Automate Instagram with Claude
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.
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.
Connect it
What you can say once Instagram is connected
You see it before it goes out
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.
- 01A post card with the draft, editable in place, with the publish and schedule buttons on it
- 02A month calendar of everything scheduled across every connected account
- 03Your media library as a thumbnail grid you can attach from
- 04A connections panel with a Connect button per platform
- 05A table of recent posts you can click into
Shipped something small this week that fixed a big thing. Our token refresh ran daily but checked Instagram 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.
What is different about Instagram
JPEG 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.
Instagram limits, as the server enforces them
Posts are capped at 2,200 characters, and the cap is enforced when you schedule or publish, not silently truncated.
- Max size
- 8 MB
- Per post
- 10
- Ceiling
- up to 1440x1440 · 4:5 / 1:1 / 1.91:1
- Max size
- 300 MB
- Per post
- 10
- Ceiling
- up to 1080x1920 · 15 min max · 9:16 / 1:1 / 4:5
- — 10 media items per post, in total.
- — Images and video can share a post.
These numbers are read at build time from the same rules file the publishers validate against, so this page cannot claim a limit the server does not enforce.
Questions
- Do I need an API key to connect Claude?
- 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. The free tier covers one workspace, two connected accounts and 20 posts per cycle, and there is no plan gate on MCP access.
- Will Claude 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 learns a voice profile per connected account by reading what you have already published there, and the agent drafts from that profile. On Instagram that includes writing to the length the format rewards, up to 2,200 characters.
Never leave Claude to post again.
One command, one consent screen, and Instagram is something you can just ask for.