A skill for working with spreadsheet files such as XLSX, XLSM, CSV, and TSV. It applies when a spreadsheet is the main file being read, changed, repaired, or created.

Use it to open, clean, edit, calculate, format, chart, or create spreadsheet files.

It helps handle spreadsheet data and formatting tasks in a consistent workflow instead of treating the file as plain text.

xlsx — Skill for Claude Code and Codex by apconw/Aix-DB

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 apconw/Aix-DB --skill xlsx

Clone the repo

git clone --depth 1 https://github.com/apconw/Aix-DB

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/apconw/aix-db/xlsx/github.svg)](https://agentmods.dev/skills/apconw/aix-db/xlsx)

Your own site

<a href="https://agentmods.dev/skills/apconw/aix-db/xlsx"><img src="https://agentmods.dev/badge/skills/apconw/aix-db/xlsx/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/apconw/aix-db/xlsx"><img src="https://agentmods.dev/badge/skills/apconw/aix-db/xlsx.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 201 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,835 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. Third-party audits

NVIDIA SkillSpector warn 7 Sept 2026

SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

medium Prompt Injection · line 101
Subtle instructions detected that may alter agent decision-making or introduce hidden biases.

Fix: Review content for implicit steering or bias. Ensure instructions are explicit and align with the skill's stated purpose.

How audits are shown

Origin unknown 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.

Model	Per session	Once invoked
Fable 5.1	$0.00201	$0.02835
Opus 5.5	$0.00080	$0.01134
Sonnet 5.5	$0.00040	$0.00567
Haiku 4.5	$0.00020	$0.00283

Measured 1mo ago against content hash dd316db7785a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

xlsx 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 1mo ago.

The scan reads SKILL.md. This mod also ships 13 executable files (scripts/office/helpers/__init__.py, scripts/office/helpers/merge_runs.py, scripts/office/helpers/simplify_redlines.py, …), 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.

agent/common/skills/xlsx/SKILL.md · 292 lines

The source is not reproduced here

No licence file

Read it on GitHub

Files

What ships with it

53 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.

1mo ago First seen · 292 lines · 201 tokens per session scan A dd316db7785a

Subscribe to this mod's changes

xlsx is a skill published in the GitHub repository apconw/Aix-DB (2,255 stars, last pushed 14d ago), with no licence file. It adds 201 tokens to every session and 2,835 once invoked, about $0.0008 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 2026-08-30.

Documents Spreadsheets bigdata dify echarts qwen sanic text2sql

xlsx

Getting it into your agent

Wrote this? Show the measurements

What it costs to keep this loaded

Grade A, and why

Nothing flagged

The source is not reproduced here

No licence file

What ships with it

What this file has done since we first saw it

Other skills, from other repositories

markdown-exporter

xlsx

pdf-batch

csvglow

dcf-model

gog