QECTOR Quantum Error Correction MCP server

QECTOR Claude Plugin

Verified quantum error correction for Claude. Local, deterministic, and mathematically guaranteed on every machine you work on.

QECTOR integrates the published qector-decoder-v3==1.0.0 engine with Claude Code and Claude Desktop, turning both into a production grade QEC engineering environment. Every correction returned by an MCP server is verified against the parity relation H c = s (mod 2) before it leaves the process, every claim carries a machine checkable provenance class, and the default configuration performs no network request of any kind.

**4 MCP servers · 8 stable / 29 research / 3 admin tools · 11 commands

· 5 agents · 28 skills · zero egress by default**

Latest release — v1.0.6 · Claude.ai

marketplace compliance (launchers to scripts/, canonical manifests),

environment-agnostic /qec-setup, deterministic artifacts. See the

release announcement.

Why v1.0.6

Version 1.0.6 completes the portability and compliance story that 1.0.5 started, then layers on marketplace correctness and universal setup. Two problems drove it: modern operating systems no longer hand you Python on a predictable command name (macOS, Debian, Ubuntu, and Fedora ship python3 without bare python, while Windows adds its own resolver quirks), and the claude.ai marketplace approval pipeline rejects plugins that ship executables in bin/. This release retires both failure classes, permanently.

1. A universal, compliant launcher ships inside every artifact.

carry scripts/qector-python (POSIX sh) and scripts/qector-python.cmd (Windows). They live in scripts/, not bin/: claude.ai-hosted plugins may not ship bin/ executables because they land on PATH without ever appearing on the admin approval surface. A validator now hard-fails any build that reintroduces bin/.

• The plugin archive, the source distribution, and the Desktop bundle all

wins first, then python3, then python, with the Windows py launcher tried ahead of them all.

• Resolution is governed, not guessed. An administrator pinned interpreter

through 3.13 executes, matching the published native wheel matrix; an out of range machine receives precise remediation guidance instead of a deep import crash.

• The supported window is enforced, not documented. Only Python 3.9

absolute interpreter path and every launcher honors it above discovery.

• Pinning is first class on both surfaces. Set QECTOR_PYTHON to an

2. The marketplace surface is canonical.

Both plugin.json and marketplace.json use only documented fields and a relative same-repo plugin source — the form every official marketplace uses and the only form every sync path can resolve. The Desktop MCPB carries a win32 platform override so Windows always selects the .cmd launcher.

3. Setup works in every environment.

/qec-setup detects sandboxed and remote environments (claude.ai code execution, Cowork, containers without a project checkout) and falls back to native diagnostics instead of dead ending on a missing local script — and it reports honestly which path it used.

Platform support

Local stdio cannot reach web or mobile by architecture; the hosted connector is the engineered path to those surfaces and lands in 1.1.x.

Installation

Prerequisites

Shortened. The full README is on GitHub.