Social media MCP server for Claude, ChatGPT, and other AI agents

What the UniPost MCP server can do

Your agent connects to one server URL and gets 7 tools.

• list_accountslists the social accounts in your workspace, with each account's platform and username, and flags any that need reconnecting.
• list_postslists posts by status (pending approval, scheduled, publishing, posted, failed). Pending posts come with their approval link.
• schedule_postcreates a post for 1 to 10 accounts at a time you pick, from now up to a year ahead. Text can run to 3,000 characters. Attach up to 10 images or videos as public https links, and UniPost downloads them.
• approve_postapproves a pending post. Posts that include TikTok, and posts a teammate's agent created, can't be approved this way; they're approved at the approval link.
• cancel_postdeletes a post that hasn't published yet, whether it's pending, scheduled, or failed.
• get_analyticsviews, likes, comments, and shares for published posts, by platform, plus your top posts. Only TikTok reports these to UniPost today.
• get_x_allowancehow many X post credits are left this month, and how many more times each X account can post in the next hour and day.

Your agent works inside one workspace, the one you chose when you signed in. It can't see other workspaces.

How approval works

Every post your agent schedules stays pending until it's approved. When the agent calls schedule_post, UniPost saves the post as pending_approval and returns an approval link. The post doesn't go to any network while it's pending.

You can approve it in three ways: the approval link, the dashboard, or your agent.

1. Open the approval link, check the text, media, and time, and approve it there. For TikTok, this is also where you pick the post's privacy setting.
2. In the UniPost dashboard, under Overview → Needs attention.
3. Tell your agent to publish it, and the agent calls approve_post.

An approved post publishes at its scheduled time, or right away if that time has already passed. If you change your mind first, ask your agent to cancel it, or cancel it in the dashboard.

Your agent can approve a post it scheduled for you, so tell it to show you the full text, images, and time first. UniPost's server instructions tell agents never to approve a post you haven't seen and agreed to. If a teammate's agent created the post, your agent can't approve it; it has to be approved through the link.

Posts you write yourself in the dashboard skip this step. Clicking Schedule post or Post now there counts as your approval.

Read how approval works

Connect your agent in 4 steps

1. 1

   Create a free UniPost account and connect a social account.

   Create a free UniPost.ai account and connect a social account. Takes about a minute.

2. 2

   Add the MCP server to your agent.

   The URL is the same for every client:

   https://mcp.unipost.ai/mcp

   • Claude
   • Claude Code
   • ChatGPT
   • Codex
   • Cursor
   • Grok Bot
   • Gemini CLI
3. 3

   Sign in and allow access.

   Sign in to UniPost in the browser window that opens, choose the workspace the agent may use, and select Allow. Only workspace owners and admins can authorize agents.

4. 4

   Ask for your first post.

   > List the social accounts in this workspace.
   > Prepare a post for tomorrow at 9 a.m. in my timezone. Show me the full text and destination accounts before you publish it.

   Your agent returns an approval link. Approve the post there, or in the dashboard under Overview → Needs attention.

Sign-in uses OAuth with a browser window, so you don't paste a password or key into your agent. If a client can't finish the sign-in, create a key under API keys and send it as a bearer token.

Which networks the MCP server publishes to

Each network takes different media. LinkedIn profiles take text, up to 9 images, or one video. TikTok and YouTube take exactly one video. Facebook Pages take text, images, or one video. X takes text, up to 4 images, or one video. If a post doesn't fit a network, schedule_post returns an error that says why, and nothing is saved.

X charges UniPost per post, so X posts use credits. A plain post uses 1 credit and a post with a link uses 13. Free accounts get 10 credits a month, and each X account can post up to 10 times an hour and 25 times a day. Your agent can check what's left with get_x_allowance.

Want more on LinkedIn? LinkedIn MCP server: profiles, limits, and setup

Want more on X? X MCP server: credits, limits, and setup

Social media MCP servers compared

Each of these schedulers has an MCP server. They differ in which networks they publish to, what's free, and whether an agent's posts wait for review. Each competitor cell below comes from that company's own pages, checked October 20, 2026.

