![Independent communities connected to a shared publishing calendar](/editorial/schedule-mastodon-cover.webp)Guides

# Connect Mastodon and schedule posts

Choose a Mastodon instance, authorize it, and schedule posts, media, threads, and polls while respecting instance-specific policy and limits.

Last updated August 15, 2026 · 4 min read · The Naasher team · [Editorial and corrections policy (Arabic)](/editorial-policy) · [اقرأ بالعربية](/guides/mastodon)

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**In short:** Mastodon is a federation of independently operated servers. Connection starts with your instance URL, not an assumption that every account lives on mastodon.social.

Choose the URL where you use the account and review its content and media policies. From Accounts, select Mastodon, enter the instance, and approve OAuth on that server. Naasher requests account read, status write, media upload, and notification-read access.

## What can be scheduled?

The composer currently validates 500 characters, up to four images or one video, alt text, threads, and polls. Do not mix image and video media in one post. Select visibility deliberately and use content warnings when appropriate.

Mastodon documents publishing at [POST /api/v1/statuses](https://docs.joinmastodon.org/methods/statuses/), including polls, visibility, content warnings, and native `scheduled_at`. Naasher publishes through its worker and uses stable identifiers to prevent duplicate retries.

## Instance differences matter

An instance can restrict app registration, change upload limits, or require account approval. If connection fails on a private server, inspect its version and OAuth policy rather than repeatedly changing the account password.

Federated communities value context and accessibility. Write a complete introduction, add useful alt text, and be present for replies after the scheduled post goes out.

Compare this OAuth flow with the app-password workflow in the [Bluesky guide](/en/guides/bluesky).

## Test the workflow with your real accounts

Start free, then compare the composer, calendar, and channel limits with what your team actually needs before choosing a plan.

[Start free](https://app.naasher.com/sign-up)[Review pricing in Arabic](/pricing)

## Frequently asked questions

Does Naasher work only with mastodon.social?

No. Enter the instance that hosts your account. Naasher registers and authorizes against that server.

Is the post limit always 500 characters?

Five hundred is the common default and the limit currently enforced by the composer. Some instances customize it, so check your server policy.

Does Naasher send image alt text?

Yes. Add a description to each image and Naasher sends it during media upload.

## Read next

[![Lightweight post cards flowing through a calendar into a publishing queue](/editorial/schedule-bluesky-cover.webp)GuidesBlueskyAT ProtocolConnect Bluesky and schedule posts safelyCreate a Bluesky app password, connect securely, and schedule text, images, and threads with current 300-character and four-image limits.August 15, 2026·4 min read](/en/guides/bluesky)

[![A connected sequence of short posts arranged on a publishing calendar](/editorial/schedule-x-cover.webp)GuidesXthreadsHow to schedule posts and threads on X in 2026Schedule X posts, understand how successful thread runs are chained, and verify partial or uncertain outcomes before retrying.August 28, 2026·3 min read](/en/guides/x)

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Canonical URL: https://naasher.com/en/guides/mastodon