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Report Attachment Analyzer

Turns the report that lands in your inbox every week into a maintained trend spreadsheet and a one-page summary of what changed.

What it produces

All saved to OneDrive under /Documents/Cowork/output/report-attachment-analyzer/<report-name>/:

What to say to it

  • “Update the trends for the weekly sales report”
  • “Check my inbox for the latest ops KPI report and tell me what changed”
  • “Has the monthly cloud cost report arrived? Pull the numbers into the trend sheet”
  • “Set up tracking for the finance report I get every Monday”

How to install it

  1. 1Download report-attachment-analyzer.zip.
  2. 2In Cowork, open Customize.
  3. 3Select the Skills tab.
  4. 4Select the arrow next to Add, then Upload skill, and choose the file you downloaded.
  5. 5Start a new conversation and use one of the phrases above. Skills are only picked up when a conversation starts.

Cowork has to be switched on for you by an admin, and it is off by default. Custom skills are not supported on a phone or tablet, so use a laptop or desktop.

Cowork checks the file when you upload it and tells you if something is wrong, so you will know either way.

Last run in a live Cowork tenant on 2026-06-16.

Read the full skill, including its rules and references, in the source repository. Licensed CC BY-SA 4.0 as part of awesome-copilot-cowork-skills.