QECTOR DECODER WORKBENCH v3.5.1 Devlog

QECTOR Decoder Workbench v3.5.1 is now available. Backend: qector-decoder-v3==0.6.9.

QECTOR Decoder Workbench is a professional desktop application for quantum error correction research, evaluation, and documentation. It ships with 13 decoder algorithms, 9 code families (surface, toric, heavy hex, bicycle qLDPC, and more), and a 47 tool Model Context Protocol (MCP) server for AI agents. It's distributed as a portable Windows executable, no install required, with a full GUI, command line, and headless MCP mode.

Download

QectorWorkbench Portable.exe 

Fully portable, no install required.

Quick Start

1. Download and run the portable .exe directly.
2. Double click QectorWorkbench Portable.exe.

MCP Server (AI agents): QectorWorkbench Portable.exe --mcp

Key Features

• Interactive GUI (Code Explorer, Decoder Lab, Benchmark Suite, Batch/Streaming, Diagnostics, Documentation Studio) 

• 13 decoders including exact Blossom MWPM, Union Find family, BP OSD, belief matching, auto router, hybrid cascade 

• 9 code families (graph like and qLDPC) 

• Publication grade charts and multi format export (MD, JSON, HTML, LaTeX, PDF, SVG) 

• 47 tool MCP server (stdio JSON RPC 2.0) 

• Automatic backend provisioning from PyPI on first run (subsequent runs fully offline) 

• Self healing decoder engine

Licensing

Workbench (this application). See EULA.txt. Royalty free for any purpose, including commercial, as long as QECTOR notices are retained.

Backend (qector-decoder-v3). Separately licensed. Free for personal, academic, and non commercial research. Commercial use requires a paid license → qector.store/pricing

Documentation

Included in the download:

• README.txt. Full package overview 

• EULA.txt. End User License Agreement 

• Windows user manual 

• QECTOR_API_Reference.md / .pdf 

• QECTOR_MCP_Integration_Guide.pdf 

• QECTOR_Quick_Start_Guide.pdf 

• QECTOR_LLM_Manual.json. Machine readable agent guide

Citation

Lessard, Guillaume. QECTOR Decoder v3: Rust/Python Quantum Error Correction Decoding Platform. 

Version 0.6.9. 2026. https://www.qector.store. ORCID: 0009-0000-3465-3753

Related

PyPI: qector-decoder-v3 Website and commercial licensing: qector.store

Thank you to everyone testing and following QECTOR Decoder Workbench development.