Can you schedule Mastodon posts?

Yes, with a scheduler. Most Mastodon apps post right away. OmniSocials schedules Mastodon posts, polls and threads on one calendar with your other channels and publishes them on your server at the time you pick, within your server’s limits.

Which Mastodon servers work with OmniSocials?

Any Mastodon server. Type its address when you connect and sign in there. OmniSocials registers itself with your server for you, so there’s no app to set up. Each workspace connects one Mastodon account. When you connect, OmniSocials reads your server’s character limit, what a link counts for and its poll limits, and the composer checks your posts against them.

What can I post to Mastodon?

Text posts, posts with up to 4 images or one video, polls, and threads of 2 to 25 posts. The character limit follows your server, 500 by default. Every post goes out as public.

Can I add image descriptions?

Yes. Every image and video carries its own description of up to 1,500 characters, which Mastodon shows to people using a screen reader and behind the ALT badge.

How do polls work on Mastodon?

Write the question as the post text, add the answers and pick how long the poll runs, from 5 minutes to 30 days within your server’s range. A poll takes 2 to 4 answers by default, or as many as your server allows. You can allow several answers per person and hide the totals until the poll ends. A poll takes the place of images or video.

How do Mastodon threads work?

Write past your server’s limit and click Split into thread. OmniSocials cuts the text at the end of sentences into posts that each fit. You can edit, move and add posts, and give each one its own images. A thread has 2 to 25 posts and goes out as one chain of replies.

Which Mastodon analytics do I get?

Per post: likes, replies, reposts and poll results, plus quotes on servers running Mastodon 4.5 or later. For the account: followers, following and posts. Mastodon doesn’t report impressions or reach.

Can I answer Mastodon replies in OmniSocials?

No. The Social Inbox doesn’t cover Mastodon, so replies stay in your Mastodon app.

How much does OmniSocials cost?

One plan with every feature included: $10 per seat per month billed annually, or $12 billed monthly. Team members and client seats cost the same. Every account starts with a 14-day free trial.

Mastodon Scheduler: Posts, Polls & Threads

Name: OmniSocials for Mastodon
Brand: OmniSocials
Price: 10 USD
Availability: InStock

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Your AI agent writes and schedules your Mastodon posts and threads. You check everything in the composer and on one calendar.

Start Free Trial How it works

Claude is planning your launch post…

Supported platforms

FacebookPlan your Page posts, Stories and Reels together, and keep your next update ready to go.

Schedule Facebook posts

Formats

Every Mastodon format, from one composer. Posts, polls, images, video and threads, within the limits of your own server.

Posts that fit your server.
OmniSocials reads your server’s limits and checks every post against them.
Polls, the Mastodon way.
Pick how long it runs, allow several answers or hide totals until it ends.
Alt text on every image.
Up to 4 images, each with a description Mastodon shows behind the ALT badge.
Video that’s ready when it posts.
OmniSocials waits until Mastodon has processed the video, then sends the post.
Home
Omnisocials@omnisocialsnow
Mastodon threads are live in OmniSocials. Write the whole story in one go. When it runs past your server’s limit, Split into thread cuts it at the end of a sentence, and every part fits the limit your server sets. You can edit each part, move it, add one below and give it its own images, each with its own description for people using a screen reader. Schedule it once and the whole thread goes out together, as one chain of replies.
Omnisocials@omnisocialsnow
Up to 25 posts in one thread, from the composer, the API or your AI agent. No copy-pasting at the last minute, no watching the clock.
Omnisocials@omnisocialsOct 9
New in OmniSocials: Notable Days
ALT
41852
Threads of up to 25 posts.
Write past your server’s limit and split it into posts with their own images.

Analytics

See how every Mastodon post did, and when to post the next one

Likes
Reposts
Comments

Poll results
Best Time to Post
and more

MCP

Run your Mastodon account from your AI agent. Claude, ChatGPT or any MCP client reads your posts, finds what works and plans the next thread.

Read your latest posts
Compare likes and boosts
Find your best time

Write the thread
Schedule it
and more

Works with Claude, ChatGPT, Cursor and any MCP client, on every plan.

https://mcp.omnisocials.comSee the Mastodon MCP server

Mastodon API

One request.Any Mastodon server.

Publish posts, polls and threads to any Mastodon server without registering an app on each one. OmniSocials reads every server’s limits for you.

Explore the Mastodon API Read the docs

Real-time webhooks

Get an event the moment a Mastodon post is scheduled, published or fails. Signed payloads, sent straight to your endpoint.

POST /v1/posts/create

await client.posts.create({
  content: "Which SDK do you use first?",
  channels: ["mastodon"],
  scheduled_at: "2026-10-15T09:00:00Z",
  mastodon: { poll: {
    options: ["TypeScript", "Python", "Go"],
    expires_in: 86400, multiple: true,
  } },
});

Every format in one call

Posts, polls, images and video with descriptions, and threads of up to 25 parts through one request.

mastodon — claude — 80×24

✻ Welcome to Claude Code!

/help for help, /mcp for servers

turn the threads notes into a Mastodon thread for tomorrow 9am

omnisocials - list_accounts (MCP)()

Mastodon · @omnisocials

omnisocials - get_best_times (MCP)(platform: "mastodon")

Top slot: Thu 09:00

omnisocials - create_post (MCP)(mastodon: { thread_parts })

Scheduled · Thu 15 Oct, 09:00

Done. The 2-part thread goes out on Mastodon tomorrow at 9:00 AM.

>Try "how did the last thread do?"

