A tool for creating, editing, and analyzing spreadsheet files such as Excel workbooks, CSV files, and tab-separated files. It also supports formulas and data visualizations.

Use it to create or edit workbooks, process CSV or TSV data, work with formulas, or produce visualizations from spreadsheet data.

It helps automate spreadsheet work and inspect or transform tabular data without handling each cell manually.

xlsx — Skill for Claude Code and Codex by xg-gh-25/SwarmAI

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 xg-gh-25/SwarmAI --skill s_xlsx

Clone the repo

git clone --depth 1 https://github.com/xg-gh-25/SwarmAI

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/xg-gh-25/swarmai/s_xlsx/github.svg)](https://agentmods.dev/skills/xg-gh-25/swarmai/s_xlsx)

Your own site

<a href="https://agentmods.dev/skills/xg-gh-25/swarmai/s_xlsx"><img src="https://agentmods.dev/badge/skills/xg-gh-25/swarmai/s_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/xg-gh-25/swarmai/s_xlsx"><img src="https://agentmods.dev/badge/skills/xg-gh-25/swarmai/s_xlsx.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 56 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 134 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 pass 7 Sept 2026

How audits are shown

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.

Model	Per session	Once invoked
Fable 5.1	$0.00056	$0.00134
Opus 5.5	$0.00022	$0.00054
Sonnet 5.5	$0.00011	$0.00027
Haiku 4.5	$0.00006	$0.00013

Measured 5d ago against content hash 475672ee5c99, 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 5d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (recalc.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.

backend/skills/s_xlsx/SKILL.md · 16 lines

What it actually says

XLSX Editor

This skill loads full instructions on activation. Read INSTRUCTIONS.md before proceeding.

TRIGGER: any request involving spreadsheets, Excel files, CSV data, formulas, or data visualization DO NOT USE: for plain text tables (just use markdown)

Files

What ships with it

2 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.

5d ago Changed · +1 lines 475672ee5c99
2mo ago First seen · 15 lines · 56 tokens per session scan A 9797d6fc2b8e

Subscribe to this mod's changes

xlsx is a skill published in the GitHub repository xg-gh-25/SwarmAI (59 stars, last pushed yesterday), licensed MIT. It adds 56 tokens to every session and 134 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 2026-09-03.

Analytics and metrics Documents Spreadsheets agentic-ai ai-agent ai-memory aws-bedrock claude context-engineering

xlsx next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
xlsxxg-gh-25/SwarmAI	Skill	59	yesterday	MIT	A	56	Claude Code, Codex
gogApiliumCode/mayros	Skill	13	3mo ago	MIT	A	20	Claude Code, Codex
feishu-driveApiliumCode/mayros	Skill	13	3mo ago	MIT	A	22	Claude Code, Codex
browser4-web-minerplatonai/Browser4	Skill	1.2k	yesterday	Apache-2.0	A	57	Claude Code, Codex
xlsxMemTensor/memmy-agent	Skill	2.2k	yesterday	MIT	A	35	Claude Code, Codex
craft-data-visualBlackBeltTechnology/pi-agent-dashboard	Skill	341	2d ago	MIT	A	71	Claude Code, Codex
gridcraftBlackBeltTechnology/pi-agent-dashboard	Skill	341	2d ago	MIT	A	82	Claude Code, Codex