Suggestion: Add the ability for users of Pinboard to connect Kagi to their Pinboard account via API, and pull results from the the user's saved Pinboard items into their Kagi search results.
There is probably a large overlap between Pinboard and Kagi users, and Pinboard users save items in Pinboard for later reading or to create a knowledge repository. However, having to search in both Pinboard and Kagi is cumbersome, and most people will default to searching Kagi — while neglecting to search the data they're already curated. Pinboard offers full-text indexing and archival of saved items, which means it would be cost-free for Kagi to query and get all results containing the searched keywords. Pinboard would handle getting the relevant saved items; Kagi would only need to display them.
If a user could search through Kagi and have their saved Pinboard items pulled in (ideally, clientside with no communications to Pinboard happening on Kagi's servers!), that would make Kagi a central place for the most relevant search results to that user.
In terms of the UX, I would expect there to be a section for "Pinboard Integration" in Settings > Personalized Results. The user would be able to enter their Pinboard API key (and, optionally, select if they want to only search public or private saved Pinboard items. [Public saved Pinboard items are listable via RSS feed]).
Then, when the user makes any search on Kagi, a clientside request would be sent to Pinboard's API to find any results containing the query (Pinboard would handle the indexing and searching work of finding the query in a saved item's title, description, or, if archived, full-text). Pinboard would then return the relevant results for display at the top of Kagi search results. The Pinboard results could be lazy-loaded in. They would be displayed at the top, as they would be the most relevant to the user due to having been manually curated and saved by them.
I would be willing to fund a bounty on this.
Relevant Links: