I started by solving this for myself. Then sold it as a service. Now I'm turning it into a product.
A few years ago I was running my own projects and needed to post consistently across platforms.
I tried Buffer. Hootsuite. Later API, Zapier native integrations.
None of them did what I actually needed: take content from my workflow and publish it programmatically, without logging into a dashboard, without manual steps, without another subscription UI I had to learn.