Approach and advantage
The source requires formula recalculation and error checks, with spreadsheet-specific handling for formulas and formatting.
IntermediateAgent Skill
xlsx
Create, edit, format, and check spreadsheet files within Anthropic’s supported environment.
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What this Skill does
Create, edit, format, and check spreadsheet files within Anthropic’s supported environment. The source requires formula recalculation and error checks, with spreadsheet-specific handling for formulas and formatting.
What makes it different
What you can use it for
Clean an uploaded product-catalog spreadsheet; Build a formula-based margin workbook from supplied data; Review formulas and formatting before delivering an XLSX file.
Before you use it
Inputs to prepare
A supported Claude environment with file tools, source workbook or tabular data, and a clear output specification.
Agent and runtime
Use Anthropic’s supported spreadsheet environment and current terms.
Scope to confirm
This is proprietary source under Anthropic’s terms, not an MIT Skill. This page does not redistribute its body or offer a local installation command; use the official supported environment.
Use in a supported Claude environment
Use in the supported host
- Open the official Anthropic source and usage documentation linked below to confirm the supported environment and applicable terms.
- In a Claude environment with spreadsheet/file tools enabled, upload a workbook or table and ask for an XLSX deliverable.
- Describe formulas, sheets, and formatting; download the result and check recalculated values before use.
Official source and usage terms
The full source is not reproduced here because redistribution permission is restricted or unconfirmed. Read it at the official link below; the use cases on this page are editorial examples.
Source and package files reviewed on October 25, 2026: GitHub dbd4588f9e10. This is a static review, not an installation or business-outcome test.
View the reviewed source · Custom terms
License notice
© 2025 Anthropic, PBC. All rights reserved. LICENSE: Use of these materials (including all code, prompts, assets, files, and other components of this Skill) is governed by your agreement with Anthropic regarding use of Anthropic's services. If no separate agreement exists, use is governed by Anthropic's Consumer Terms of Service or Commercial Terms of Service, as applicable: https://www.anthropic.com/legal/consumer-terms https://www.anthropic.com/legal/commercial-terms Your applicable agreement is referred to as the "Agreement." "Services" are as defined in the Agreement. ADDITIONAL RESTRICTIONS: Notwithstanding anything in the Agreement to the contrary, users may not: - Extract these materials from the Services or retain copies of these materials outside the Services - Reproduce or copy these materials, except for temporary copies created automatically during authorized use of the Services - Create derivative works based on these materials - Distribute, sublicense, or transfer these materials to any third party - Make, offer to sell, sell, or import any inventions embodied in these materials - Reverse engineer, decompile, or disassemble these materials The receipt, viewing, or possession of these materials does not convey or imply any license or right beyond those expressly granted above. Anthropic retains all right, title, and interest in these materials, including all copyrights, patents, and other intellectual property rights.
Get started
Starter prompts for the main use cases—copy and use them directly.
01Clean an uploaded product-catalog spreadsheet
Clean an uploaded product-catalog spreadsheet Use for: Clean an uploaded product-catalog spreadsheet. Prepare: A supported Claude environment with file tools, source workbook or tabular data, and a clear output specification.
Show prompt and variablesHide prompt and variables
Clean an uploaded product-catalog spreadsheet
Clean an uploaded product-catalog spreadsheet Use for: Clean an uploaded product-catalog spreadsheet. Prepare: A supported Claude environment with file tools, source workbook or tabular data, and a clear output specification.
Use the spreadsheet tools in the supported Claude environment. Task: Clean an uploaded product-catalog spreadsheet. Inputs: [INPUT]. Constraints: [CONSTRAINTS]. Check missing information first. Produce a reviewable result with evidence, assumptions, and next steps. This is proprietary source under Anthropic’s terms, not an MIT Skill. This page does not redistribute its body or offer a local installation command; use the official supported environment.Replace these variables
[INPUT]- A supported Claude environment with file tools, source workbook or tabular data, and a clear output specification.
[CONSTRAINTS]- Scope, allowed actions, output format, and review requirements.
