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xlsx-operations

xlsx-operations is a skill for Claude Code, Codex from CodeInfinity1/Stram. It costs 28 tokens per session (469 once invoked), scanned A, original, MIT.

A workflow for cleaning, analyzing, formatting, and planning spreadsheet work. It supports Excel files and CSV data, including formulas, tables, summaries, and charts.

In plain words
What is it for?
Inspecting or creating workbooks, cleaning spreadsheet data, calculating summaries, formatting tables, and planning charts.
Why use it?
It helps preserve source rows, headers, data types, and formulas while checking that the resulting workbook or analysis is correct.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

not rated 11repo 2mo ago A scan 28 tokens original MIT

Good fit Inspecting or creating workbooks, cleaning spreadsheet data, calculating summaries, formatting tables, and planning charts.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/codeinfinity1/stram/xlsx-operations
View source ↗ CodeInfinity1/Stram
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 CodeInfinity1/Stram --skill xlsx-operations
Clone the repo
git clone --depth 1 https://github.com/CodeInfinity1/Stram

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 xlsx-operations

README.md
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Your own site
<a href="https://agentmods.dev/skills/codeinfinity1/stram/xlsx-operations"><img src="https://agentmods.dev/badge/skills/codeinfinity1/stram/xlsx-operations/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 xlsx-operations

Your own site · 80×15
<a href="https://agentmods.dev/skills/codeinfinity1/stram/xlsx-operations"><img src="https://agentmods.dev/badge/skills/codeinfinity1/stram/xlsx-operations.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 28 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 469 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 $0.00028 $0.00469
Opus 5.5 $0.00011 $0.00188
Sonnet 5.5 $0.00006 $0.00094
Haiku 4.5 $0.00003 $0.00047

Measured 1mo ago against content hash f68ee3dd2a5d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

xlsx-operations 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.

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/office-productivity/xlsx-operations/SKILL.md · 69 lines

How it starts

The opening of the file, as written. The whole thing — 69 lines — stays where its author put it; the contents beside it link to each section on GitHub.

XLSX Operations

Purpose

Support spreadsheet analysis and artifact planning. Stram can use approved Python/interpreter workflows when packages are available; dedicated Excel adapters should be native and tested.

When To Use

Use for spreadsheet analysis, CSV/XLSX cleaning, formulas, tables, summaries, workbook planning, and Excel tool implementation.

Inputs And Evidence

  • Spreadsheet path, schema, desired calculations, formatting, charts, and output path.
  • Data quality constraints and formulas.

Tool Map

  • read_file
  • xlsx_workbook_create
  • xlsx_workbook_inspect
  • python_interpreter
  • python_interpreter_artifact
  • write_note
  • data-analysis-notebook
  • data-visualization

Workflow

  1. Confirm file type and path boundary.
  2. Determine whether analysis, cleanup, formatting, or artifact creation is needed.
  3. Use xlsx_workbook_create for new Excel artifacts and xlsx_workbook_inspect for workbook verification before falling back to approved Python.
  4. Preserve formulas, headers, types, and source rows.
  5. Verify outputs through artifact inspection or summaries.
  6. Report missing native Excel adapter gaps.

Native Implementation Boundaries

  • Do not import Anthropic XLSX skill code or external reference spreadsheet scripts.
  • Use Stram-owned interpreter/tool paths only.
  • Use the Stram-owned xlsx_workbook_create and xlsx_workbook_inspect tools for basic workbook creation and verification; add additional native spreadsheet tools with schemas/tests when needed.

Safety And Approval

  • Spreadsheets may contain financial or personal data.
  • Do not overwrite source workbooks without approval.
  • Avoid silently changing formulas.

Verification

  • Validate row/column counts and key formulas.
  • Confirm artifact path and generated file status.
  • Confirm workbook inspection reports expected sheet names, dimensions, sample rows, and formulas.
  • Report any package/tool limitations.

Failure Modes

  • Treating XLSX as plain CSV.
  • Breaking formulas or formatting silently.
  • Missing hidden sheets or filters.

Read the full file on GitHub · 69 lines

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 · 69 lines · 28 tokens per session scan A f68ee3dd2a5d

Subscribe to this mod's changes

xlsx-operations is a skill published in the GitHub repository CodeInfinity1/Stram (11 stars, last pushed 2mo ago), licensed MIT. It adds 28 tokens to every session and 469 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 2026-09-03.

Analytics and metricsDocumentsSpreadsheetsai-agentai-agentsai-toolsdesktop-automationdesktop-automation-softwaredesktop-automation-windows
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