simqn-network

simqn-network is a skill for Claude Code, Codex from xi-zhao/OpenQuantum. It costs 44 tokens per session (736 once invoked), scanned A, original, MIT.

A local simulator for one quantum communication link, modelling message loss, fixed travel delay, and decline in the fidelity of an entangled state. It runs repeated independent attempts and does not connect to the internet.

In plain words
What is it for?
Use it to test how distance, loss probability, timing, and decoherence affect arrivals and fidelity on a single link. It reports received and dropped attempts plus arrival records.
Why use it?
It provides a controlled way to compare link conditions without real quantum hardware or a network service. It also makes clear that simulated arrival ratios are not guarantees and that routing, storage, and key generation are outside its scope.

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 test how distance, loss probability, timing, and decoherence affect arrivals and fidelity on a single link. It reports received and dropped attempts plus arrival records.

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Install with agentmods
npx agentmods add skills/xi-zhao/openquantum/simqn-network
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 simqn-network
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 simqn-network

README.md
[![agentmods](https://agentmods.dev/badge/skills/xi-zhao/openquantum/simqn-network/github.svg)](https://agentmods.dev/skills/xi-zhao/openquantum/simqn-network)
Your own site
<a href="https://agentmods.dev/skills/xi-zhao/openquantum/simqn-network"><img src="https://agentmods.dev/badge/skills/xi-zhao/openquantum/simqn-network/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 simqn-network

Your own site · 80×15
<a href="https://agentmods.dev/skills/xi-zhao/openquantum/simqn-network"><img src="https://agentmods.dev/badge/skills/xi-zhao/openquantum/simqn-network.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 44 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 736 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 $0.00044 $0.00736
Opus 5.5 $0.00018 $0.00294
Sonnet 5.5 $0.00009 $0.00147
Haiku 4.5 $0.00004 $0.00074

Measured 4d ago against content hash ef0e50cd12d9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

simqn-network 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 4 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/simqn-network/SKILL.md · 30 lines

What it actually says

SimQN 量子链路

原生 SDK 路径

本能力同时支持 SimQN 的原生公开 API。用户需要 拓扑、节点、信道、存储、事件与自定义协议 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 simqn-network 定位环境,按完整 SDK 工作流执行。模块导航:qns;导航不是 API 白名单。

上游 GPL 许可;保持独立进程,不改变现有 MCP 默认关闭状态。

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。

Agent 经 Harness 调用 simqn_local 的 simulate_simqn_link,比较不同链路参数下的到达次数、到达时间和保真度。这里的 network 是仿真的量子网络,不会访问互联网。

输入 attempts 次独立发送,时间间隔 intervalSeconds、固定传播延迟 delaySeconds,长度 lengthMeters,随机丢失概率 dropProbability,以及 Werner 态初始 initialFidelity。decoherencePerMeter 是每米衰减率;SDK 用 w=(4F-1)/3、w'=w exp(-rate*length) 计算保真度。延迟没有额外加入存储退相干。timeSlotsPerSecond 控制离散时间精度,SDK 向下量化时间;seed 使用 NumPy RandomState 可表示的 32 位无符号整数。

Tool 返回 received、dropped 和逐到达记录;全丢失时 arrivals=[]。这是无限带宽、无排队的独立单链路模型,不包含中继交换、量子存储、路由、BB84 协商或密钥生成。分析丢失时使用多次试验,不能把单次采样比率当成保证值。

固定 SimQN/qns 0.2.3,GPL-3.0,连接默认关闭、由用户自行确认许可并启用。先显式准备 node scripts/setup-paper-tools.mjs simqn-network;Python 3.12 的独立环境及依赖由锁文件确定。SDK 可能写本地缓存,最大副作用为 workspace-write;计算不安装依赖、不使用凭据、不连接服务。

调用方选择试验规模,部署限制用独立的 execution 控制。当前 L1,scientificValidation=not_evaluated;数值与集成测试是开发证据,不等于科学验收。

Files

What ships with it

6 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 · +13 lines ef0e50cd12d9
  2. 18d ago First seen · 17 lines · 44 tokens per session scan A ff0724cd83d0

Subscribe to this mod's changes

simqn-network is a skill published in the GitHub repository xi-zhao/OpenQuantum (75 stars, last pushed yesterday), licensed MIT. It adds 44 tokens to every session and 736 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 2026-09-29.

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