Merge branch 'main' into docs/improve-readme

docs/content/docs/agent-sdk/supported-agents/computer-use-agents.mdx

@@ -73,6 +73,17 @@ async for _ in agent.run("Open Firefox and navigate to github.com"):
     pass
 ```
 
+## Qwen3 VL
+
+Qwen3 VL family:
+- `openrouter/qwen/qwen3-vl-235b-a22b-instruct`
+
+```python
+agent = ComputerAgent("openrouter/qwen/qwen3-vl-235b-a22b-instruct", tools=[computer])
+async for _ in agent.run("Open Firefox and navigate to github.com"):
+    pass
+```
+
 ## UI-TARS 1.5
 
 Unified vision-language model for computer-use:

libs/python/agent/.bumpversion.cfg

@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 0.4.32
+current_version = 0.4.35
 commit = True
 tag = True
 tag_name = agent-v{new_version}

libs/python/agent/agent/loops/__init__.py

@@ -15,6 +15,7 @@ from . import (
     omniparser,
     openai,
     opencua,
+    qwen,
     uitars,
 )
 
@@ -31,4 +32,5 @@ __all__ = [
     "holo",
     "moondream3",
     "gemini",
+    "qwen",
 ]

libs/python/agent/agent/loops/qwen.py

@@ -0,0 +1,510 @@
+"""
+Qwen3-VL agent loop implementation using litellm with function/tool calling.
+- Passes a ComputerUse tool schema to acompletion
+- Converts between Responses items and completion messages using helpers
+"""
+
+from __future__ import annotations
+
+import json
+import re
+from typing import Any, Dict, List, Optional, Tuple
+
+import litellm
+from litellm.responses.litellm_completion_transformation.transformation import (
+    LiteLLMCompletionResponsesConfig,
+)
+
+from ..decorators import register_agent
+from ..loops.base import AsyncAgentConfig
+from ..responses import (
+    convert_completion_messages_to_responses_items,
+    convert_responses_items_to_completion_messages,
+)
+from ..types import AgentCapability
+
+# ComputerUse tool schema (OpenAI function tool format)
+QWEN3_COMPUTER_TOOL: Dict[str, Any] = {
+    "type": "function",
+    "function": {
+        "name": "computer",
+        "description": (
+            "Use a mouse and keyboard to interact with a computer, and take screenshots.\n"
+            "* This is an interface to a desktop GUI. You do not have access to a terminal or applications menu. You must click on desktop icons to start applications.\n"
+            "* Some applications may take time to start or process actions, so you may need to wait and take successive screenshots to see the results of your actions. E.g. if you click on Firefox and a window doesn't open, try wait and taking another screenshot.\n"
+            "* The screen's resolution is 1000x1000.\n"
+            "* Whenever you intend to move the cursor to click on an element like an icon, you should consult a screenshot to determine the coordinates of the element before moving the cursor.\n"
+            "* If you tried clicking on a program or link but it failed to load, even after waiting, try adjusting your cursor position so that the tip of the cursor visually falls on the element that you want to click.\n"
+            "* Make sure to click any buttons, links, icons, etc with the cursor tip in the center of the element. Don't click boxes on their edges."
