TikTok is the only video platform here that will take a landscape or a square cut, not just a vertical one.
https://api.antwork.io/mcpClaude connects to Antwork as a custom connector: one URL pasted into the Add custom connector dialog, then a browser authorization. The same connector works in Claude Desktop once you are signed in.
Custom connectors need Claude Pro, Max, Team or Enterprise.
“Write a TikTok caption for this video in my voice, with a hook in the first line.”
“Schedule this TikTok for Friday evening and tell me why that slot.”
“Take the hook from my best TikTok and write three more like it.”
“How are my TikTok posts doing compared to last month?”
Antwork does not answer with a wall of text. It renders real, clickable panels inside Claude — the same interface you would get in a dashboard, in the conversation you are already in. No other social tool does this.
Shipped something small this week that fixed a big thing. Our token refresh ran daily but checked TikTok against a five minute expiry window, so it could only ever catch a token that happened to die inside those five minutes. It never did. Accounts just went quiet.
TikTok accepts 9:16, 16:9 and 1:1. YouTube Shorts takes 9:16 and nothing else, so a cut that posts here will not always go straight to Shorts, and the agent checks before it tries.
No images, no carousel, no text-only post. If you ask for a set, the agent tells you at the drafting step rather than building something the publisher will reject.
Up to 4096 by 4096, the highest resolution ceiling Antwork will accept anywhere, with ten minutes of runtime at 4 GB. Nothing you export will be too detailed for it.
The caption runs to 2,200 characters, the same as Instagram. Almost nobody uses it, which is most of the reason a written hook does well here.
One command, one consent screen, and TikTok is something you can just ask for.