How will you graph it all or draw correlations ?
For dashboard, I started with health related data, because feel like other stuff (like 'histogram of my tweets' would be amusing, but not super useful immediately), and don't really expect any interesting quantified self insights from it.
I'm gradually figuring out 'generic' ways to compute, plot and examine correlations, e.g. here https://github.com/karlicoss/dashboard/blob/708eb183130de31e...
In general I'd like to have some automatic system which can consume all of my data and suggest interesting correlations in almost unsupervised way.
(got more notes/possible implementations on it here https://beepb00p.xyz/exobrain/projects/dashboard.html#mtvtn )
But basically I think the answer is 'no' -- there are so many different 'APIs' (quoted because often there aren't proper apis, you have to scrape, export manually etc.), that very few people attempted to unify it.
I have some thoughts on how such system could work like, described here https://beepb00p.xyz/sad-infra.html#data_mirror and here: https://beepb00p.xyz/exports.html . The export tools I wrote are the first order approximation of this vision -- seems robust enough for me so far, so now I'm working on connecting it to other tools and looking to cooperate with other people.
Basically so far I was solving the 'data import/scraping' part, but now finally starting to connect it elsewhere now that it's somewhat unified and normalized.