tenpy-ground-state

tenpy-ground-state is a skill for Claude Code, Codex from xi-zhao/OpenQuantum. It costs 26 tokens per session (839 once invoked), scanned A, original, MIT.

A finite spin-chain ground-state solver using DMRG, an algorithm that approximates low-energy states by limiting the amount of information kept between sites. It compares the result with exact diagonalization for small systems.

In plain words
What is it for?
Use it on a 3–10-site spin-1/2 chain, inspect the estimated energy, and compare it with the exact small-system result and reported energy error.
Why use it?
It provides an approximate ground-state calculation while showing when limited resources may prevent convergence. Finishing the calculation is not treated as proof that the state is correct.

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 on a 3–10-site spin-1/2 chain, inspect the estimated energy, and compare it with the exact small-system result and reported energy error.

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Install with agentmods
npx agentmods add skills/xi-zhao/openquantum/tenpy-ground-state
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 tenpy-ground-state
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 tenpy-ground-state

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/xi-zhao/openquantum/tenpy-ground-state"><img src="https://agentmods.dev/badge/skills/xi-zhao/openquantum/tenpy-ground-state.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 26 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 839 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 $0.00026 $0.00839
Opus 5.5 $0.00010 $0.00336
Sonnet 5.5 $0.00005 $0.00168
Haiku 4.5 $0.00003 $0.00084

Measured 4d ago against content hash 0fbfe7d09be8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

tenpy-ground-state 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/tenpy-ground-state/SKILL.md · 49 lines

What it actually says

TeNPy 多体基态

原生 SDK 路径

本能力同时支持 TeNPy 的原生公开 API。用户需要 自定义 site、lattice、CouplingMPOModel、MPS、DMRG、TEBD 与保存恢复 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 tenpy-ground-state 定位环境,按完整 SDK 工作流执行。模块导航:tenpy;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。

Agent 经 Harness 调用 tenpy_local 提供的 solve_tenpy_chain。本 Skill 负责选择和解释,不启动计算进程。

至少 3 个 spin-1/2 站点,S=Pauli/2;H = Σ(Jx SxSx + Jy SySy + Jz SzSz) - Σ(hx Sx + hz Sz),开放边界。站点数、bond dimension 与 sweeps 由输入决定。报告能量、磁化、纠缠熵、sweep 收敛条件和截断误差。criteriaMet 表示局部 sweep 判据,不保证全局基态。

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。

输入示例:

{
  "numSites": 4,
  "jx": 1,
  "jy": 1,
  "jz": 1
}

调用前确认用户问题落在上述范围内;参数含糊且会改变物理结果时先澄清。接口不接受代码、路径、凭据或真实硬件任务。 计算 worker 默认不设置时间或输出大小上限;部署可配置资源预算,取消会终止本次计算进程组。连接层超时与硬件环境配置见资源配置。 计算前显式准备固定依赖;运行仍可能写 SDK 缓存,因此保留 workspace-write。工具未注册或连接已禁用时,检查设置中心;不要用通用执行工具绕过禁用。 依赖尚未准备时按仓库文档运行 npm run capability:paper-tools:setup;不要自行改版本或扩大输入边界来绕过失败。

所有结果保留完整输入、输入摘要、上游版本和依赖锁摘要。报告实际数值、物理假设、误差与限制; scientificValidation=not_evaluated,比较数据不构成中央科学验收。失败时说明真实原因,不补造数据。

来源与接入范围见 论文能力说明。

依赖准备

运行前执行 node scripts/setup-paper-tools.mjs tenpy-ground-state。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 0fbfe7d09be8
  2. 22d ago Changed · +4 lines e428c63fe521
  3. 1mo ago Changed · +2 lines 37bc9e08944f
  4. 1mo ago First seen · 32 lines · 26 tokens per session scan A 590105586285

Subscribe to this mod's changes

tenpy-ground-state is a skill published in the GitHub repository xi-zhao/OpenQuantum (75 stars, last pushed yesterday), licensed MIT. It adds 26 tokens to every session and 839 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 2026-09-13.

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