UniPost wrote this comparison. Every competitor here publishes to networks UniPost doesn't yet, including Instagram, so if you need those today, one of them may fit better. Sprout Social: An official MCP server for ChatGPT only, covering TikTok analytics. It can't publish. Later: No official MCP server. A paid third-party connector exists. Check each vendor's page before you choose.

Sources (checked October 20, 2026): buffer.com/pricing.md · buffer.com/pricing · buffer.com/mcp · developers.buffer.com/llms.txt · developers.buffer.com/guides/integrations/mcp.md · zernio.com/pricing · zernio.com/llms.txt · docs.zernio.com/llms.txt · docs.zernio.com/for-you/platforms.mdx · docs.zernio.com/mcp.mdx · www.post-bridge.com/pricing · www.post-bridge.com/mcp · www.post-bridge.com/llms.txt · www.post-bridge.com/llms-full.txt · postiz.com/pricing · postiz.com · docs.postiz.com/general/approvals.md · docs.postiz.com/mcp/introduction.md · docs.postiz.com/general/settings/developers.md · github.com/gitroomhq/postiz-app · www.hootsuite.com/plans · www.hootsuite.com/integrations/mcp · developer.hootsuite.com/docs/faq · help.hootsuite.com/s/article/connect-social · help.hootsuite.com/s/article/about-mcps

Pricing and limits

UniPost has no plans. You pay per connected account. Your first 2 connected accounts are free. After that it's $3, $1, and $0.50 per account as you add more. The MCP server, approvals, analytics, and unlimited teammates come with every account, including the free ones. Free accounts include 500 agent tool calls a month.

Limits to know before you connect

• Instagram and LinkedIn company pages aren't available yet.
• 3,000 characters per post and 1 to 10 accounts per call.
• Up to a year ahead for agents. In the dashboard, the earliest you can schedule is 15 minutes out, or use Post now.
• Media must be a public https link: JPEG, PNG, GIF, or WebP up to 8 MB, or MP4, MOV, or WebM up to 1 GB. The host has to send a file size (Content-Length).
• 60 agent requests a minute per workspace.
• Analytics only from TikTok today. LinkedIn profiles and X don't report post numbers to UniPost yet.
• Reconnect LinkedIn when its sign-in expires. UniPost refreshes X, TikTok, and YouTube sign-ins itself. For LinkedIn and other networks it doesn't refresh, list_accounts marks the account as needing reconnect, and scheduling to it fails until you reconnect it under Connections.

Scheduling by hand instead? Read our guide to scheduling LinkedIn posts.

All limits

Social media MCP server FAQ

What is a social media MCP server?

It's a server that gives an AI agent tools to post on social media. MCP (Model Context Protocol) is the standard Claude, ChatGPT, Cursor, and other agents use to call outside tools. UniPost's server gives your agent tools to list your accounts, schedule and cancel posts, and read analytics. Every post your agent schedules stays pending until it's approved.

Which AI agents work with UniPost?

Any MCP client that connects over HTTP. There are setup pages for Claude, Claude Code, ChatGPT, Codex, Cursor, Grok Bot, and Gemini CLI. Most sign in through the browser with OAuth; Cursor and Gemini CLI can also use an API key if the sign-in doesn't finish.

Can my agent post without me?

Every post your agent schedules is saved as pending and stays pending until it's approved, through its approval link or in the dashboard. Ask your agent to show you the post first.

Which social networks can it post to?

LinkedIn profiles, X, and TikTok today. Facebook Pages and YouTube are in beta while each platform reviews UniPost: Facebook Pages open to everyone once Meta approves, and YouTube uploads are private until Google's review passes. Instagram (business and creator accounts) is coming soon, also pending Meta's approval, with LinkedIn company pages after that. LinkedIn MCP server.

Is the UniPost MCP server free?

The first 2 are free, then $3, $1, and $0.50 each as you add more. The MCP server comes with every account, free ones included, and there's no credit card for the free ones. See pricing.

Do I need to give my agent my social media passwords?

No. You connect each social account yourself in UniPost under Connections. Your agent signs in to UniPost, not to your social networks, and its tools return account names and ids, never your social logins or tokens. When you authorize an agent, you pick the one workspace it can use.