Install CDXZipStream

One account and one API key work everywhere. You’ll need a key to run anything — start free if you don’t have one.

Microsoft Excel

Store listing in review

Windows, Mac, and Excel on the web · Microsoft 365 or Office 2021 and newer

Until our Microsoft AppSource listing is approved, Excel installs from a manifest file you upload once. It takes about a minute, and it keeps working afterwards.

Download manifest (.xml) ↓Step-by-step instructions ↗

Instructions cover Excel on the web, Excel for Windows, and Excel for Mac — each is slightly different. Microsoft does not allow one-click install from a vendor site; that arrives with the AppSource listing.

LibreOffice Calc

Available now

Windows, Mac, and Linux · one file, all three

Download the extension, double-click it, and restart LibreOffice. Then set your API key from the CDXZipStream menu inside Calc.

Download extension (.oxt) ↓Step-by-step instructions ↗

Includes an Insert-function wizard, a right-click menu, and in-app update checks. Already have it? Install over the top — your key and settings are kept.

Google Sheets

In development

Any browser

The Sheets add-on is being prepared for the Google Workspace Marketplace and isn’t available yet. If Sheets is how you work, tell us — it moves up the list. In the meantime the REST API works from Apps Script today.

API, and Claude

Available now

Any language · Claude web, Desktop, Code, and the API

Call the REST API directly, or connect Claude to CDXZipStream with the MCP connector — nothing to install for either.

API documentation →Use in Claude →

Stuck? Support has install troubleshooting, or email us — no account needed.