Write it once.
Post it everywhere.
Postzik sends one post to all your social channels at the time you pick, shaped to fit each platform. Or ask your AI assistant to do it for you.
10 free posts, no card needed. Works with Claude, ChatGPT and other AI assistants.
Your post
YouTube short
Draft
We tried 5 cold brews. The winner surprised us
Five cold brews, one blind taste test, and a very honest café team. Which one would you pick?
Title, description, tags and privacy
Run your social media from your AI assistant.
Postzik has a built-in MCP server, the standard way AI assistants use outside tools. Connect it once, then ask in plain words: plan a week of posts, write captions per platform, reschedule, check what went live.
Connect in under a minute
- In your assistant, add a custom connector with this address.
- Sign in to Postzik with Google and approve access.
- Ask it to post. There are no API keys to copy.
https://postzik.com/api/mcpWorks with Claude (web and desktop), ChatGPT, Claude Code, Cursor, Codex and any other MCP client. Developers can use an API key instead.
Your AI assistant
Postzik connected
What your assistant can do in Postzik
Check credits
How many posts you can still publish.
List channels and brands
Which accounts it may post to, grouped by brand.
Create and schedule
One post to many channels, each with its own text.
Edit or reschedule
Change a caption or move a post to another time.
Publish now or retry
Send a waiting post now, or retry a failed one.
Track results
See which posts are live, with links, or why one failed.
It only sees your own channels, is told to check with you before publishing, and uses the same credits as the app. Setup guide for each assistant
Four steps, and the last one is ours.
Under each step is the same idea explained as if you were ten.
- 1
Connect your channels
Sign in with Google and link YouTube, Instagram, TikTok and the rest. It takes a minute per channel.
Like telling the mail carrier where each of your friends lives.
- 2
Write your post once
Add your video or photo and a caption, then adjust what each platform needs: a title here, fewer words there.
Like writing one letter and adding a short P.S. for each friend.
- 3
Pick a time
Post now, or choose a day and time. Your posts wait on a calendar where you can still change them.
Like putting a “deliver on Tuesday” sticker on the envelope.
- 4
Postzik delivers it
At that time Postzik publishes to every channel you picked and shows you the live links. If a platform is busy, it tries again.
If a mailbox is closed it tries again, and if it still can't deliver, you get your stamp back.
Everything you need, nothing you have to learn.
Click through the parts of Postzik you'll use every day.
See your whole week at a glance
Every post sits on a calendar, colored by platform. Drag one to another day to move it, and see which posts are waiting and which are already live.
Mon
Tue
Fri
Pay for posts, not for months.
One credit publishes one post to one channel. Buy a pack when you need it. No subscription, and failed posts give the credit back.
Every new account starts with 10 free credits, so you can try it first.
Building your own app? Use the same engine.
Create an API key and schedule posts from your own code, with the same credits, retries and per-platform options.
curl https://postzik.com/api/v1/posts \
-H "Authorization: Bearer $POSTZIK_KEY" \
-H "Content-Type: application/json" \
-d '{
"brand": "Bean There Café",
"media_url": "https://example.com/coldbrew.mp4",
"caption": "We tried 5 cold brews ☕",
"scheduled_at": "2026-11-10T09:00:00+09:00"
}'Questions, answered simply.
What is Postzik, in one sentence?
A place where you write a social media post once and Postzik publishes it to all your channels, at the time you choose.
Do I need to be good with computers?
No. If you can write a message and attach a photo, you can use Postzik. Connecting a channel is a sign-in, like logging into the app itself.
Which platforms does it post to?
YouTube, TikTok, Instagram, Facebook, X, LinkedIn, Pinterest and Threads.
What is a credit?
One credit publishes one post to one channel. A post to three channels uses three credits. New accounts start with 10 free credits, and there is no monthly fee.
What happens if a post fails?
Postzik tries again when a platform is temporarily busy. If it still can't publish, the post is marked failed with the reason, and the credit goes back to your balance.
Can each platform get different text?
Yes. You write one post, then change the title, caption or hashtags for any platform. Postzik shows the character limit for each one.
Who can see my channels?
Only you. Each account sees and posts to its own channels, nobody else's.
Can my AI assistant use it?
Yes. Connect Postzik to Claude, ChatGPT, Cursor or another assistant that supports MCP, and ask it to schedule posts for you. Postzik tells it to check with you before posting.