Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Runs on your computer
QECTOR Quantum Error Correction
Overview
Description from the maker (original English)
Local quantum error correction tools; decoder output verified against H c = s (mod 2).
PopNx MCP’s three pillars
These three are never merged into one score: opinions, measurements and popularity are different things.
- User voiceiNo reviews yetReviews open together with accounts in a later step
- Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
- UsageiVery new★ –
What you can do with it
We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.
- Connection: Runs on your computer
- Transport: stdio
- Category: Other
Install
Pick the AI app you use, then copy the settings.
Before you install
- Basic checks: 1 of 1 passed
- Runs on your computer with your user’s permissions (files, network, apps).
- The registry lists no key to fill in.
Which app do you use?
Pick your app above. We remember it, so next time the button says “Install in …”.
Download the maker’s .mcpb file
The link goes to the maker’s own file; we do not host or repackage it. Open the file and Claude Desktop installs it.
Run this in your terminal
Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.
Your choice stays on this device in a cookie; no account needed.
These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
What it can do
Runs on your computer; the tool list appears in your AI app after you install it.
Basic checksi
We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 9, 2026
- ✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account GuillaumeLessard, which owns the repo
- … Not checked yet
Still maintained
We have not read this repo from GitHub yet
- … Not checked yet
Has a licence
We have not read this repo from GitHub yet
- – Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
- – Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
- … Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints
Compared with others in Otheri
- More stars than 0% of the other 18704 servers in this category
- Published to the registry more recently than 28% of the other 18704 servers in this category
- Basic checks equal to or better than 100% of the other 18704 servers in this category
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
Common questions
Is QECTOR Quantum Error Correction safe?
It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.
What keys or codes does it need?
The registry does not list a required key, though some servers ask you to sign in on first use.
Does it run on my computer or in the cloud?
It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).
Is it still maintained?
The GitHub repo last changed –, and the latest version (1.0.6) reached the registry 3 months ago.
Which apps can use it?
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need MCPB on your computer.
What can I use instead?
In the same category: Spec Driven Development, Remote Desktop Commander, agentPickup
Alternatives
Servers in the same category from other makers, sorted by stars.
Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
Remote Desktop Commander
Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.
Runs in the cloud✓ desktopcommander.app
agentPickup
Find pickup shops near you, order, pay by card or USDC (x402), and get the QR to collect in person.
Computer or cloud
README from the maker
Open the README
Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.
QECTOR Claude Plugin 2.0.1
Air-gapped, schema-validated, audited quantum error correction for Claude Code and Claude Desktop, built on `qector-decoder-v3==1.0.1`.
Every correction returned by an MCP tool is checked against the parity relation H c = s (mod 2) before it leaves the process. Every request is validated against a JSON Schema 2020-12 input schema before any decoder code runs, and every response is validated against the tool's advertised output schema before it is written. The default server opens no listening socket, launches no process, verifies its own files at startup, and can keep a hash-chained audit log.
**1 secure MCP server (12 tools default, 41 in research profile) · 3
standalone servers · 11 commands · 5 agents · 28 skills · contract 2.0 ·
mcp1.30+ and 2.x · Python 3.10–3.13 · air-gapped by default**
Why 2.0.0
The 1.0.x line made claims its process could not enforce. 2.0.0 turns those claims into mechanisms and states what remains:
| 1.0.6 | 2.0.0 | |
|---|---|---|
| Network | "zero egress" in the docs; check_pypi=true opened a connection | in-process guard installed before the first MCP frame (defence in depth; host egress rule documented for a hard guarantee); PyPI check refused |
| Validation | SDK-dependent input check, no output check | own Draft 2020-12 validator both ways; 91 committed schema files |
| Integrity | none | INTEGRITY.json verified at startup, strict by default |
| Audit | none | optional hash-chained JSONL log |
| SDK | mcp==1.26.0 (3 CVEs), broke on mcp 2.x | mcp>=1.30,<3; same wire output on both generations |
| Release | three different trees labelled 1.0.6 | deterministic builder that refuses a dirty tree, hashed requirements.lock, per-archive manifest + RELEASE_COMMIT, Ed25519-signed manifests and SHA256SUMS, Sigstore log entry |
| Honesty about the wheel | not mentioned | native TLS client and billing endpoint disclosed in airgap_status and SECURITY.md |
| Wheel defects | color_code d=3 (1 check, no logicals) exposed as decodable; rotated_surface labelled distance d while a weight-2 error is undetectable | per-family health probe with a checked effective_distance (exact for graphlike codes via the matching graph's shortest odd-parity cycle, bounded enumeration otherwise; never the wheel's label); degenerate refused, weak warned on every result; a corrected rotated_surface_corrected family built by the plugin and verified at construction (mcp/qector_codes.py). 2.0.1 pins qector-decoder-v3==1.0.1, which fixes these families upstream; the probe now verifies every one at its label |
| Shipped bugs | sinter_task_template crashed on every call; DEM collapse ignored the 3rd+ mechanism | fixed, with regression tests |
Installation
Claude Code
claude plugin marketplace add GuillaumeLessard/qector-claude-pluginclaude plugin install qector@qector-tools
The plugin registers qector-secure (mcp/mcp_server_secure.py --profile safe, QECTOR_AIR_GAPPED=1). Interpreter resolution goes through scripts/qector-python (QECTOR_PYTHON → python3.13…python3.10 → python3 → python → well-known Homebrew / python.org / pyenv locations, 3.10–3.13), a POSIX sh script.
