Automate Instagram with Cursor
Instagram is one of only two places here where images and video can share a post, and the only one that will not take a PNG.
Cursor installs Antwork from a single click. It is the shortest setup of any client here — no command, no config file, no URL to copy.
Connect it
- 01Click Add to CursorCursor opens and asks you to confirm the install. There is nothing to paste: the server name and URL travel inside the link.
- 02Authorize in the browserThe first Antwork tool call opens an OAuth consent screen. Approve it once and the token refreshes itself from then on.
- 03Connect the social accountAsk Cursor to connect your account and it returns a connect link per platform. Antwork holds and refreshes that token so publishing does not silently break weeks later.
What you can say once Instagram is connected
“Draft an Instagram caption for this photo in my voice, with three hashtags at the end.”
“Turn this carousel of five images into an Instagram post and schedule it for Saturday.”
“Rewrite my last Instagram caption with a stronger first line.”
“Which of my Instagram posts got the most engagement this month?”
What is different about Instagram
Only hereJPEG only
Instagram accepts .jpg and .jpeg and nothing else. A PNG, which is what most design tools export by default, is refused. Antwork checks the extension when you attach rather than letting you find out at publish.
A carousel does not have to be all one thing
Up to ten items in a post, and they can be images and video together. Most platforms here force you to pick one kind; this is not one of them.
There is no landscape
Image ratios are 4:5, 1:1 and 1.91:1, and video is 9:16, 1:1 or 4:5. Nothing 16:9 fits, so a cut made for YouTube needs recutting before it comes here.
Fifteen minutes, ten times over
Each video can run fifteen minutes at 300 MB, and ten of them can sit in one post. The limit you will hit first is almost never the length.
Questions
- Do I need an API key to connect Cursor?
- No. Antwork connects over OAuth — you approve a consent screen in the browser and you are done. There is no key to generate or paste into a URL, which is how most social MCP servers handle it.
- Do I need a paid account?
- No. Your first two connected accounts are free forever, with unlimited posts and workspaces, and there is no plan gate on MCP access.
- Will Cursor post without showing me first?
- Not unless you ask it to. Drafting and publishing are two separate steps: the agent writes, renders the post card, and only publishes when you confirm.
- Does the writing sound like AI?
- Antwork hands the agent that account's recent posts, along with how each performed, and the agent writes to match them. On Instagram that includes writing to the length the format rewards, up to 2,200 characters.
Never leave Cursor to post again.
One command, one consent screen, and Instagram is something you can just ask for.