MCP server to post to social media — let Claude post for you

Updated October 25, 2026 · Live: TikTok, Instagram, Facebook Pages, YouTube, LinkedIn (personal profiles), Bluesky, Telegram, Mastodon, Discord, X (paid plans) · Not available yet: Threads, Reddit, Pinterest.

Post MCP: the tools that publish

Most MCP servers read: they search, fetch or summarize. A post MCP server writes to the outside world, so what matters is which tools publish, when, and how the agent learns the result. These are PostWire's, as its live tools/list describes them on Oct 26, 2026:

Videos and photos the agent cannot attach go through create_upload_link: a single-use page, valid 24 hours, where you pick the file from any device (up to 1 GB).

Use PostWire in Claude (connector directory)

PostWire is listed in Claude's connector directory. No API key to copy: you sign in with your email and a 6-digit code (it creates a free account if you don't have one).

1. Open the listing and press Connect — Claude on the web, desktop or phone.
2. Sign in with your email in the PostWire window and press Allow access.
3. Ask: "Write this for LinkedIn and Bluesky and post it" or "Plan next week of posts about my bakery". Claude asks before anything is published.

Add to Claude   Full guide for Claude · agent.md · ChatGPT

What is an MCP server?

The Model Context Protocol (MCP) is an open standard for connecting AI agents to external tools and data. An MCP server advertises a set of tools — named functions with typed inputs — that a client like Claude Desktop, Claude Code, or Cursor can discover and call during a conversation. When you ask Claude to "post this to Bluesky," the model picks the right tool, fills in the arguments, and the MCP server does the real work.

Most "social media APIs" are REST endpoints you have to wire up yourself. PostWire is built MCP-first: the same posting engine is exposed as an MCP server and a REST API, so an agent can use it with zero custom integration code.

The PostWire tools

PostWire keeps the surface area small and predictable so agents reason about it reliably:

• generate_posts (Smart Distribute) — from a single idea, writes a native draft for each platform, within each network's limits. Nothing is published.
• post_to_social / schedule_post — publish now, at a time, or in the brand's next free queue slot; per-platform results with the network's own error and how to fix it.
• plan_week — one topic, up to 7 days, a different angle each day, one version per network, queued at your hour and timezone.
• create_upload_link / get_uploaded_file — a 24-hour page to upload a photo or video from any device, since chat attachments don't reach connectors.
• create_connect_link — a one-hour link to connect a network (optionally to a specific brand).
• create_client_link, list_clients, client_report, invite_teammate — for agencies, one brand per client: a private 30-day page where the client connects their own accounts (no password shared) and approves posts, every client at a glance, the monthly report, and a teammate's invitation that a person sends from the dashboard.
• my_account, list_brands, create_brand, list_platforms — plan, usage against each limit, businesses and their connected accounts.
• list_scheduled_posts, cancel_scheduled_post, get_post_status — the queue, and each post's status and link.
• get_upgrade_link — plans with price and what each includes, and a checkout link (nothing is charged from the chat).
• get_post_performance — your published posts ranked against your own median on each network (views on YouTube; likes, reposts and replies on Bluesky, Mastodon and Instagram). Networks whose numbers cannot be read are listed with the reason, never as zero.
• replicate_top_post — drafts on a new topic modelled on one of your best posts (paid plans). Nothing is published.

Add PostWire to Claude Code, Codex, Cursor, Copilot, Windsurf or Gemini CLI

The one-line way: give your agent set up https://postwire.io/SKILL.md (read it raw, e.g. with curl). The skill adds the server for whichever client it runs in, signs you in, connects your first network and ends with your first post published, after you approve each network's draft.

A whole week: the social-week skill turns a short brief into a 7-day content calendar with a native draft per network, shows it for your approval and schedules it with bulk_schedule. Install it in every agent on your machine with npx skills add https://postwire.io --skill social-week.

By hand: every client below connects to the hosted server https://postwire.io/api/mcp (Streamable HTTP). Where a browser can open, you sign in to PostWire (OAuth 2.1; a 6-digit email code creates a free account if you have none) and no key is copied anywhere. Without a browser, use an API key from the dashboard (API & MCP) kept in the environment variable POSTWIRE_API_KEY. Each format was checked against the client's own documentation on October 4, 2026.

