Announce a YouTube video on every platform
Give your assistant the link, title and thumbnail of a video that is already on YouTube. It writes an announcement for each platform, checks them, and publishes them to the accounts you connected after you approve.
Works on the free plan. Connect an assistant first if you have not: setup guides.
The prompt
My new video is live on YouTube: "How I plan a month of posts in one hour", [your video link]. Announce it now on LinkedIn, Facebook, Threads, Bluesky and Instagram with a version written for each platform. Use this thumbnail image: [your thumbnail link]. Show me the exact posts before anything goes out.
Swap in your own details. Example links and names are placeholders.
What the assistant does
Each step names the Socialync tool the assistant calls. A step with no tool is the assistant's own work or yours.
- 1
Collect the video details
Your assistant needs the video link, the title, a line about what viewers get, and a thumbnail as a public image link. If it can open web pages it can read them from the video page. Otherwise paste them in.
- 2
Check accounts and allowance
It picks the brand, confirms each platform is connected and reads your plan. X needs a paid plan, so on the free plan it leaves X out and says so.
list_profileslist_connectionscheck_quota - 3
Write a version for each platform
The link goes in the post text on LinkedIn, Facebook, Threads and Bluesky, or in the first comment where you prefer that. Instagram does not turn a link in a caption into a clickable link, so the Instagram version says the link is in your bio. The thumbnail is the image, which Instagram requires.
- 4
Check the post
It validates the exact post: text length per platform, the image type and aspect ratio, and connection health.
validate_post - 5
Show the post and wait, then publish
You see each platform's text, the image and the first comment. On your yes the post goes out right away, or it schedules a time you pick.
publish_nowpublish_scheduled
What you will be asked to confirm
- The text for each platform, the thumbnail and the link placement.
- Whether it goes out now or at a time you pick.
- The yes that sends it.
Socialync tells your assistant to show you the exact post and wait for your yes in the chat before it publishes, schedules, replies or cancels anything. The publishing tools are marked as destructive, so clients that honor that also ask you to allow each call. You can switch on a confirmation dialog on the API Keys page that shows the exact post inside clients that support it. Socialync records who approved each post and when.
What you need
Plan
The free plan works for every platform except X. Free allows 5 posts a calendar month, and one publish to many platforms counts as one post. Paid plans add X and unlimited posts.
Connected accounts
Each platform you want to announce on connected in Socialync.
Assistants
Claude (claude.ai, Desktop and Code), ChatGPT, Grok, Cursor, Codex and Gemini CLI connect to Socialync. Any other assistant that supports MCP can too.
Also
- A video that is already on YouTube, with its link, its title and a thumbnail as a public image link.
Example result
Illustrative example with made-up posts and numbers. It does not come from a real account, and yours will use your own content.
What the assistant shows before it publishes
Post 1 of 1, now
Platforms: LinkedIn, Facebook, Threads, Bluesky, Instagram
LinkedIn: "New video: how I plan a month of posts in one hour. The method, step by step: https://www.youtube.com/watch?v=EXAMPLE"
Threads: "New video is up. One hour, one month of posts. https://www.youtube.com/watch?v=EXAMPLE"
Instagram: "New video on YouTube: how I plan a month of posts in one hour. Link in bio."
Image: thumbnail.jpg
Reply yes to publish.
Limits that shape this recipe
- Socialync does not read your YouTube channel to build this post. The assistant works from the link and details you give it.
- This recipe announces a video that is already live. To publish the video itself from Socialync, see the film-once recipe: a scheduled YouTube post needs a video and a title.
- Immediate posts cover Facebook, Instagram, LinkedIn, X, Threads and Bluesky. TikTok and YouTube go through scheduled posts only.
- Instagram needs an image or a video on every post.
Connect your assistant first
You add Socialync once and sign in with your Socialync account. Then paste the prompt above. Setup guides:
More recipes
Post one update to every platform, worded for each
Write one announcement, get a version for each platform, and publish it after you approve.
Film once, schedule a week of TikTok, Reels and Shorts
Spread five clips from one filming session across the week on TikTok, Reels and Shorts.
Run a weekly review of what worked
Get a one minute review of last week: what grew, top and bottom posts, failures, next ideas.
All recipes
Every prompt in one list.