Note: A Quip release around 16th September 2019 broke the draw.io integration. Please contact Quip support to ask them what they did, because they didn't tell us.
To insert a draw.io diagram into Quip, type @draw.io diagram, pick a template and click Create.
To import an existing diagram, click Import in the template dialog or drag and drop a file to the live app at any time. (Supported file formats: VSDX, Gliffy, Lucidchart and draw.io.)
Note: Currently, MS Edge cannot save to Quip and runs in read-only mode!