Hosted MCP connectorSchedule social posts from inside Claude
Connect PostFast to Claude (web and desktop) and publish to 11 platforms without leaving the chat. Draft, schedule, approve, and pull analytics, just by asking.
https://mcp.postfa.st/mcpPaste this into Claude. Sign in with OAuth, no API key.
New to PostFast?
Create a free account, connect your social accounts once, then drive everything from Claude.
Already using PostFast?
Your workspaces, accounts, drafts, and analytics are already here. Add the connector and run them from Claude.
How to connect PostFast to Claude
- 1In Claude, open Customize, then Connectors.
- 2Click the plus, then choose Add custom connector.
- 3Paste the PostFast connector URL and leave the OAuth fields blank. Claude discovers them.
- 4Approve the sign-in. No client secret, no API key.
- 5In the composer, click the plus, choose Connectors, and turn PostFast on for the chat. Then ask: “Draft and schedule an Instagram post for Friday.”
Plan notes
- Custom connectors work on Claude Free, Pro, Max, Team, and Enterprise. Claude Free is limited to one custom connector.
- On Team and Enterprise, an Owner adds it once under Organization settings, Connectors; each member then connects under Customize, Connectors.
- Works on Claude web and Claude desktop.
What the connector can do
One connection brings your real PostFast accounts, workspaces, and analytics into Claude. It can create, draft, schedule, approve, and delete posts; list posts and pull analytics; work across multiple workspaces; and attach media by public URL or chat upload, across all 11 platforms.
Plan and draft
"Write three post variations and save them as drafts."
Schedule and publish
"Schedule these to Instagram and Facebook for Thursday 10am."
Approve and delete
"Mark these two drafts approved." or "Delete the post I just created."
Manage accounts and workspaces
"Which accounts are connected? Switch to my client’s workspace."
Attach media
"Use this image, or pull the photo at this public URL."
Measure
"How did last month’s posts perform on Instagram and LinkedIn?"
Connect securely, no API key in the chat
- OAuth 2.1: you sign in on PostFast’s own screen. No password sharing, no API key, no client secret.
- Scoped read vs write access that you control, per tool, in the client UI.
- Every request re-checks your workspace permissions before it runs.
- Revoke access anytime, from the AI client or from PostFast.
- Agency connect links let clients connect their own accounts without sharing logins.
| Platform | Limits per post | Media |
|---|---|---|
| X | Up to 4 images or 1 video; 280 chars (4,000 with X Premium) | Optional |
| Up to 10 images + 10 videos; 2,200 chars, 30 hashtags | Required | |
| Up to 10 images + 1 video | Optional | |
| TikTok | 1 video or up to 10 images; 4,000 chars | Required |
| Up to 10 images + 1 video | Optional | |
| YouTube | 1 video, no images; title max 100 chars | Required |
| Threads | Up to 10 images + 10 videos; 500 chars | Optional |
| Up to 5 images or 1 video; title 100, description 800 | Required | |
| Bluesky | Up to 4 images or 1 video | Optional |
| Telegram | Up to 10 images + 3 videos | Optional |
| Google Business Profile | 1 image; 1,500 chars | Required |
Videos are capped at 250MB (Telegram 50MB, Bluesky 100MB). Media is required on TikTok, YouTube (video), Instagram, Pinterest, and Google Business Profile, even for drafts.
Attaching images and video
Claude cannot reliably read files from your computer, so give it a public image URL (“attach the image at https://...”) or work from a URL you provide.
Supported: JPEG, PNG, GIF, WebP, MP4, WebM, MOV. TikTok, Instagram, YouTube, Pinterest, and Google Business Profile require at least one media item, even for drafts.
Example prompts that work
Other ways to connect
Prefer ChatGPT? See the ChatGPT connector. Using the Claude Code CLI for terminal-first scheduling? See the Claude Code integration. Working from another IDE? See the social media MCP server.
Frequently Asked Questions
Is it secure?
Yes. You connect over OAuth 2.1 and sign in on PostFast’s own screen, so no password, API key, or client secret ever goes into the chat. Access is scoped (read vs write), every request re-checks your workspace permissions, and you can revoke it anytime.
Does it cost extra, and which plan do I need?
The connector is included on every PostFast plan and the 7-day trial, with no tier gating. On the Claude side it works on Free, Pro, Max, Team, and Enterprise. Claude Free is limited to one custom connector, so make it count.
Which platforms can I post to?
All 11: X, Instagram, Facebook, TikTok, LinkedIn, YouTube, Threads, Pinterest, Bluesky, Telegram, and Google Business Profile.
How long does setup take?
About two minutes once you have a PostFast account with your social accounts connected.
Can I manage multiple workspaces or clients?
Yes. The connector can list your workspaces and act in any of them, and it can generate agency connect links so a client connects their own accounts without sharing logins.
What if a post fails?
The usual cause is a disconnected account. PostFast flags disconnected accounts before scheduling, so reconnect the account and ask again.
What analytics can it pull?
Impressions, reach, likes, comments, and shares for published posts on Instagram, Facebook, TikTok, Threads, YouTube, LinkedIn company pages, and Pinterest Business.
Is this the same as Claude Code?
No. This is the in-app Claude connector for the Claude web and desktop apps. If you work in the terminal, see the Claude Code integration instead. Both schedule to the same 11 platforms.
Start posting from Claude
One connector. 11 platforms. Zero app switching.
https://mcp.postfa.st/mcp