
+        "video_edit",
+        "video_extension",
+        "video_outpainting",
+      ],
+    },
+    {
+      name: "prompt",
+      type: "string",
+      description: "Text prompt (≤800 chars)",
+      required: true,
+    },
+    {
+      name: "images",
+      type: "array",
+      description:
+        "Input reference image URLs (JSON array). image_reference: 1-3 images. video_repainting/video_edit: exactly 1 (optional). Example: --images '[\"https://...png\"]'",
+    },
+    {
+      name: "obj_or_bg",
+      type: "array",
+      description:
+        "image_reference only: per-image role tags, parallel to --images. Each entry 'obj' or 'bg'. 'bg' may appear at most once. ⚠ Upstream Bailian requires length == --images length EVEN for a single image (mule-router accepts None for single image but Bailian rejects with InvalidParameter); for 1 image pass '[\"obj\"]' or '[\"bg\"]'. Required when --images length > 1.",
+    },
+    {
+      name: "video_url",
+      type: "string",
+      description:
+        "Input video URL. Required for video_repainting, video_edit, video_outpainting; optional for video_extension (if set, --control-condition becomes required).",
+    },
+    {
+      name: "control_condition",
+      type: "string",
+      description:
+        "Feature-extraction mode. video_repainting: posebodyface|posebody|depth|scribble (required). video_edit: posebodyface|depth. video_extension: posebodyface|depth (required when --video-url is provided).",
+    },
+    {
+      name: "strength",
+      type: "number",
+      description: "video_repainting only: control strength, 0.0–1.0 (default 1.0).",
+    },
+    {
+      name: "mask_image_url",
+      type: "string",
+      description:
+        "video_edit only: mask image URL. Mutually exclusive with --mask-video-url; exactly one required.",
+    },
+    {
+      name: "mask_video_url",
+      type: "string",
+      description:
+        "video_edit only: mask video URL. Mutually exclusive with --mask-image-url; exactly one required.",
+    },
+    {
+      name: "mask_frame_id",
+      type: "integer",
+      description: "video_edit only: 1-based frame index where the mask target appears.",
+    },
+    {
+      name: "mask_type",
+      type: "string",
+      description: "video_edit only: mask type. Effective when --mask-image-url is set.",
+      enum: ["tracking", "fixed"],
+    },
+    {
+      name: "expand_ratio",
+      type: "number",
+      description: "video_edit only with --mask-type tracking: mask expansion ratio, 0.0–1.0.",
+    },
+    {
+      name: "expand_mode",
+      type: "string",
+      description:
+        "video_edit only with --mask-type tracking: mask region shape. Note: 'orginal' is the upstream spelling (verbatim).",
+      enum: ["hull", "bbox", "orginal"],
+    },
+    {
+      name: "first_frame_url",
+      type: "string",
+      description: "video_extension only: first frame image URL.",
+    },
+    {
+      name: "last_frame_url",
+      type: "string",
+      description: "video_extension only: last frame image URL.",
+    },
+    {
+      name: "first_clip_url",
+      type: "string",
+      description: "video_extension only: first video clip URL (mp4, ≤3s, ≤50MB).",
+    },
+    {
+      name: "last_clip_url",
+      type: "string",
+      description: "video_extension only: last video clip URL (mp4, ≤3s, ≤50MB).",
+    },
+    {
+      name: "top_scale",
+      type: "number",
+      description:
+        "video_outpainting only: upward expansion scale, 1.0–2.0 (default 1.0 = no expansion).",
+    },
+    {
+      name: "bottom_scale",
+      type: "number",
+      description: "video_outpainting only: downward expansion scale, 1.0–2.0 (default 1.0).",
+    },
+    {
+      name: "left_scale",
+      type: "number",
+      description: "video_outpainting only: leftward expansion scale, 1.0–2.0 (default 1.0).",
+    },
+    {
+      name: "right_scale",
+      type: "number",
+      description: "video_outpainting only: rightward expansion scale, 1.0–2.0 (default 1.0).",
+    },
+    {
+      name: "size",
+      type: "string",
+      description: "Output resolution. Applies to image_reference and video_edit.",
+      enum: ["1280x720", "720x1280", "960x960", "832x1088", "1088x832"],
+    },
+    {
+      name: "duration",
+      type: "integer",
+      description: "Video duration in seconds. Currently fixed at 5.",
+      default: 5,
+    },
     {
       name: "prompt_extend",
       type: "boolean",
-      description: "Whether to extend the prompt",
-      default: true,
+      description: "Whether to enable prompt smart-rewrite.",
+    },
+    {
+      name: "seed",
+      type: "integer",
+      description: "Random seed for reproducibility (0–2147483647).",
     },
-    { name: "seed", type: "integer", description: "Random seed for reproducibility" },
     {
       name: "safety_filter",
       type: "boolean",
-      description: "Enable safety filtering",
-      default: true,
+      description: "Enable content safety filter. Default: enabled.",
     },
   ],
 };
diff --git a/packages/core/src/models/minimax/_builders.ts b/packages/core/src/models/minimax/_builders.ts
index 21ab7be..79506ca 100644
--- a/packages/core/src/models/minimax/_builders.ts
+++ b/packages/core/src/models/minimax/_builders.ts
@@ -19,7 +19,6 @@ export function buildSpeechRequestBody(params: Record<string, unknown>): Record<
   if (Object.keys(voiceSetting).length > 0) body.voice_setting = voiceSetting;
 
   const audioSetting: Record<string, unknown> = {};
-  if (params.output_format !== undefined) audioSetting.output_format = params.output_format;
   if (params.audio_format !== undefined) audioSetting.format = params.audio_format;
   if (params.sample_rate !== undefined) audioSetting.sample_rate = params.sample_rate;
   if (params.bitrate !== undefined) audioSetting.bitrate = params.bitrate;
@@ -29,6 +28,11 @@ export function buildSpeechRequestBody(params: Record<string, unknown>): Record<
     body.english_normalization = params.english_normalization;
   }
 