*Windows (Claude Code):* a plugin manifest has one command for every platform and a sh script is not a Win32 executable, so on native Windows the plugin's server starts only where sh is on PATH (Git for Windows with "Unix tools" selected, or WSL). Otherwise register the server once by hand with the Windows launcher, which also serves the hooks:
claude mcp add qector-secure -e QECTOR_AIR_GAPPED=1 -e QECTOR_INTEGRITY_STRICT=1 -e QECTOR_SILENT=1 -- cmd /c "<plugin root>\scripts\qector-python.cmd" "<plugin root>\mcp\mcp_server_secure.py" --profile safeThe Claude Desktop extension does not have this limitation: its manifest carries a win32 override that launches scripts/qector-python.ps1 through powershell.exe.
The hooks (hooks/hooks.json) run in shell form, which Claude Code executes with Git Bash on Windows; without Git for Windows they report an error on each session start and the (optional) usage log is not written. The server itself is unaffected.
Claude Desktop
Install qector-claude-desktop-2.0.1.mcpb (Settings → Extensions → Advanced → Install Extension). The bundle runs the same secure server in strict-integrity mode; the optional *Audit log directory* setting enables the hash-chained log. A platform-specific bundle with the runtime vendored into server/lib can be built with scripts/build_release.py --desktop --bundle-lib .
Air-gapped laboratory
See AIRGAP.md: build a wheelhouse on a connected host (scripts/build_wheelhouse.py), carry it with SHA256SUMS, run scripts/install_offline.sh / .ps1 on the lab machine, and apply a host egress rule.
From source
git clone https://github.com/GuillaumeLessard/qector-claude-plugin.gitcd qector-claude-plugin python -m pip install -r requirements.lock # exact tested closure (Python 3.10-3.13) QECTOR_SILENT=1 python scripts/qector_runtime_check.py
The tool surface
| Server | Entry point | Tools | Default |
|---|---|---|---|
qector-secure | mcp/mcp_server_secure.py --profile safe | 12 | ✅ Claude Code & Desktop |
qector-secure --profile research | same | 41 | opt-in |
qector-library | mcp/mcp_server_library.py | 8 | legacy |
qector-research | mcp/mcp_server_qector_bench.py | 29 | opt-in |
qector-admin | mcp/mcp_server_admin.py | 3 | opt-in, QECTOR_ADMIN_ENABLED=1 |
Control-plane tools of the secure server: airgap_status, integrity_check, schema_catalog, audit_log_status. Full contract in MCP_API.md; every schema in schemas/.
Verification gates
python scripts/release_validate.py # manifests, pins, disclosurespython scripts/validate_source.py # tree shape python scripts/export_schemas.py --check # schemas/ in sync with the servers python scripts/generate_integrity_manifest.py --check QECTOR_SILENT=1 python -m unittest discover -s tests -v # unit, contract and live stdio conformance tests python mcp/tests/test_mcp_stdio.py # 5 servers over real stdio ruff check . python scripts/build_release.py --all --signing-key && python scripts/validate_plugin_bundle.py python scripts/sign_release.py --verify dist --pubkey # see SECURITY.md
CI runs the suite on Python 3.10–3.13 against both mcp 1.x (patched) and mcp 2.x.
System requirements
| Component | Requirement |
|---|---|
| Python | 3.10 through 3.13 (the MCP SDK needs 3.10+; the decoder wheels stop at 3.13) |
| Platforms | Linux, macOS; Windows via the Desktop extension, WSL, or Git for Windows (see Installation) |
| Backend | qector-decoder-v3==1.0.1 (Rust / PyO3 wheel) |
| MCP SDK | mcp>=1.30,<3 |
| Validation | jsonschema>=4.18 |
| Network | none required; the plugin's only network-capable option (PyPI check) is refused in air-gapped mode, and the wheel's native TLS client is disclosed, never called (see Security) |
Security and privacy
SECURITY.md (trust boundaries, tool classification, startup gates, the wheel's native network surface), THREAT_MODEL.md (assets, actors, controls, residual risks), PRIVACY.md, AIRGAP.md. Vulnerability reports: .
Documentation
| Document | Path |
|---|---|
| Ten-minute reviewer checklist | REVIEWER_GUIDE.md |
| MCP API contract 2.0 | MCP_API.md |
| Air-gapped deployment | AIRGAP.md |
| Threat model | THREAT_MODEL.md |
| Anthropic collaboration proposal | ANTHROPIC_COLLABORATION_PROPOSAL.md |
| Release notes | RELEASE_NOTES_v2.0.1.md · RELEASE_NOTES_v2.0.0.md · CHANGELOG.md |
| Upstream wheel defect report (rotated surface distance) | docs/UPSTREAM_ISSUE_rotated_surface_distance.md · scripts/probe_wheel_distance.py |
| User manual | docs/User_Manual.md |
| Desktop setup | CLAUDE_DESKTOP.md |
| Validation gates | RELEASE_VALIDATION.md |
License
Proprietary. Copyright © 2026 Guillaume Lessard / iD01t Productions. See LICENSE.md. The qector-decoder-v3 backend is free for personal, academic, educational and non-commercial research; commercial use requires a licence from qector.store/pricing.
Website https://www.qector.store · Licensing, support and security disclosure