Substitoot — improved Mastodon federation

Name: Substitoot — improved Mastodon federation
Rating: 5 (4 reviews)
Author: Kludge Guru

Loads missing replies to boosted toots directly from the source server.

As of May 2026, Substitoot — improved Mastodon federation has 177 users and a 5.00/5 rating from 4 reviews in the Social & Communication category.

Kludge Guru Social & Communication

Chrome Web Store ↗.crx

Users−1.1%

177

Rating0%

5.00

4 reviews

Reviews0%

Version

0.7.2.0

Manifest V3

History

2 snapshots

Tracking since Apr 24, 2026.

View as table

Date	Users	Rating	Reviews	Version
Apr 24, 2026	179	5.00	4	0.7.2.0
May 21, 2026	176	5.00	4	0.7.2.0
Now	177	5.00	4	0.7.2.0

Permissions & access

Permissions: storagescripting
Host access: None declared

Screenshots

Substitoot — improved Mastodon federation screenshot 1

About

Mastodon often fails to show up-to-date context and information on posts from remote instances. This addon does that properly.

• See all the replies to any post on your home instance. Local and remote replies are now loaded in parallel so there is no extra delay.
• Interact with all the remote posts as normal. They will be fetched to your instance as needed.
• See the actual latest 20 posts in any user's profile.
• See up-to-date boost/favorite counts on posts.

It should work reliably on mainline Mastodon versions 4.0 and up, your mileage may vary for older instances or forks.

Make sure to open the addon settings and type in the instances it should be active on!

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It can fetch statuses and contexts from Akkoma/Pleroma and most Misskey/FireFish/Sharkey/IceShrimp/etc instances, better compatibility is a work in progress.

However, it can only run on Mastodon as a home server, and has been tested to work on vanilla and Glitch editions on current development version (4.3.0).

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Visit the website for more info!