Claude Code

claude mcp add --transport http --scope user postwire https://postwire.io/api/mcp
# then, inside Claude Code: /mcp → postwire → Authenticate

No browser: add --header 'Authorization: Bearer ${POSTWIRE_API_KEY}' (single quotes keep the variable, not the key, in the config). Details · Claude Code docs

OpenAI Codex

codex mcp add postwire --url https://postwire.io/api/mcp
codex mcp login postwire   # only if the sign-in did not start by itself

No browser: codex mcp add postwire --url https://postwire.io/api/mcp --bearer-token-env-var POSTWIRE_API_KEY. Details · Codex docs

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "postwire": { "url": "https://postwire.io/api/mcp" }
  }
}

If the sign-in does not complete, add "headers": { "Authorization": "Bearer ${env:POSTWIRE_API_KEY}" }. Details · Cursor docs

GitHub Copilot in VS Code (MCP: Open User Configuration)

{
  "servers": {
    "postwire": { "type": "http", "url": "https://postwire.io/api/mcp" }
  }
}

The root key is servers, not mcpServers: a config copied from another client is ignored without an error. Use it from Copilot Chat in agent mode. Details · VS Code docs

Windsurf (~/.codeium/windsurf/mcp_config.json)

{
  "mcpServers": {
    "postwire": {
      "serverUrl": "https://postwire.io/api/mcp",
      "headers": { "Authorization": "Bearer ${env:POSTWIRE_API_KEY}" }
    }
  }
}

Windsurf is now Devin Desktop, whose docs put the file at ~/.config/devin/mcp_config.json (%APPDATA%\devin\mcp_config.json on Windows). Details · Devin Desktop docs

Gemini CLI

gemini mcp add -s user --transport http postwire https://postwire.io/api/mcp
# then, inside Gemini CLI:
/mcp auth postwire

-s user makes it global (the default is the project). Sign in rather than passing a key in a header: Gemini CLI blanks variables whose name contains KEY or TOKEN. Details · Gemini CLI docs

CoreSpeed, Composio or another MCP gateway

Add https://postwire.io/api/mcp as a remote MCP server: step-by-step for each gateway.

Then ask: "Write this for LinkedIn and Bluesky, show me both, and post them when I say yes." The agent calls generate_posts, shows each draft, and calls post_to_social only after you approve. All clients side by side: MCP config compared.

JSON-RPC tool-call example

Under the hood, MCP tool calls are JSON-RPC. Here is what the client sends when the agent invokes post_to_social:

{
  "jsonrpc": "2.0",
  "id": 7,
  "method": "tools/call",
  "params": {
    "name": "post_to_social",
    "arguments": {
      "platforms": ["bluesky", "mastodon", "discord"],
      "text": "Shipping PostWire MCP today 🚀",
      "photo_url": "https://cdn.example.com/launch.png"
    }
  }
}

Or call the REST API directly

If you're not using an agent, the same action is one HTTP call. Copy-paste (every endpoint, with Node and Python too, is in the API docs):

curl -X POST https://postwire.io/api/post \
  -H "Authorization: Bearer YOUR_POSTWIRE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "platforms": ["bluesky", "telegram", "mastodon", "discord"],
    "text": "Shipping PostWire MCP today 🚀",
    "photo_url": "https://cdn.example.com/launch.png"
  }'

Smart Distribute: one prompt, a native post per platform

Posting the same text to every network is what algorithms penalize. PostWire's Smart Distribute tool (generate_posts, also POST /api/generate) takes one prompt and optional media and returns the best native post for each platform — correct character limits and hashtag rules, an SEO title and tags for YouTube, hook-first captions for TikTok/Reels, professional framing with the link in the first comment for LinkedIn, CamelCase hashtags for Mastodon. Your agent can generate, review, then publish — and generation is included in the plan price.

Platform availability (October 2026)

Step by step, per network: TikTok MCP server · Instagram MCP server · YouTube MCP server · LinkedIn MCP server · Facebook Pages MCP server · Bluesky MCP server · Mastodon MCP server · Telegram MCP server · Discord MCP server · X MCP server.

PostWire vs Ayrshare for agents

Ayrshare's MCP server can post, but it authenticates with a static Bearer key (no OAuth connector for claude.ai), X needs your own developer app, and plans start at $149/month. PostWire's MCP server takes an API key or an OAuth 2.1 sign-in (so it can be added to Claude as a custom connector); where it differs is that generate_posts writes a native post per network from one prompt, with writing included in the plan. On price, ten client businesses sit on PostWire's $29 Pro plan against $299 for Ayrshare's comparable Launch plan.