+        ),
+        "parameters": {
+            "type": "object",
+            "properties": {
+                "action": {
+                    "description": "The action to perform.",
+                    "enum": [
+                        "key",
+                        "type",
+                        "mouse_move",
+                        "left_click",
+                        "left_click_drag",
+                        "right_click",
+                        "middle_click",
+                        "double_click",
+                        "triple_click",
+                        "scroll",
+                        "hscroll",
+                        "screenshot",
+                        "wait",
+                        # "terminate",
+                        # "answer",
+                    ],
+                    "type": "string",
+                },
+                "keys": {
+                    "description": "Required only by action=key.",
+                    "type": "array",
+                    "items": {"type": "string"},
+                },
+                "text": {
+                    "description": "Required only by action=type and action=answer.",
+                    "type": "string",
+                },
+                "coordinate": {
+                    "description": "(x, y): Pixel coordinates from top-left.",
+                    "type": "array",
+                    "items": {"type": ["number", "integer"]},
+                    "minItems": 2,
+                    "maxItems": 2,
+                },
+                "pixels": {
+                    "description": "Scroll amount. Positive=up, negative=down. For scroll/hscroll.",
+                    "type": "number",
+                },
+                "time": {
+                    "description": "Seconds to wait (action=wait).",
+                    "type": "number",
+                },
+                # "status": {
+                #     "description": "Task status (action=terminate).",
+                #     "type": "string",
+                #     "enum": ["success", "failure"],
+                # },
+            },
+            "required": ["action"],
+        },
+    },
+}
+
+
+def _build_nous_system(functions: List[Dict[str, Any]]) -> Optional[Dict[str, Any]]:
+    """Use qwen-agent NousFnCallPrompt to generate a system message embedding tool schema."""
+    try:
+        from qwen_agent.llm.fncall_prompts.nous_fncall_prompt import (
+            ContentItem as NousContentItem,
+        )
+        from qwen_agent.llm.fncall_prompts.nous_fncall_prompt import (
+            Message as NousMessage,
+        )
+        from qwen_agent.llm.fncall_prompts.nous_fncall_prompt import (
+            NousFnCallPrompt,
+        )
+    except ImportError:
+        raise ImportError(
+            "qwen-agent not installed. Please install it with `pip install cua-agent[qwen]`."
+        )
+    msgs = NousFnCallPrompt().preprocess_fncall_messages(
+        messages=[
+            NousMessage(
+                role="system", content=[NousContentItem(text="You are a helpful assistant.")]
+            )
+        ],
+        functions=functions,
+        lang="en",
+    )
+    sys = msgs[0].model_dump()
+    # Convert qwen-agent structured content to OpenAI-style content list
+    content = [{"type": "text", "text": c["text"]} for c in sys.get("content", [])]
+    return {"role": "system", "content": content}
+
+
+def _parse_tool_call_from_text(text: str) -> Optional[Dict[str, Any]]:
+    """Extract JSON object within <tool_call>...</tool_call> from model text."""
+    m = re.search(r"<tool_call>\s*(\{[\s\S]*?\})\s*</tool_call>", text)
+    if not m:
+        return None
+    try:
+        return json.loads(m.group(1))
+    except Exception:
+        return None
+
+
+async def _unnormalize_coordinate(args: Dict[str, Any], dims: Tuple[int, int]) -> Dict[str, Any]:
+    """Coordinates appear in 0..1000 space, scale to actual screen size using dims if provided."""
+    coord = args.get("coordinate")
+    if not coord or not isinstance(coord, (list, tuple)) or len(coord) < 2:
+        return args
+    x, y = float(coord[0]), float(coord[1])
+    width, height = float(dims[0]), float(dims[1])
+    x_abs = max(0.0, min(width, (x / 1000.0) * width))
+    y_abs = max(0.0, min(height, (y / 1000.0) * height))
+    args = {**args, "coordinate": [round(x_abs), round(y_abs)]}
+    return args
+
+
+def convert_qwen_tool_args_to_computer_action(args: Dict[str, Any]) -> Optional[Dict[str, Any]]:
+    """
+    Convert Qwen computer tool arguments to the Computer Calls action schema.
