Been working on XreplyAI for a while. It's an AI social tool for solo founders. Last week I shipped Auto DM: every time you get a new follower on X, it automatically sends them a personalized DM. You set the template once, and it handles the rest. Rate limited to keep it from triggering spam filters.
The interesting part was the infrastructure. To get around paying for webhooks, we snapshot your existing followers on first run so you don't blast everyone you already have. Then it polls for new followers and only fires on new ones.
What I'm really excited about is what's next: Instagram DMs. The demand is there but Meta's API approval process for DM access is brutal. Weeks of review, restricted permissions, a lot of back and forth. We're in the middle of it.
LinkedIn is even wilder. To DM people who comment on your posts automatically, you need LinkedIn's Community Management API. It's gated behind a partnership review that has no clear timeline (They say 10 business day ish but when I reached out, they hit me with "experiencing a higher-than-usual volume of requests timelines are currently longer than expected" generic message. If anyone here has gone through that process, I'd genuinely love to hear how you navigated it.
The X version is live now. If you're a founder who gets 20-50 new followers a week and never has time to DM them. This is what it was built for.
Happy to answer questions about the technical side or the API approval gauntlet.