What does Endeavor actually do? Trying to figure out if it fits my use case

Good questions, and your use case is close to the middle of what this was built for. Straight answers:

1. Multiple accounts per platform, yes. This is the part most schedulers get wrong. When a campaign fires, it fans out to *every* connected account on the platforms you selected, not one. So 9 clients' Facebook Pages all get a post from a single campaign run. Each account gets its own caption variation, so you're not blasting identical text across pages that Meta can see are related.

2. Clipping runs unattended. You point a campaign at either a niche (it pulls trending long-form in that niche) or a specific YouTube channel (it grabs the newest upload), and it clips, captions, and posts on a schedule. Face tracking keeps the speaker centered in the 9:16 crop, and captions are burned in automatically. You do not sit and watch renders.

3. No hard cap on pool size. Pools are meant to be built up over time. The scheduler picks from the pool at random, and a 48-hour rule per account stops the same video hitting the same account twice in that window. Bigger pool, less repetition.

The one thing I'd flag for an agency specifically: you'll want each client's accounts connected under your own login rather than nine separate logins. Connections page handles that fine.

That's the answer I needed, thanks. The multi-account fan-out is the actual reason I'm switching. My current tool makes me duplicate the same post nine times by hand.

Follow-up: when it makes a "caption variation," is that an AI rewrite that's going to hallucinate something dumb into a dental client's post?

Fair concern, and no. The default caption variation is not an LLM rewrite. It works off variants you supply on the pool, plus deterministic reordering and hashtag rotation. Nothing gets invented that you didn't write.

For regulated-ish clients (dental, medical, legal) that's the mode you want. You write the safe copy once, the system varies the surface, and the claims never change.

Piggybacking since I had the same doubt. I've been running 4 accounts for about six weeks. The no-AI caption thing was what sold me too. I had a client get burned by another tool that "improved" a post and invented a discount that didn't exist.