+
+    Qwen (example):
+        {"action": "left_click", "coordinate": [114, 68]}
+
+    Target (example):
+        {"action": "left_click", "x": 114, "y": 68}
+
+    Other mappings:
+    - right_click, middle_click, double_click (triple_click -> double_click)
+    - mouse_move -> { action: "move", x, y }
+    - key -> { action: "keypress", keys: [...] }
+    - type -> { action: "type", text }
+    - scroll/hscroll -> { action: "scroll", scroll_x, scroll_y, x, y }
+    - wait -> { action: "wait" }
+    - terminate/answer are not direct UI actions; return None for now
+    """
+    if not isinstance(args, dict):
+        return None
+
+    action = args.get("action")
+    if not isinstance(action, str):
+        return None
+
+    # Coordinates helper
+    coord = args.get("coordinate")
+    x = y = None
+    if isinstance(coord, (list, tuple)) and len(coord) >= 2:
+        try:
+            x = int(round(float(coord[0])))
+            y = int(round(float(coord[1])))
+        except Exception:
+            x = y = None
+
+    # Map actions
+    a = action.lower()
+    if a in {"left_click", "right_click", "middle_click", "double_click"}:
+        if x is None or y is None:
+            return None
+        return {"action": a, "x": x, "y": y}
+    if a == "triple_click":
+        # Approximate as double_click
+        if x is None or y is None:
+            return None
+        return {"action": "double_click", "x": x, "y": y}
+    if a == "mouse_move":
+        if x is None or y is None:
+            return None
+        return {"action": "move", "x": x, "y": y}
+    if a == "key":
+        keys = args.get("keys")
+        if isinstance(keys, list) and all(isinstance(k, str) for k in keys):
+            return {"action": "keypress", "keys": keys}
+        return None
+    if a == "type":
+        text = args.get("text")
+        if isinstance(text, str):
+            return {"action": "type", "text": text}
+        return None
+    if a in {"scroll", "hscroll"}:
+        pixels = args.get("pixels") or 0
+        try:
+            pixels_val = int(round(float(pixels)))
+        except Exception:
+            pixels_val = 0
+        scroll_x = pixels_val if a == "hscroll" else 0
+        scroll_y = pixels_val if a == "scroll" else 0
+        # Include cursor position if available (optional)
+        out: Dict[str, Any] = {"action": "scroll", "scroll_x": scroll_x, "scroll_y": scroll_y}
+        if x is not None and y is not None:
+            out.update({"x": x, "y": y})
+        return out
+    if a == "wait":
+        return {"action": "wait"}
+
+    # Non-UI or terminal actions: terminate/answer -> not mapped here
+    return None
+
+
+@register_agent(models=r"(?i).*qwen.*", priority=-1)
+class Qwen3VlConfig(AsyncAgentConfig):
+    async def predict_step(
+        self,
+        messages: List[Dict[str, Any]],
+        model: str,
+        tools: Optional[List[Dict[str, Any]]] = None,
+        max_retries: Optional[int] = None,
+        stream: bool = False,
+        computer_handler=None,
+        use_prompt_caching: Optional[bool] = False,
+        _on_api_start=None,
+        _on_api_end=None,
+        _on_usage=None,
+        _on_screenshot=None,
+        **kwargs,
+    ) -> Dict[str, Any]:
+        # Build messages using NousFnCallPrompt system with tool schema in text
+        # Start with converted conversation (images/text preserved)
+        converted_msgs = convert_responses_items_to_completion_messages(
+            messages,
+            allow_images_in_tool_results=False,
+        )
+
+        # Prepend Nous-generated system if available
+        nous_system = _build_nous_system([QWEN3_COMPUTER_TOOL["function"]])
+        completion_messages = ([nous_system] if nous_system else []) + converted_msgs
+
+        # If there is no screenshot in the conversation, take one now and inject it.
+        # Also record a pre_output_items assistant message to reflect action.
+        def _has_any_image(msgs: List[Dict[str, Any]]) -> bool:
+            for m in msgs:
+                content = m.get("content")
+                if isinstance(content, list):
+                    for p in content:
+                        if isinstance(p, dict) and p.get("type") == "image_url":
+                            return True
+            return False
+
+        pre_output_items: List[Dict[str, Any]] = []
+        if not _has_any_image(completion_messages):
+            if computer_handler is None or not hasattr(computer_handler, "screenshot"):
+                raise RuntimeError(
+                    "No screenshots present and computer_handler.screenshot is not available."
+                )
+            screenshot_b64 = await computer_handler.screenshot()
+            if not screenshot_b64:
+                raise RuntimeError("Failed to capture screenshot from computer_handler.")