See the full breakdown on PostWire vs Ayrshare.

Per-brand pricing

FAQ

What is a post MCP server?

An MCP (Model Context Protocol) server whose tools publish posts, so an AI agent like Claude posts to social networks itself instead of handing you text to copy. PostWire's (https://postwire.io/api/mcp) has 26 tools on its live tools/list (Oct 26, 2026): post_to_social publishes now, schedule_post queues for later, bulk_schedule takes a CSV, create_recurring_post repeats a post and get_post_status reads the result back, across TikTok, Instagram, Facebook Pages, YouTube, LinkedIn (personal profiles), Bluesky, Telegram, Mastodon, Discord and X (paid plans).

What is an MCP server for posting to social media?

An MCP (Model Context Protocol) server exposes tools that an AI agent like Claude can call. PostWire's MCP server exposes 26 tools, including generate_posts, post_to_social, get_post_status, list_platforms and my_account — so Claude can actually publish posts to TikTok, Instagram, Facebook Pages, YouTube, LinkedIn (personal profiles), Bluesky, Telegram, Mastodon, Discord and X (paid plans) without you writing any glue code.

How do I let Claude post to social media?

In Claude on the web, desktop or phone, add PostWire from Claude's connector directory and sign in with your email: no API key. In Claude Code, run claude mcp add --transport http --scope user postwire https://postwire.io/api/mcp and authenticate from /mcp. Claude then writes a draft per network with generate_posts and publishes with post_to_social after you approve.

Which platforms can PostWire post to?

PostWire publishes to TikTok, Instagram, Facebook Pages, YouTube, LinkedIn (personal profiles), Bluesky, Telegram, Mastodon, Discord and X (paid plans). Threads, Reddit and Pinterest are not available yet. Each account is connected through the platform's official flow, and PostWire only posts the content you explicitly send.

Does Ayrshare have an MCP server that can post?

Yes. Ayrshare's remote MCP server can post (its create_post tool publishes to several networks), but it authenticates with a static Bearer key (no OAuth connector for claude.ai), X needs your own developer app, and plans start at $149/month.

How much does PostWire cost?

Per-brand pricing, where a brand is one business with all of its networks: Free $0 (1 brand, 10 posts/month, 2 networks per post), Starter $9 (3 brands), Pro $29 (10), Agency $99 (50) and Scale $299 (200), with a 14-day refund on paid plans. Ten businesses on Ayrshare's Launch plan cost $299/month (pricing page, Sept 26, 2026); on PostWire, $29.

Is there a free social media MCP server?

Yes. PostWire offers a real MCP server on a free tier, with generate_posts and post_to_social tools so your agent can draft and publish without paying anything first.

What is the best MCP server for social media?

Several MCP servers can publish (Buffer, Metricool, Hootsuite, Blotato, Typefully, Postiz, Upload-Post, Zernio, Ayrshare and PostWire among them). PostWire both drafts native per-platform posts and publishes them across 10 networks from a single server; as of Sept 2026, we couldn't find another hosted API that writes a different native post per network from one prompt, in one call.

Can ChatGPT or Claude use a social media MCP server?

Yes. PostWire's hosted MCP server (https://postwire.io/api/mcp) signs in with OAuth 2.1 or an API key. It has been listed in Claude's connector directory since 26 Sept 2026 (add it from https://claude.ai/directory/bc01e7da-eba7-4754-9e88-6cacae80f000), it works in Claude Code, Cursor and custom agents, and the ChatGPT app was submitted to OpenAI's review on 27 Sept 2026 (not live in ChatGPT yet).

How do I make an AI agent post to social media?

Connect PostWire's MCP server to your agent; it calls generate_posts to draft native posts and post_to_social to publish them across platforms.

Will posting via an AI assistant get my account flagged as automation?

Not when you publish through official platform APIs, which is how PostWire posts — there's no scraping or browser automation.

What MCP tools does PostWire expose?

The hosted server (https://postwire.io/api/mcp) exposes 26 tools, including generate_posts, post_to_social, schedule_post, plan_week, create_upload_link and create_connect_link. The local npm package (npx postwire-mcp) exposes 5: generate_posts, post_to_social, get_post_status, list_platforms and my_account.

Using a specific client? The config differs per client and a copied one fails silently — Claude Desktop, Claude Code, Codex, Cursor, VS Code, Windsurf and Gemini CLI compared.

Also listed on Smithery, Glama, PulseMCP and the official MCP registry — or install straight from npm / GitHub.