02Build a formula-based margin workbook from supplied data
Build a formula-based margin workbook from supplied data Use for: Build a formula-based margin workbook from supplied data. Prepare: A supported Claude environment with file tools, source workbook or tabular data, and a clear output specification.
Show prompt and variablesHide prompt and variables
Build a formula-based margin workbook from supplied data
Build a formula-based margin workbook from supplied data Use for: Build a formula-based margin workbook from supplied data. Prepare: A supported Claude environment with file tools, source workbook or tabular data, and a clear output specification.
Use the spreadsheet tools in the supported Claude environment. Task: Build a formula-based margin workbook from supplied data. Inputs: [INPUT]. Constraints: [CONSTRAINTS]. Check missing information first. Produce a reviewable result with evidence, assumptions, and next steps. This is proprietary source under Anthropic’s terms, not an MIT Skill. This page does not redistribute its body or offer a local installation command; use the official supported environment.Replace these variables
[INPUT]- A supported Claude environment with file tools, source workbook or tabular data, and a clear output specification.
[CONSTRAINTS]- Scope, allowed actions, output format, and review requirements.
03Review formulas and formatting before delivering an XLSX file
Review formulas and formatting before delivering an XLSX file Use for: Review formulas and formatting before delivering an XLSX file. Prepare: A supported Claude environment with file tools, source workbook or tabular data, and a clear output specification.
Show prompt and variablesHide prompt and variables
Review formulas and formatting before delivering an XLSX file
Review formulas and formatting before delivering an XLSX file Use for: Review formulas and formatting before delivering an XLSX file. Prepare: A supported Claude environment with file tools, source workbook or tabular data, and a clear output specification.
Use the spreadsheet tools in the supported Claude environment. Task: Review formulas and formatting before delivering an XLSX file. Inputs: [INPUT]. Constraints: [CONSTRAINTS]. Check missing information first. Produce a reviewable result with evidence, assumptions, and next steps. This is proprietary source under Anthropic’s terms, not an MIT Skill. This page does not redistribute its body or offer a local installation command; use the official supported environment.Replace these variables
[INPUT]- A supported Claude environment with file tools, source workbook or tabular data, and a clear output specification.
[CONSTRAINTS]- Scope, allowed actions, output format, and review requirements.
Risks and operating notes
Known limits
This is proprietary source under Anthropic’s terms, not an MIT Skill. This page does not redistribute its body or offer a local installation command; use the official supported environment.
Evidence and review
Source and package files reviewed on October 25, 2026: GitHub dbd4588f9e10. This is a static review, not an installation or business-outcome test.
Before acting on the result
Use authorized inputs and keep secrets out of prompts. Review customer-facing claims, calculations, code changes, and any proposed external action before applying them.
Frequently asked questions
What does it do, and what is the advantage?
Create, edit, format, and check spreadsheet files within Anthropic’s supported environment. The source requires formula recalculation and error checks, with spreadsheet-specific handling for formulas and formatting.
How do I install it and start?
Open the official Anthropic source and usage documentation linked below to confirm the supported environment and applicable terms. In a Claude environment with spreadsheet/file tools enabled, upload a workbook or table and ask for an XLSX deliverable. Describe formulas, sheets, and formatting; download the result and check recalculated values before use.
Which situations is it useful for?
Clean an uploaded product-catalog spreadsheet; Build a formula-based margin workbook from supplied data; Review formulas and formatting before delivering an XLSX file
What limitations should I know?
This is proprietary source under Anthropic’s terms, not an MIT Skill. This page does not redistribute its body or offer a local installation command; use the official supported environment.
What was checked for this page?
Source and package files reviewed on October 25, 2026: GitHub dbd4588f9e10. This is a static review, not an installation or business-outcome test.
Anthropic
Source and package files reviewed on October 25, 2026: GitHub dbd4588f9e10. This is a static review, not an installation or business-outcome test.
Original pageGitHubSource repositoryCustom terms
Source and package files reviewed on October 25, 2026: GitHub dbd4588f9e10. This is a static review, not an installation or business-outcome test.
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