Twitter to Mastodon timeline forwarding tool
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t2m - Twitter 2 Mastodon

A script to manage the forwarding of tweets from Twitter accounts to a Mastodon one.

Build Status


Using pip:

pip install t2m

Alternatively from source, on debian/ubuntu:

sudo apt-get install python-virtualenv

virtualenv ve
source ve/bin/activate

# if you run with an old version of python 2.7 (Ubuntu 14.04 for example)
# you'll need to run those, otherwise requests will break because it won't
# be able to correctly verify the host of the https issuer
# if you use python 3 you can ignore that
pip install pyopenssl ndg-httpsclient pyasn1

python develop

Then you need twitter API credentials. Following this tutorial then create a conf.yaml file of this format:

consumer_key: "..."
consumer_secret: "..."
access_token_key: "..."
access_token_secret: "..."

The credentials for Mastodon are automatically generated at the first startup.

Python 2/3 and one known bug

Compatible with both.

There is a known bug if you run python2 coming for the STL lib mimetypes: JPEG images will be uploaded with the .jpe extension, this will break "going on the exact url of the image" (will cause a download instead of a display).

This bug is fixed in python 3 so I would recommend running t2m with it.


One account

Forward for one account:

t2m one twitter_account -m mastodon_account

This will forward all not already forwarded tweet (this can be up to 200) while waiting 30 seconds between each toot. This will also remember the mastodon account (so you don't need to specify it again).

Tweets that starts with a "@" won't be forwarded. Retweets won't be forwarded unless the -r option is specified.

You might want a finer control on your action, so you can do:

t2m one twitter_account -m mastodon_account -n 10

To forward only 10 tweet (be careful: if you relaunch the command this will forward 10 other tweets that weren't already forwarded).

You can also mark the whole available tweet as "already seen" without forwarding them so they'll never be forwarded in the future by using this command:

t2m one twitter_account -m mastodon_account -o

If you want to test your commands without forwarding you can simply uses the -d (or --debug) option:

t2m one twitter_account -m mastodon_account -d
t2m one twitter_account -m mastodon_account -n 10 -d


In general, when I had a new account I look at its timeline, read how many tweets make sens then do:

t2m one twitter_account -m mastodon_account -n <number of tweets>
t2m one twitter_account -m mastodon_account -o

Several accounts

To forward tweets for all accounts, simply run:

t2m all

This is a good command to put inside a crontab.

To check all accounts that will be forwarded, do a:

t2m list

You can also add an account directly without using the one command using:

t2m add twitter_account mastodon_account


When enabled, retweets are forwarded using the retweet.tmpl file as a template, feel free to edit it to suit your needs. The following tokens will be replaced in the template:

  • %(text)s: the retweeted text
  • %(user)s: the original tweet author username
  • %(id)s: the original tweet id

To create a link to the original tweet, use To link to the original author profile, use

Content Warnings

Content warnings can be added automatically to toots based on regular expressions. These are configured by creating a file named cw.json.

For example, simple patterns can be used to match any tweet mentioning specific keywords:

    "coding": [
        "code", "coding", "pull request", "github", "git", "json", "regex"
    "coffee": [
        "#coffee", "coffee", "caffeine"

If a regex pattern contains a group then that group will be used as the content warning text. This allows rules such as using the first hashtag of a tweet as the CW warning:

    "hashtag-prefix": [

This also allows using a prefix such as CW to specify that the first line of a tweet should be used as the content warning:

    "cw-prefix": [
        "^CW (.*)\\n"

Note that the regex is matched after the retweet.tmpl file is applied as a template, so this can be used to automatically apply a content warning to all RTs, or RTs from specific people, etc.


Copyright (C) 2017-2018  Laurent Peuch and [Contributors](

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <>.