From your terminal

Claude Code, Codex or Gemini CLI schedules your Mastodon posts and threads through the OmniSocials MCP server and agent skill.

Platform integrationComing soon

Your customers' Mastodon accounts, inside your product

Soon your customers connect their own Mastodon accounts on one page with your logo, and you post and report for each of them.

See platform integration

Your customerYou

AConnect your accountsAcme posts for Harbor Coffee

MastodonConnect

InstagramConnect

Facebook PageConnect

All workspacesThis month

Posts

18,419

Scheduled

1,212

Workspaces

247

Accounts

1,035

New workspacesView all

HHarbor Coffeecus_8f2k1

Just now

FFieldnotecus_5ha0cNone yet3 days ago

SStudio Nordcus_3m9xd

1 week ago

CCopper & Pinecus_j8v3t

2 weeks ago

BBloom & Cocus_q71ze

Sep 12

NNorthside Gymcus_w2p6r

Aug 30

Harbor Coffee

You

Control

Let your agent draft, and sign off before anything goes live

Approval Workflows
Team Review
Client Review

Your Account Only
Workspace Access
Official Mastodon API

Testimonials

Trusted by Agencies, Solo Founders, Developers & Small Businesses

Agency

Ansub Khan

Founder of Supafast

5 out of 5

“The MCP is the real game changer for me. It makes the whole workflow feel much faster and less messy.”

SaaS

Jens Schumacher

Co-founder of Released.so

5 out of 5

“I really like this app. I’ve tried quite a few other tools, but none of them managed to hit the sweet spot of simplicity and pricing the way Omnisocials does.”

Marketing agency

Niels Koelewijn

Founder of Frizzer

5 out of 5

“Very easy to use and very handy to schedule posts across platforms for my marketing agency.”

Trustpilot

Learn more. Guides, help and docs for Mastodon.

Guides

Help center

For developers

Frequently
Asked Questions

Robert LigthartFounder of OmniSocials

Ask me a question

Yes. Every Mastodon post goes out on its own at the time you pick, with no reminder to act on. A video finishes processing on your server before the post is sent. If a post fails on a temporary error, OmniSocials retries it up to 3 times, 15 minutes apart.

An automation can also repost what you publish on Mastodon to your other channels, or repost your posts from another channel to Mastodon. When a caption is too long for your server, you pick once: post it as a thread, cut it at your server’s limit, or skip the post.

Yes. Connect the OmniSocials MCP server to Claude, ChatGPT, Cursor or any other MCP client and ask in plain words: it writes, schedules and checks your Mastodon posts and threads, with a description on every image. With an approval workflow, nothing goes out before someone approves it.

Posts, polls, images, video and threads are also in the REST API and the official SDKs, and posts and threads in the CLI. Polls are made in the composer or through the API, not through the MCP server.

Webhooks tell your app when a post is scheduled, approved, rejected, published or failed.

Last updated: October 18, 2026

Still have a question?Ask Robert, the founder

Ask

Schedule Mastodon with your AI agent

Every Mastodon format, from one composer. Posts, polls, images, video and threads, within the limits of your own server.self.__wrap_n!=1&&self.__wrap_b("«R14qh5»",1)

Posts that fit your server.

Polls, the Mastodon way.

Alt text on every image.

Video that’s ready when it posts.

Threads of up to 25 posts.

See how every Mastodon post did, and when to post the next oneself.__wrap_n!=1&&self.__wrap_b("«Rr56h5»",1)

Run your Mastodon account from your AI agent. Claude, ChatGPT or any MCP client reads your posts, finds what works and plans the next thread.self.__wrap_n!=1&&self.__wrap_b("«R15eh5»",1)

One request.self.__wrap_n!=1&&self.__wrap_b("«R34pih5»",1)Any Mastodon server.self.__wrap_n!=1&&self.__wrap_b("«R54pih5»",1)

Real-time webhooks

Every format in one call

From your terminal

Your customers' Mastodon accounts, inside your productself.__wrap_n!=1&&self.__wrap_b("«R4pmh5»",1)

Let your agent draft, and sign off before anything goes liveself.__wrap_n!=1&&self.__wrap_b("«Rr5qh5»",1)

Trusted by Agencies, Solo Founders, Developers & Small Businessesself.__wrap_n!=1&&self.__wrap_b("«R25uh5»",1)

Learn more. Guides, help and docs for Mastodon.self.__wrap_n!=1&&self.__wrap_b("«R162h5»",1)

Frequently Asked Questionsself.__wrap_n!=1&&self.__wrap_b("«R2u6h5»",1)

Can you schedule Mastodon posts?

Which Mastodon servers work with OmniSocials?

What can I post to Mastodon?

Can I add image descriptions?

How do polls work on Mastodon?

How do Mastodon threads work?

Does OmniSocials publish to Mastodon automatically?

Which Mastodon analytics do I get?

Can I answer Mastodon replies in OmniSocials?

Can ChatGPT or Claude post to Mastodon for me?

How much does OmniSocials cost?

Every Mastodon format, from one composer. Posts, polls, images, video and threads, within the limits of your own server.

See how every Mastodon post did, and when to post the next one

Run your Mastodon account from your AI agent. Claude, ChatGPT or any MCP client reads your posts, finds what works and plans the next thread.

One request.Any Mastodon server.

Your customers' Mastodon accounts, inside your product

Let your agent draft, and sign off before anything goes live

Trusted by Agencies, Solo Founders, Developers & Small Businesses

Learn more. Guides, help and docs for Mastodon.

Frequently
Asked Questions