I am currently mocking out several endpoints in Paw, including one that would typicaly receive multipart form data as a combination of standard text input as well as a file.
If it were a form, it would look like this:
<form action="/image/save" method="post" enctype="multipart/form-data">
<input name="text-stuff" type="text" />
<input name="image-stuff" type="file" />
<input type="submit" value="Save"/>
</form>
How do I upload a file as part of a multipart request in Paw?
And found 5 mins later.
You need to right click on the field, then select "File".
Link
Update Dec 2017
https://paw.cloud/docs/getting-started/set-request-body#Set_Multipart_body
Previously
As note in the comments, the original link has died https://web.archive.org/web/20150326015604/http://luckymarmot.com/paw/doc/Send_Files_as_Multipart_Form_Data
Original reference
https://luckymarmot.com/paw/doc/Send_Files_as_Multipart_Form_Data