+            # Inject a user message with the screenshot so the model can see current context
+            completion_messages.append(
+                {
+                    "role": "user",
+                    "content": [
+                        {
+                            "type": "image_url",
+                            "image_url": {"url": f"data:image/png;base64,{screenshot_b64}"},
+                        },
+                        {"type": "text", "text": "Current screen"},
+                    ],
+                }
+            )
+            # Add assistant message to outputs to reflect the action, similar to composed_grounded.py
+            pre_output_items.append(
+                {
+                    "type": "message",
+                    "role": "assistant",
+                    "content": [
+                        {
+                            "type": "text",
+                            "text": "Taking a screenshot to see the current computer screen.",
+                        }
+                    ],
+                }
+            )
+
+        # Smart-resize all screenshots and attach min/max pixel hints. Fail fast if deps missing.
+        # Also record the last resized width/height to unnormalize coordinates later.
+        last_rw: Optional[int] = None
+        last_rh: Optional[int] = None
+        MIN_PIXELS = 3136
+        MAX_PIXELS = 12845056
+        try:
+            import base64
+            import io
+
+            from PIL import Image  # type: ignore
+            from qwen_vl_utils import smart_resize  # type: ignore
+        except Exception:
+            raise ImportError(
+                "qwen-vl-utils not installed. Please install it with `pip install cua-agent[qwen]`."
+            )
+
+        for msg in completion_messages:
+            content = msg.get("content")
+            if not isinstance(content, list):
+                continue
+            for part in content:
+                if isinstance(part, dict) and part.get("type") == "image_url":
+                    url = ((part.get("image_url") or {}).get("url")) or ""
+                    # Expect data URL like data:image/png;base64,<b64>
+                    if url.startswith("data:") and "," in url:
+                        b64 = url.split(",", 1)[1]
+                        img_bytes = base64.b64decode(b64)
+                        im = Image.open(io.BytesIO(img_bytes))
+                        h, w = im.height, im.width
+                        rh, rw = smart_resize(
+                            h, w, factor=32, min_pixels=MIN_PIXELS, max_pixels=MAX_PIXELS
+                        )
+                        # Attach hints on this image block
+                        part["min_pixels"] = MIN_PIXELS
+                        part["max_pixels"] = MAX_PIXELS
+                        last_rw, last_rh = rw, rh
+
+        api_kwargs: Dict[str, Any] = {
+            "model": model,
+            "messages": completion_messages,
+            "max_retries": max_retries,
+            "stream": stream,
+            **{k: v for k, v in kwargs.items()},
+        }
+        if use_prompt_caching:
+            api_kwargs["use_prompt_caching"] = use_prompt_caching
+
+        if _on_api_start:
+            await _on_api_start(api_kwargs)
+
+        response = await litellm.acompletion(**api_kwargs)
+
+        if _on_api_end:
+            await _on_api_end(api_kwargs, response)
+
+        usage = {
+            **LiteLLMCompletionResponsesConfig._transform_chat_completion_usage_to_responses_usage(  # type: ignore
+                response.usage
+            ).model_dump(),
+            "response_cost": response._hidden_params.get("response_cost", 0.0),
+        }
+        if _on_usage:
+            await _on_usage(usage)
+
+        # Parse tool call from text; then convert to responses items via fake tool_calls
+        resp_dict = response.model_dump()  # type: ignore
+        choice = (resp_dict.get("choices") or [{}])[0]
+        content_text = ((choice.get("message") or {}).get("content")) or ""
+        tool_call = _parse_tool_call_from_text(content_text)
+
+        output_items: List[Dict[str, Any]] = []
+        if tool_call and isinstance(tool_call, dict):
+            fn_name = tool_call.get("name") or "computer"
+            raw_args = tool_call.get("arguments") or {}
+            # Unnormalize coordinates to actual screen size using last resized dims
+            if last_rw is None or last_rh is None:
+                raise RuntimeError(
+                    "No screenshots found to derive dimensions for coordinate unnormalization."
