excel-handler

excel-handler is a skill for Claude Code, Codex from AIDotNet/MoYuCode. It costs 32 tokens per session (260 once invoked), scanned A, original, MIT.

A tool for reading, creating, editing, and converting Excel spreadsheets, including .xlsx and .xls files. It supports formulas, formatting, data export, and merging files.

In plain words
What is it for?
Use it to turn spreadsheets into JSON or CSV, create workbooks from JSON or CSV, merge Excel files, and manipulate spreadsheet contents.
Why use it?
It removes the need to manually move spreadsheet data between files or write separate scripts for common Excel tasks.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions Claude Code; mentions Codex.

Good fit Use it to turn spreadsheets into JSON or CSV, create workbooks from JSON or CSV, merge Excel files, and manipulate spreadsheet contents.

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Install with agentmods
npx agentmods add skills/aidotnet/moyucode/excel-handler
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 AIDotNet/MoYuCode --skill excel-handler
Clone the repo
git clone --depth 1 https://github.com/AIDotNet/MoYuCode

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 excel-handler

README.md
[![agentmods](https://agentmods.dev/badge/skills/aidotnet/moyucode/excel-handler/github.svg)](https://agentmods.dev/skills/aidotnet/moyucode/excel-handler)
Your own site
<a href="https://agentmods.dev/skills/aidotnet/moyucode/excel-handler"><img src="https://agentmods.dev/badge/skills/aidotnet/moyucode/excel-handler/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 excel-handler

Your own site · 80×15
<a href="https://agentmods.dev/skills/aidotnet/moyucode/excel-handler"><img src="https://agentmods.dev/badge/skills/aidotnet/moyucode/excel-handler.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 32 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 260 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 $0.00032 $0.00260
Opus 5.5 $0.00013 $0.00104
Sonnet 5.5 $0.00006 $0.00052
Haiku 4.5 $0.00003 $0.00026

Measured 1mo ago against content hash 07ab7d299962, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

excel-handler 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 1 executable file (scripts/excel_handler.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.

skills/tools/excel-handler/SKILL.md · 43 lines

What it actually says

Excel Handler Tool

Description

Read, write, and manipulate Excel spreadsheets with support for formulas, styling, and data export.

Trigger

  • /excel command
  • User requests Excel file operations
  • User needs to read or create spreadsheets

Usage

# Read Excel to JSON
python scripts/excel_handler.py read --input data.xlsx --output data.json

# Create Excel from JSON/CSV
python scripts/excel_handler.py create --input data.json --output report.xlsx

# Convert Excel to CSV
python scripts/excel_handler.py convert --input data.xlsx --output data.csv

# Merge multiple Excel files
python scripts/excel_handler.py merge --inputs file1.xlsx,file2.xlsx --output merged.xlsx

Tags

excel, spreadsheet, xlsx, csv, data

Compatibility

  • Codex: ✅
  • Claude Code: ✅
Files

What ships with it

1 file 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. 1mo ago First seen · 43 lines · 32 tokens per session scan A 07ab7d299962

Subscribe to this mod's changes

excel-handler is a skill published in the GitHub repository AIDotNet/MoYuCode (85 stars, last pushed 8mo ago), licensed MIT. It adds 32 tokens to every session and 260 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 2026-08-30.