Seems like a good list of ideas.

For #1, you should probably make sure to use assert=user so people running the code have to have configured their credentials so the edit is done as logged-in. And you should mention in the tutorial that most wikis have policies about running bots, such as the English Wikipedia's https://en.wikipedia.org/wiki/Wikipedia:Bot_policy, so hopefully people will be less likely to get blocked for running unauthorized bots.

As for other ideas, I don't have an idea for a topic that would use the feature but it would be good to have a tutorial that uses generators and continuation and batchcomplete as described at https://www.mediawiki.org/wiki/API:Query#Generators_and_continuation. You'd need some idea that involves working through a list of pages (e.g. category members, pages linking to a page, etc) and fetching "continuable" properties of each page (e.g. the links, templates, images, categories, or the like, not stuff like prop=info or pageimages or textextracts that return one thing for each page).

Neat!

For 2 "2. Featured articles reader" I would recommend the use of the REST API (https://en.wikipedia.org/api/rest_v1/#!/Feed/aggregatedFeed) as it minimises the amount of parameters you need to think about it. Even as I look at the APISandbox now, I'm a bit lost with how I get the API to work (https://www.mediawiki.org/wiki/Special:ApiSandbox#action=featuredfeed tells me to add a feed that is not editable) .

From my experience the best kind of tutorials are the really easy to follow ones with very simplistic and understandable output that the developer can share/show off about :). I worry for this reason that 5+6 may be a little ambitious (5 and 6 seem a little more open to interpretation than the others).

If you're feeling brave might I also suggest you do a video walking through these?

You might also want to consider a couple of other ideas:

1. doing something relating to "page previews" e.g. like this demo: https://github.com/AnandChowdhary/hovercard using https://en.wikipedia.org/api/rest_v1/#!/Page_content/get_page_summary_title
2. A reading list feature that allows you to add and remove articles (introduces developers to PUT, GET and DELETE and TODO apps are all the rage these days for hack projects) https://en.wikipedia.org/api/rest_v1/#!/Reading_lists/put_data_lists_id)

In T212006#4828826, @Jdlrobson wrote:

For 2 "2. Featured articles reader" I would recommend the use of the REST API (https://en.wikipedia.org/api/rest_v1/#!/Feed/aggregatedFeed)

Although that would be outside the scope of this task, as this task is about demo apps for the Action API.

Even as I look at the APISandbox now, I'm a bit lost with how I get the API to work (https://www.mediawiki.org/wiki/Special:ApiSandbox#action=featuredfeed tells me to add a feed that is not editable) .

It appears the extension is not correctly set up for mediawiki.org, as no one has created the messages on-wiki to define the feeds there. It seems easy enough if you try it on enwiki or commons which do have feeds set up.

1. doing something relating to "page previews" e.g. like this demo: https://github.com/AnandChowdhary/hovercard using https://en.wikipedia.org/api/rest_v1/#!/Page_content/get_page_summary_title
2. A reading list feature that allows you to add and remove articles (introduces developers to PUT, GET and DELETE and TODO apps are all the rage these days for hack projects) https://en.wikipedia.org/api/rest_v1/#!/Reading_lists/put_data_lists_id)

Both of those are outside the scope of this task too, as they don't use the Action API.

Both of those are outside the scope of this task too, as they don't use the Action API.

A follow up task highlighting our REST APIs would be super interesting though! From my experience not many people know about their existence and they are great APIs to introduce people to the richness our content given their lack of parameters. Is there a parent task better suited for capturing these suggestions?

Re #5, the contribution visualizer: There's this highly thorough tool for viewing contributions currently available (https://xtools.wmflabs.org/ec) -- we could take design inspiration from it, and pare the info displayed down to number of contributions per day, for the purposes of a tutorial on Action API usage.

Update on this task> Tutorials around three demo apps are published:

• https://www.mediawiki.org/wiki/API:Picture_of_the_day_viewer (thanks a tonne to @Martyav for working on this).
• https://www.mediawiki.org/wiki/API:Article_ideas_generator
• https://www.mediawiki.org/wiki/API:Nearby_places_viewer

Also added a new section Tutorials to https://www.mediawiki.org/w/index.php?title=Template:API and linked the tutorials there.