quantum-guide-algorithms-eigensolvers

quantum-guide-algorithms-eigensolvers is a skill for Claude Code from xi-zhao/OpenQuantum. It costs 37 tokens per session (617 once invoked), scanned A, original, MIT.

A routing guide for eigenvalue and eigenvector problems. Eigenvalues describe special scaling factors of a matrix, while eigenvectors are the directions that keep that matrix action aligned.

In plain words
What is it for?
Use it to select a method for solving matrix eigenproblems, estimating a minimum energy, or finding several excited states with overlap checks.
Why use it?
It chooses a suitable local workflow for a classical NumPy eigensolver, a variational excited-state method, or a minimum-eigenvalue calculation instead of treating them as one problem.

Skill for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter. Also seen: installed under .agents/ (shared by several agents).

Good fit Use it to select a method for solving matrix eigenproblems, estimating a minimum energy, or finding several excited states with overlap checks.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/xi-zhao/openquantum/quantum-guide-algorithms-eigensolvers
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 quantum-guide-algorithms-eigensolvers
Clone the repo
git clone --depth 1 https://github.com/xi-zhao/OpenQuantum

Made for: Claude Code.

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 quantum-guide-algorithms-eigensolvers

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/xi-zhao/openquantum/quantum-guide-algorithms-eigensolvers"><img src="https://agentmods.dev/badge/skills/xi-zhao/openquantum/quantum-guide-algorithms-eigensolvers.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 617 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 $0.00037 $0.00617
Opus 5.5 $0.00015 $0.00247
Sonnet 5.5 $0.00007 $0.00123
Haiku 4.5 $0.00004 $0.00062

Measured 4d ago against content hash 952aefe85cfc, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

quantum-guide-algorithms-eigensolvers 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.

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/quantum-guide-algorithms-eigensolvers/SKILL.md · 31 lines

What it actually says

algorithms/eigensolvers

本地开源适配。上游指南 ID:algorithms/eigensolvers。

分类导航:保留用户显式调用;自动任务直接选择叶子方法 Skill,或使用 quantum-algorithms 查找。

选择工作流

按用户的数学问题、输入表示、计算规模和需要的输出选择一个叶子 Skill。知识解释可直接使用原理;计算任务加载叶子 Skill,使用其中的开源实现和现有代码执行 Tool。无需为阅读指南启动额外服务。

  • quantum-numpy-minimum-eigensolver:NumPy 最小本征对,明确标记经典算法并报告残差。
  • quantum-numpy-eigensolver:NumPy Hermitian 稠密本征求解,明确标记经典算法并报告特征残差。
  • quantum-vqd:通过逐态重叠惩罚求激发态(VQD),报告能量与态间重叠;惩罚和 ansatz 会影响收敛。

全量条目见覆盖表。如果用户描述跨领域,按实际依赖组合相关叶子 Skill;不要要求用户先阅读整条目录链。

来源与边界

上游 MIT 指南:algorithms/eigensolvers。原文作为参考保存在固定检索库,本文件将执行路线改为开源 SDK。来源摘要和算法模块对应关系见coverage.json,许可证与改动说明见NOTICE。

自定义 SDK 程序

示例用于解释和接口核验,不是可执行任务的边界。用户需要其他模型、数据、算法步骤、梯度或后端时,按原生 SDK 工作台在固定环境中编写并执行自定义代码;由 Agent 完成程序与工件交付。使用 quantum-algorithms 环境定位相关 SDK,保留本算法的数学假设与数值误差说明。

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 · +4 lines 952aefe85cfc
  2. 22d ago First seen · 27 lines · 37 tokens per session scan A ba901cbd31f4

Subscribe to this mod's changes

quantum-guide-algorithms-eigensolvers is a skill published in the GitHub repository xi-zhao/OpenQuantum (75 stars, last pushed yesterday), licensed MIT. It adds 37 tokens to every session and 617 once invoked, about $0.0001 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 2026-09-25.

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