+                )
+            args = await _unnormalize_coordinate(raw_args, (last_rw, last_rh))
+
+            # Build an OpenAI-style tool call so we can reuse the converter
+            fake_cm = {
+                "role": "assistant",
+                "tool_calls": [
+                    {
+                        "type": "function",
+                        "id": "call_0",
+                        "function": {
+                            "name": fn_name,
+                            "arguments": json.dumps(args),
+                        },
+                    }
+                ],
+            }
+            output_items.extend(convert_completion_messages_to_responses_items([fake_cm]))
+        else:
+            # Fallback: just return assistant text
+            fake_cm = {"role": "assistant", "content": content_text}
+            output_items.extend(convert_completion_messages_to_responses_items([fake_cm]))
+
+        # Prepend any pre_output_items (e.g., simulated screenshot-taking message)
+        return {"output": (pre_output_items + output_items), "usage": usage}
+
+    def get_capabilities(self) -> List[AgentCapability]:
+        return ["step"]
+
+    async def predict_click(
+        self, model: str, image_b64: str, instruction: str, **kwargs
+    ) -> Optional[Tuple[int, int]]:
+        """
+        Predict click coordinates using Qwen3-VL via litellm.acompletion.
+
+        Only exposes a reduced tool schema with left_click to bias model to output a single click.
+        Returns (x, y) absolute pixels when screen dimensions can be obtained; otherwise normalized 0..1000 integers.
+        """
+        # Reduced tool
+        reduced_tool = {
+            "type": "function",
+            "function": {
+                **QWEN3_COMPUTER_TOOL["function"],
+                "parameters": {
+                    "type": "object",
+                    "properties": {
+                        "action": {"type": "string", "enum": ["left_click"]},
+                        "coordinate": {
+                            "description": "(x, y) in 0..1000 reference space",
+                            "type": "array",
+                            "items": {"type": ["number", "integer"]},
+                            "minItems": 2,
+                            "maxItems": 2,
+                        },
+                    },
+                    "required": ["action", "coordinate"],
+                },
+            },
+        }
+
+        # Build Nous system (lazy import inside helper already raises clear guidance if missing)
+        nous_system = _build_nous_system([reduced_tool["function"]])
+
+        # Pre-process using smart_resize
+        min_pixels = 3136
+        max_pixels = 12845056
+        try:
+            # Lazy import to avoid hard dependency
+            import base64
+            import io
+
+            # If PIL is available, estimate size from image to derive smart bounds
+            from PIL import Image
+            from qwen_vl_utils import smart_resize  # type: ignore
+
+            img_bytes = base64.b64decode(image_b64)
+            im = Image.open(io.BytesIO(img_bytes))
+            h, w = im.height, im.width
+            # Qwen notebook suggests factor=32 and a wide min/max range
+            rh, rw = smart_resize(h, w, factor=32, min_pixels=min_pixels, max_pixels=max_pixels)
+        except Exception:
+            raise ImportError(
+                "qwen-vl-utils not installed. Please install it with `pip install cua-agent[qwen]`."
