OSWorld-MCP

# OSWorld-MCP: Benchmarking MCP Tool Invocation in Computer-Use Agents ## 🔔 Updates **2026-05-13:** You Might also be interested: **ToolCUA: Towards Optimal GUI-Tool Path Orchestration for Computer Use Agents**.  **2026-05-09:** Fixed bugs in LibreOffice MCP tools. New model results added: Kimi-K2.5, Gemini-3.1-Pro, Claude-4.5-Sonnet, and Qwen3.5-Plus. **2026-01-26:** OSWorld-MCP is accepted to **ICLR 2026**! 🎉 **2025-10-28:** We released our paper and project page! 🎉 📄 [Read the Paper](https://arxiv.org/abs/2510.24563) &nbsp;|&nbsp; 🌐 [Visit the Project Page](https://osworld-mcp.github.io) --- ## 📑 Overview & Key Highlights OSWorld-MCP is a comprehensive and fair benchmark for evaluating computer-use agents in real-world scenarios. It jointly measures **Model Context Protocol (MCP)** tool invocation capabilities, **graphical user interface (GUI)** operation skills, and **decision-making** performance. Designed as an extension of **OSWorld**, it significantly improves realism, balance, and comparability in evaluation. **Key Features & Findings** - **158 validated MCP tools**, spanning **7 common applications** (LibreOffice Writer, Calc, Impress, VS Code, Google Chrome, VLC, OS utilities). Among them, **25 distractor tools** for robustness testing - **250 tool-beneficial tasks** → 69% of benchmark tasks benefit from MCP tools - Multi-round tool invocation possible, posing real decision-making challenges - **MCP tools boost model accuracy & efficiency** — e.g., OpenAI o3: 8.3% → 17.6% (15 steps) - Highest observed Tool Invocation Rate (**TIR**) = 33.3% (Claude-4-Sonnet, 50 steps) → indicating ample room for improvement - MCP tools improve agent metrics - Higher tool invocation correlates with higher accuracy - Combining tools introduces significant challenges **Architecture Overview**  *Figure: OSWorld-MCP evaluation framework integrating GUI actions and MCP tool invocations.* --- ## ⚙️ Installation & Usage ### 1️⃣ Preparation: Code Setup ```bash # Clone OSWorld base repo git clone https://github.com/xlang-ai/OSWorld.git # Clone OSWorld-MCP git clone https://github.com/X-PLUG/OSWorld-MCP.git ``` Integrate **OSWorld-MCP** files into OSWorld to enable MCP support. --- ### 2️⃣ Preparation: Docker Environment 1. Copy MCP files into `/home` inside Docker: ``` /home/ └── mcp_server/ └── osworld_mcp_client.py ``` 2. Install dependencies: ```bash pip install -r requirements.txt ``` 3. Install [Node.js](https://nodejs.org/en/download/) 4. Launch MCP server: ```bash cd mcp_server bash debug_server.sh ``` A successful launch opens the local MCP debug UI in your browser. --- ### 3️⃣ Running Evaluation Example: Evaluate **Claude 4 Sonnet** (15 steps): ```bash python run_multienv_e2e.py \ --api_url <your_api_url> \ --api_key <your_api_key> \ --model 'claude-sonnet-4-20250514-thinking' \ --test_all_meta_path 'evaluation_examples/test_all.json' \ --num_envs 1 \ --action_space mcp \ --max_steps 15 \ --max_trajectory_length 15 ``` --- ## 📐 Key Metrics 1. **Task Accuracy (Acc)** — % of tasks successfully completed. 2. **Tool Invocation Rate (TIR)** — correct decisions to use a tool or not. 3. **Average Completion Steps (ACS)** — average number of actions per completed task. --- ## 📊 Leaderboard (Sorted by Accuracy) 🔗 **Live Leaderboard:** [osworld-mcp.github.io](https://osworld-mcp.github.io) **Max Steps: 15** | Model / Agent | Acc | TIR | ACS | |----------------------|----------|-----------------------------|-----------------------------| | Agent-S2.5 | 42.1 | 30.0 | 10.0 | | Claude-4-Sonnet | 36.1 | 27.4 | 10.5 | | Qwen3-VL | 32.8 | 21.5 | 10.0 | | Seed1.5-VL | 30.7 | 21.0 | 10.1 | | OpenAI o3 | 17.6 | 11.6 | 11.9 | | Gemini-2.5-Pro | 17.4 | 12.2 | 11.6 | | Qwen2.5-VL | 14.5 | 10.1 | 14.0 | **Max Steps: 50** | Model / Agent | Acc | TIR | ACS | |----------------------|----------|-------|-------| | Agent-S2.5 | 49.5 | 35.3 | 17.0 | | Claude-4-Sonnet | 45.0 | 33.3 | 20.0 | | Qwen3-VL | 39.5 | 26.1 | 18.6 | | Seed1.5-VL | 38.2 | 25.1 | 22.3 | | Gemini-2.5-Pro | 25.7 | 16.8 | 31.0 | | OpenAI o3 | 24.1 | 16.0 | 33.0 | | Qwen2.5-VL | 15.6 | 9.3 | 39.0 | --- ## 📚 Citation ```bibtex @article{jia2025osworldmcp, title={OSWorld-MCP: Benchmarking MCP Tool Invocation in Computer-Use Agents}, author={Jia, Hongrui and Liao, Jitong and Zhang, Xi and Xu, Haiyang and Xie, Tianbao and Jiang, Chaoya and Yan, Ming and Liu, Si and Ye, Wei and Huang, Fei}, year={2025}, journal={arXiv preprint arXiv:2510.24563} } ```