graphix-mbqc

graphix-mbqc is a skill for Claude Code, Codex from xi-zhao/OpenQuantum. It costs 45 tokens per session (890 once invoked), scanned A, original, MIT.

A local tool that converts supported quantum circuits into measurement-based quantum computing (MBQC) patterns and simulates their adaptive measurements. It returns the resource graph, measurement and correction commands, and optional comparison with a direct state-vector simulation.

In plain words
What is it for?
Use it to study circuit-to-MBQC conversion, graph nodes and edges, measurement outcomes, feed-forward corrections, and final output states for supported gates. MBQC performs computation through measurements on an entangled resource rather than directly applying the original gate sequence.
Why use it?
It makes the extra resources and measurement branches introduced by MBQC visible instead of treating the conversion as a black box. Multiple sampled branches check selected cases, not every possible input or branch.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

Good fit Use it to study circuit-to-MBQC conversion, graph nodes and edges, measurement outcomes, feed-forward corrections, and final output states for supported gates. MBQC performs computation through measurements on an entangled resource rather than directly applying the original gate sequence.

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Install with agentmods
npx agentmods add skills/xi-zhao/openquantum/graphix-mbqc
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add xi-zhao/OpenQuantum --skill graphix-mbqc
Clone the repo
git clone --depth 1 https://github.com/xi-zhao/OpenQuantum

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for graphix-mbqc

README.md
[![agentmods](https://agentmods.dev/badge/skills/xi-zhao/openquantum/graphix-mbqc/github.svg)](https://agentmods.dev/skills/xi-zhao/openquantum/graphix-mbqc)
Your own site
<a href="https://agentmods.dev/skills/xi-zhao/openquantum/graphix-mbqc"><img src="https://agentmods.dev/badge/skills/xi-zhao/openquantum/graphix-mbqc/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for graphix-mbqc

Your own site · 80×15
<a href="https://agentmods.dev/skills/xi-zhao/openquantum/graphix-mbqc"><img src="https://agentmods.dev/badge/skills/xi-zhao/openquantum/graphix-mbqc.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 890 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00045 $0.00890
Opus 5.5 $0.00018 $0.00356
Sonnet 5.5 $0.00009 $0.00178
Haiku 4.5 $0.00005 $0.00089

Measured 4d ago against content hash 9275810308b1, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

graphix-mbqc scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

The scan reads SKILL.md. This mod also ships 3 executable files (mcp/bridge.py, mcp/contracts.mjs, mcp/server.mjs), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.agents/skills/graphix-mbqc/SKILL.md · 37 lines

What it actually says

Graphix 测量式量子计算

原生 SDK 路径

本能力同时支持 Graphix 的原生公开 API。用户需要 自定义 pattern、测量平面、依赖、标准化、优化与模拟 时,由 Agent 在固定依赖环境中编写和运行任务代码,不限于下文便捷 Tool 的预设模型。

使用 node scripts/sdk-access.mjs inspect graphix-mbqc 定位环境,按完整 SDK 工作流执行。模块导航:graphix;导航不是 API 白名单。

下文关于模型、门集、输入与预算的限制描述便捷 Tool 的合同;原生 SDK 另受上游版本、可选依赖、宿主资源与用户授权约束。已禁用或被拒绝的动作不能借代码路径绕过。执行状态和科研验收分别报告。

当用户研究电路模型到 MBQC 的转换、资源图和测量反馈时,调用 Harness 注册的 graphix_local.simulate_graphix_pattern。

  • 输入逻辑量子位数和门列表。支持 H、S、T、X、Y、Z、CX、CZ、RX、RY、RZ;仅旋转门必须提供 angle,本 Tool 的输入单位为弧度。
  • initialState 显式选择全零乘积态 zero 或全 plus 乘积态 plus。上游 Graphix 0.4 使用 π 的倍数表示角度,适配器负责转换,不让用户自行换算。
  • 返回资源图 nodes/edges、inputNodes/outputNodes 和制备、纠缠、测量、纠正命令。区分逻辑宽度、总资源节点数和最大同时存活量子位数。
  • branches 指定按 seed+i 采样的测量过程,可能抽到相同分支。输出包含测量记录、纠正后的复振幅、归一化误差以及可选独立电路态矢的 fidelity。
  • simulate=false 只生成与调度模式,不分配模拟态矢;此时不能同时要求 referenceMode=required。
  • 输出态按照 outputNodes 对应的逻辑 q0、q1……排序。输出已含测量副产物纠正;不要把单次原始测量位解释成最终计算结果。
  • 多 seed 对照只检查指定输入态下抽到的分支,不等于穷举所有分支或证明任意输入通道等价。当前不接硬件、不加噪声,也不声明资源最优。
  • 当前 L1,scientificValidation=not_evaluated;依赖须显式准备;计算可能写本地缓存。版本与证据见接入说明。

独立参考使用 referenceMode=auto|required|skip:auto 按默认阈值选择参考,required 使用调用方资源尝试所请求规模,skip 跳过。未执行时 reference.status=not_run,参考值和差异为 null;尝试后失败会返回错误。

逻辑量子位数、门数和测量分支采样次数由调用方选择,适配器不额外设置人工规模上限。具体资源配置见本地计算说明。

依赖准备

运行前执行 node scripts/setup-paper-tools.mjs graphix-mbqc。缺失、旧锁和已安装环境的处理见共同准备说明;Tool 不自动安装或升级依赖。

Files

What ships with it

5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago Changed · +11 lines 9275810308b1
  2. 22d ago Changed · +4 lines cb6a88e142ce
  3. 24d ago Changed 98d6a5c26b85
  4. 1mo ago First seen · 22 lines · 45 tokens per session scan A 0ac5a1eb81ed

Subscribe to this mod's changes

graphix-mbqc is a skill published in the GitHub repository xi-zhao/OpenQuantum (75 stars, last pushed yesterday), licensed MIT. It adds 45 tokens to every session and 890 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-15.

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