+            )
+
+        messages = []
+        if nous_system:
+            messages.append(nous_system)
+        image_block: Dict[str, Any] = {
+            "type": "image_url",
+            "image_url": {"url": f"data:image/png;base64,{image_b64}"},
+            "min_pixels": min_pixels,
+            "max_pixels": max_pixels,
+        }
+        # Single user message with image and instruction, matching OpenAI-style content blocks
+        messages.append(
+            {
+                "role": "user",
+                "content": [
+                    image_block,
+                    {"type": "text", "text": instruction},
+                ],
+            }
+        )
+
+        api_kwargs: Dict[str, Any] = {
+            "model": model,
+            "messages": messages,
+            **{k: v for k, v in kwargs.items()},
+        }
+        response = await litellm.acompletion(**api_kwargs)
+        resp = response.model_dump()  # type: ignore
+        choice = (resp.get("choices") or [{}])[0]
+        content_text = ((choice.get("message") or {}).get("content")) or ""
+        tool_call = _parse_tool_call_from_text(content_text) or {}
+        args = tool_call.get("arguments") or {}
+        args = await _unnormalize_coordinate(args, (rh, rw))
+        coord = args.get("coordinate")
+        if isinstance(coord, (list, tuple)) and len(coord) >= 2:
+            return int(coord[0]), int(coord[1])
+        return None

libs/python/agent/pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "pdm.backend"
 
 [project]
 name = "cua-agent"
-version = "0.4.34"
+version = "0.4.35"
 description = "CUA (Computer Use) Agent for AI-driven computer interaction"
 readme = "README.md"
 authors = [
@@ -29,6 +29,11 @@ requires-python = ">=3.12"
 [project.optional-dependencies]
 openai = []
 anthropic = []
+qwen = [
+    "qwen-vl-utils",
+    "qwen-agent",
+    "Pillow>=10.0.0",
+]
 omni = [
     "cua-som>=0.1.0,<0.2.0",
 ]
@@ -99,6 +104,10 @@ all = [
     "hud-python==0.4.52",
     # gemini requirements
     "google-genai>=1.41.0",
+    # qwen requirements
+    "qwen-vl-utils",
+    "qwen-agent",
+    "Pillow>=10.0.0",
 ]
 
 [tool.uv]

uv.lock

@@ -1,6 +1,6 @@
 version = 1
-revision = 3
-requires-python = ">=3.12"
+revision = 2
+requires-python = ">=3.12, <3.14"
 resolution-markers = [
     "python_full_version >= '3.14' and sys_platform == 'win32'",
     "python_full_version == '3.13.*' and sys_platform == 'win32'",
@@ -445,6 +445,35 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/f8/aa/5082412d1ee302e9e7d80b6949bc4d2a8fa1149aaab610c5fc24709605d6/authlib-1.6.5-py2.py3-none-any.whl", hash = "sha256:3e0e0507807f842b02175507bdee8957a1d5707fd4afb17c32fb43fee90b6e3a", size = 243608, upload-time = "2025-10-02T13:36:07.637Z" },
 ]
 
+[[package]]
+name = "av"
+version = "16.0.1"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/15/c3/fd72a0315bc6c943ced1105aaac6e0ec1be57c70d8a616bd05acaa21ffee/av-16.0.1.tar.gz", hash = "sha256:dd2ce779fa0b5f5889a6d9e00fbbbc39f58e247e52d31044272648fe16ff1dbf", size = 3904030, upload-time = "2025-10-13T12:28:51.082Z" }
+wheels = [
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 version = "2.17.0"
@@ -1064,6 +1093,11 @@ opencua-hf = [
     { name = "torch" },
     { name = "transformers" },
 ]
+qwen = [
+    { name = "pillow" },
+    { name = "qwen-agent" },
+    { name = "qwen-vl-utils" },
+]
 ui = [
     { name = "gradio" },
     { name = "python-dotenv" },
@@ -1106,10 +1140,13 @@ requires-dist = [
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     { name = "mlx-vlm", marker = "sys_platform == 'darwin' and extra == 'uitars-mlx'", specifier = ">=0.1.27" },
+    { name = "pillow", marker = "extra == 'qwen'", specifier = ">=10.0.0" },
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     { name = "python-dotenv", marker = "extra == 'ui'", specifier = ">=1.0.1" },
+    { name = "qwen-agent", marker = "extra == 'qwen'" },
+    { name = "qwen-vl-utils", marker = "extra == 'qwen'" },
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@@ -1177,7 +1214,7 @@ provides-extras = ["lume", "lumier", "ui", "all"]
 
 [[package]]
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-version = "0.1.24"
+version = "0.1.25"
 source = { editable = "libs/python/computer-server" }
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 version = "4.2.0"
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 ]
 
+[[package]]
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+version = "0.0.31"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
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+    { name = "dotenv" },
+    { name = "eval-type-backport" },
+    { name = "json5" },
+    { name = "jsonlines" },
+    { name = "jsonschema" },
+    { name = "openai" },
+    { name = "pillow" },
+    { name = "pydantic" },
+    { name = "requests" },
+    { name = "tiktoken" },
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+    { name = "packaging" },
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