This idea first came up here:

• Build HTML version of /content?sql=... #2112 (comment)

If datasette.render_template(...) takes an optional Context subclass as an alternative to a context dictionary, I could then use dataclasses to define the context made available to specific templates - which then gives me something I can use to help document what they are.

Also refs:

• Datasette 1.0 documented template context (maybe via API docs) #1510