+  // output_format belongs at body root per upstream ExternalSpeechGenerationRequest
+  // schema (mule-router tasks/handlers/minimax/models/external.py:254). Nesting it
+  // under audio_setting causes upstream pydantic to silently drop it and default to HEX.
+  if (params.output_format !== undefined) body.output_format = params.output_format;
+
   return body;
 }
 
@@ -81,7 +85,13 @@ export const speechParameters: ModelParameter[] = [
     description:
       "Optimize for a specific language (e.g., zh, en, ja, ko, es, pt, fr, id, de, ru, it, ar, tr, uk, nl, vi, th, pl, ro, el, cs, fi, hi)",
   },
-  { name: "output_format", type: "string", description: "Output format", enum: ["url", "hex"] },
+  {
+    name: "output_format",
+    type: "string",
+    description:
+      "Output schema for audios[0]. 'url' → HTTPS download link (recommended). 'hex' → hex-encoded raw audio bytes (decode with `xxd -r -p > out.mp3`); the bytes are an MP3 with ID3 header regardless of --audio-format. Upstream MiniMax default: hex.",
+    enum: ["url", "hex"],
+  },
   {
     name: "audio_format",
     type: "string",
diff --git a/packages/core/tests/models.test.ts b/packages/core/tests/models.test.ts
index f606fb9..2288ccb 100644
--- a/packages/core/tests/models.test.ts
+++ b/packages/core/tests/models.test.ts
@@ -139,13 +139,54 @@ describe("models", () => {
       expect(endpoint?.resultKey).toBe("images");
     });
 
-    it("should include wan2.1-vace-plus with VACE functions", () => {
+    it("should include wan2.1-vace-plus aligned with VideoEditPayload union", () => {
       const endpoint = registry.get("alibaba/wan2.1-vace-plus", "generation");
       expect(endpoint).toBeDefined();
-      const funcParam = endpoint?.parameters.find((p) => p.name === "function");
+      if (!endpoint) return;
+      const params = endpoint.parameters;
+
+      // function enum: 5 new upstream-accepted values, no legacy values
+      const funcParam = params.find((p) => p.name === "function");
       expect(funcParam?.required).toBe(true);
-      expect(funcParam?.enum).toContain("outpainting");
-      expect(funcParam?.enum).toContain("inpainting");
+      expect(funcParam?.enum).toEqual(
+        expect.arrayContaining([
+          "image_reference",
+          "video_repainting",
+          "video_edit",
+          "video_extension",
+          "video_outpainting",
+        ]),
+      );
+      expect(funcParam?.enum).toHaveLength(5);
+
+      // negative_prompt removed (not in VideoEditBasePayload)
+      expect(params.find((p) => p.name === "negative_prompt")).toBeUndefined();
+
+      // ref_images_url renamed to images (array)
+      expect(params.find((p) => p.name === "ref_images_url")).toBeUndefined();
+      const images = params.find((p) => p.name === "images");
+      expect(images?.type).toBe("array");
+
+      // obj_or_bg retyped string → array
+      expect(params.find((p) => p.name === "obj_or_bg")?.type).toBe("array");
+
+      // mask_frame_id retyped string → integer
+      expect(params.find((p) => p.name === "mask_frame_id")?.type).toBe("integer");
+
+      // enum constraints from upstream Literal types
+      expect(params.find((p) => p.name === "mask_type")?.enum).toEqual(["tracking", "fixed"]);
+      expect(params.find((p) => p.name === "expand_mode")?.enum).toEqual([
+        "hull",
+        "bbox",
+        "orginal",
+      ]);
+      expect(params.find((p) => p.name === "size")?.enum).toEqual([
+        "1280x720",
+        "720x1280",
+        "960x960",
+        "832x1088",
+        "1088x832",
+      ]);
     });
   });
 
@@ -227,10 +268,29 @@ describe("models", () => {
         voice_id: "Charming_Lady",
         speed: 1.0,
         audio_format: "mp3",
+        output_format: "url",
       });
       expect(result?.prompt).toBe("Hello");
       expect(result?.voice_setting).toEqual({ voice_id: "Charming_Lady", speed: 1.0 });
       expect(result?.audio_setting).toEqual({ format: "mp3" });
+      // output_format must be at body root, NOT under audio_setting
+      expect(result?.output_format).toBe("url");
+    });
+
+    it("should not nest output_format under audio_setting (regression: upstream schema)", () => {
+      // Upstream ExternalSpeechGenerationRequest declares output_format at body root.
+      // Nesting it inside audio_setting causes pydantic to silently drop it → default HEX.
+      const speech = registry.get("minimax/speech-2.8-turbo", "generation");
+      const result = speech?.buildRequestBody?.({
+        prompt: "regression",
+        voice_id: "male-qn-qingse",
+        audio_format: "mp3",
+        output_format: "url",
+      });
+      const audioSetting = result?.audio_setting as Record<string, unknown> | undefined;
+      expect(audioSetting).toBeDefined();
+      expect(Object.keys(audioSetting ?? {})).not.toContain("output_format");
+      expect(result?.output_format).toBe("url");
     });
 
     it("should have custom buildRequestBody for music models", () => {