audit-xls

audit-xls is a skill for Claude Code from cyijun/china-financial-services. It costs 66 tokens per session (406 once invoked), scanned A, original, Apache-2.0.

A read-only checker for Excel financial models such as discounted-cash-flow, comparable-company, and three-statement models. It examines workbook structure, formulas, links, errors, hardcoded values, sources, and financial cross-checks.

In plain words
What is it for?
Auditing financial models, checking that statements balance, reviewing valuation bridges and per-share values, and reporting passed, failed, or blocked checks with locations and repair suggestions.
Why use it?
It helps find broken formulas, inconsistent figures, missing sources, and other review issues before a model is delivered, without treating the ability to open the file as proof that it is correct.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the china-model-builder plugin — 6 skills, 1 agent shipped together

Good fit Auditing financial models, checking that statements balance, reviewing valuation bridges and per-share values, and reporting passed, failed, or blocked checks with locations and repair suggestions.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/cyijun/china-financial-services/audit-xls
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 cyijun/china-financial-services --skill audit-xls
Clone the repo
git clone --depth 1 https://github.com/cyijun/china-financial-services

Made for: Claude Code.

Or install china-model-builder, the plugin that ships this one along with the rest of its 6 skills, 1 agent.

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 audit-xls

README.md
[![agentmods](https://agentmods.dev/badge/skills/cyijun/china-financial-services/audit-xls/github.svg)](https://agentmods.dev/skills/cyijun/china-financial-services/audit-xls)
Your own site
<a href="https://agentmods.dev/skills/cyijun/china-financial-services/audit-xls"><img src="https://agentmods.dev/badge/skills/cyijun/china-financial-services/audit-xls/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 audit-xls

Your own site · 80×15
<a href="https://agentmods.dev/skills/cyijun/china-financial-services/audit-xls"><img src="https://agentmods.dev/badge/skills/cyijun/china-financial-services/audit-xls.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 66 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 406 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 $0.00066 $0.00406
Opus 5 $0.00033 $0.00203
Sonnet 5 $0.00013 $0.00081
Haiku 4.5 $0.00007 $0.00041

Measured 11d ago against content hash c7921de1bdd0, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

audit-xls 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 11d 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.

plugins/china-model-builder/skills/audit-xls/SKILL.md · 21 lines

What it actually says

Excel财务模型审计

工作流

  1. 复制到临时位置审计,保留原文件;记录文件哈希、审计时间和使用的计算引擎。
  2. 检查必需工作表、隐藏表/行列、外部链接、命名区域、合并单元格和异常格式。
  3. 扫描#REF!#DIV/0!#VALUE!#N/A等错误;区分缓存值与公式执行结果。
  4. 检查公式连续性、意外硬编码、跨表引用、循环引用、敏感性中心格和单位一致性。
  5. 执行模型专用勾稽:资产负债平衡、现金变动、留存收益、债务/利息、EV到股权价值桥和每股价值。
  6. 抽查输入的来源、日期、时点、币种和[ASSUMPTION]标记;方法论正确性单独列示,不能只靠技术审计。
  7. 只有实际通过支持Excel公式的引擎重算后,才标记formula_recalculated=true;openpyxl读取或保存不算重算。

输出契约

输出passfailblocked,并列文件哈希、执行过的检查、错误位置、勾稽差额、未执行项目和修复建议。不得声称未运行的检查已经通过。

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. 11d ago First seen · 21 lines · 66 tokens per session scan A c7921de1bdd0

Subscribe to this mod's changes

audit-xls is a skill published in the GitHub repository cyijun/china-financial-services (19 stars, last pushed 17d ago), licensed Apache-2.0. It adds 66 tokens to every session and 406 once invoked, about $0.0003 per session on Opus 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 2026-08-30.