Connect Claude to Socialync
Draft, schedule, and publish social media posts from Claude, ChatGPT, Cursor, or any AI assistant that supports the Model Context Protocol.
Read this first: what MCP can do and how you stay in control
You are always the one who decides what goes live. Nothing publishes until you say so, either with a confirmation in chat or by approving it in the Socialync app.
What it can do
- Draft, schedule, and publish posts to all eight platforms: Facebook, Instagram, TikTok, YouTube, LinkedIn, X (Twitter), Threads, and Bluesky.
- Attach media. Up to 10 images as a carousel (from public URLs or images you paste into chat), and one video per scheduled post (from media you already uploaded to Socialync, or a public video URL).
- Schedule posts for the future within your plan's scheduling window, or publish right away.
- Read your analytics: views, likes, comments, shares, follower counts, and top-performing posts.
- List connections, check quota, and read post history, including which posts succeeded and which failed.
- Cancel a scheduled post and generate platform-optimized captions with Socialync's AI.
How publishing works (two ways)
- Draft flow (a hard approval gate). The assistant prepares a draft and you approve it in the Socialync app at your draft inbox. Nothing goes live until you tap Approve.
- Direct publish (you confirm in chat). The assistant shows you the exact caption, platforms, media, and timing, and only publishes after you say yes in the conversation. Every action is logged so you can always see what was posted and when.
Current limits
- Video is scheduled only. Immediate publishing is text and images. Video posts must be scheduled, because platform video processing takes a few minutes. TikTok and YouTube are video only, so they are scheduled only.
- You cannot paste a video file into chat. That is a limit of the chat protocol, not Socialync. Upload the video in Socialync first, then ask the assistant to use it.
- Editing an existing scheduled post. The assistant can cancel a scheduled post and create a new one, but cannot edit one in place. Use the Socialync app to edit.
- Platform rate limits still apply. X, LinkedIn, and the others enforce their own daily limits. Socialync surfaces these to the assistant, but the platforms themselves are the ceiling.
Setup (3 steps)
- 1Generate an API key
Open Socialync settings, scroll to API Keys, and tap “Generate Key.” You'll see the key once — copy it somewhere safe immediately. (Requires a paid plan — Premium or Business.)
Open API Keys - 2Add Socialync to your MCP client
In Claude Desktop, open Settings → Developer → Edit Config, paste the snippet below, and replace
YOUR_SOCIALYNC_API_KEYwith the key you just generated.{ "mcpServers": { "socialync": { "transport": { "type": "http", "url": "https://socialync-mcp-ntgtgrzanq-ue.a.run.app/mcp", "headers": { "Authorization": "Bearer YOUR_SOCIALYNC_API_KEY" } } } } }Other MCP clients (ChatGPT, Cursor, Cline, custom agents) use the same Streamable HTTP transport at
https://socialync-mcp-ntgtgrzanq-ue.a.run.app/mcpwith a Bearer token. Configuration shape may vary. - 3Restart Claude and try it
After restarting Claude Desktop, ask it something like:
“Draft a LinkedIn post about consistency in fitness for tomorrow morning at 9am.”Claude will create a draft. Open your draft inbox to review and approve it.
Things to try
Sample prompts that show off what the MCP server can do.
“Draft a Twitter post announcing our Q3 product launch and schedule it for next Monday at 10am EST.”
“Show me my top 5 performing posts this month and tell me what they have in common.”
“Which platforms am I connected to right now?”
“Compare my engagement rate this week vs last week across all platforms.”
“Draft the same announcement for LinkedIn and Threads, with a longer caption for LinkedIn and shorter for Threads.”
Where do drafts go?
When the assistant uses the draft flow, the post lands in your draft inbox and expires after 24 hours if you do not approve it. When you ask the assistant to publish directly, it posts after you confirm in chat and no draft is created.
Tools your AI can call
Reference for developers building custom agents.
list_profiles
List the Socialync profiles this API key is allowed to managelist_connections
List a profile's connected social platformslist_media
List media already in Socialync you can attach by mediaIdcreate_media_upload
Get presigned upload URLs for images or a video the assistant generatedfinalize_media_upload
Finalize an upload into a single mediaId ready to postcheck_quota
Check posting quota, plan, and per-platform daily limitscreate_post_draft
Draft a text or image post for immediate publish (you approve in the app)schedule_post_draft
Draft a post (text, image, or video) for a future time (you approve in the app)get_draft_status
Check whether a draft is pending, approved, rejected, or expiredapprove_draft
Publish a pending draft after the user confirms in chatpublish_now
Publish a text or image post immediately, after in-chat confirmationpublish_scheduled
Schedule a post (text, image, or video) directly, after in-chat confirmationget_scheduled_posts
List pending scheduled postsdelete_scheduled_post
Cancel a scheduled post, or a whole multi-platform groupget_post_history
Read recent post history with per-platform success and failureget_analytics
Aggregate analytics with period-over-period changesget_top_posts
Top-performing posts ranked by engagementgenerate_content
Generate platform-optimized captions with Socialync's AI