Postwith MCP server
Updated November 14, 2026
Postwith is a hosted MCP server for social media. Add one link to Claude, ChatGPT, Codex, Cursor, Gemini CLI or any MCP client, and your AI can post and schedule photos, videos and text to Instagram, Facebook Pages, Threads, TikTok, YouTube, Pinterest and LinkedIn. It shows you every version first, posts only after your OK, and reads back how each post did.
Server URL: https://mcp.postwith.app/mcp · Streamable HTTP · sign-in with OAuth, or an API key header for clients that can’t sign in.
Add it to your AI
| App | How |
|---|---|
| Claude (web, desktop, mobile) | Open Postwith in Claude’s directory and choose Connect. |
| ChatGPT | Plugins › Add › Add custom MCP server, paste the URL, leave Authentication on OAuth. Works on Plus; tested November 14, 2026. |
| Codex (app, CLI, VS Code) | codex mcp add postwith --url https://mcp.postwith.app/mcp, or Settings › MCP servers › Add server. |
| Claude Code | npx postwith claude-code, then /mcp to sign in. |
| Gemini CLI | gemini mcp add --transport http postwith https://mcp.postwith.app/mcp, then /mcp auth postwith. |
| Cursor and other MCP clients | Add a remote server with the URL. In Cursor’s mcp.json: {"mcpServers": {"postwith": {"url": "https://mcp.postwith.app/mcp"}}}. |
| Clients without sign-in | Make an API key in Settings › Developers and send Authorization: Bearer pwk_…. |
Step-by-step setup for each app is in Connect your AI. Before you add it, sign in at app.postwith.app and connect your social accounts, or turn on Practice mode to try it without posting.
Tools
Fifteen tools, each marked read-only or not, so your AI app can ask before anything changes.
| Tool | What it does |
|---|---|
list_ | Your connected social accounts and whether each can post |
list_ | Photos and videos in your Postwith media |
add_ | Adds a photo or video from a public link |
get_ | A one-time page to add a file from your phone or computer, since chat attachments don’t reach MCP servers |
check_ | Whether that file has come in |
list_ | A Pinterest account’s boards |
create_ | A draft for one or more accounts, from one video, up to 10 photos, or text for Threads and LinkedIn. Nothing is posted |
schedule_ | Schedules a draft after your OK, or posts it within a minute |
list_, get_ | Recent posts, each network’s version, its status and its link once live |
cancel_ | Stops a scheduled post |
list_ | Comments on a post’s Instagram, Facebook and Threads versions |
reply_ | Answers a comment from your account, after you OK the exact words |
get_ | How your Instagram, Facebook, TikTok and Threads posts did over 7, 30 or 90 days, and your best posts |
get_ | Your posting streak and milestones |
Built so nothing posts by surprise
- Drafts first.
create_postonly makes a draft. Your AI shows you each network’s version and callsschedule_postafter you say yes. - Your choices stay yours. For TikTok and YouTube, your AI asks who can see each post and whether a video is made for kids, and never answers for you. TikTok posts always wait for your OK.
- Official APIs only. Each account connects with the network’s own sign-in. Your AI never sees those sign-ins, and you can end its access anytime in Postwith › Settings › Your AI.
- Never twice. If a network doesn’t answer, Postwith checks what actually happened before it tries again.
Every post on record
Postwith keeps a record of every post: what it was, how it was made, and how it did, compared with its own account’s usual at the same age. That record is how your AI answers “what’s working?” and plans the next post. Today the comparisons come through the API and CLI (for AI tools that run commands, like Claude Code and Codex) and the dashboard’s Results › What works; they come to the MCP server with its next update.
Prefer code?
The same actions are in a REST API (https://api.postwith.app/v1, with an OpenAPI description) and a CLI (npx postwith). OAuth apps let your own product post for your users, with their OK. See API and CLI.
Questions
Is there an MCP server for posting to Instagram?
Yes. Postwith’s MCP server posts to Instagram professional accounts, including photos, carousels of up to 10 photos, Reels and Stories, and also to Facebook Pages, Threads, TikTok, YouTube, Pinterest and LinkedIn profiles.
Do I need to run anything myself?
No. The server is hosted at https://mcp.postwith.app/mcp. You add the link to your AI app and sign in to Postwith; there’s nothing to install or host.
Which AI apps does it work with?
Claude (it’s in Claude’s connector directory), ChatGPT including Plus, OpenAI’s Codex, Claude Code, Cursor, Gemini CLI, and any app that can add a remote MCP server with OAuth or an API key header.
How much does it cost?
The MCP server comes with every Postwith plan. Plans start at $9 a month for 3 social accounts at launch prices (regular $19), after a 7-day free trial.
Add Postwith to your AI
One link, seven networks, and nothing posts without your OK.