Question

I have already read the Instapaper API page, but it only explains how to:

• Authenticate a user.
• Add an article to read later.

What I would like is information to programmatically:

• Retrieve a list of the articles in the “Read Later” list.
• Archive, favourite, put in a folder, delete a given article from the list.
• Create and delete folders.

Answer 1

I don’t think there’s a public API available yet, that would give you the functionality you’re requesting.

According to this interview with Marco Arment, the creator of Instapaper, he plans to extend his API in the future:

“[…] I do intend to make a fully
featured API available soon that would
enable third-party developers to make
Instapaper clients if they wish.”

Update:
In the meanwhile, Marco Arment has made the full Instapaper API available. The only restriction is, that the API can only used by paid-subscriber accounts (currently 1$/month).