masto2slack

masto2slack reads posts (toots?) from your Mastodon account and feeds them to a Slack channel.

Installation

Download the binary from releases, put it somewhere you can run it under a cron job.

Setup

You'll need to:

• On your Mastodon server, create a 'new application' and get an access token (access_token) (you can do this under https://<your_instance>/settings/applications/new in the web interface). You'll need read access.
• Create a Slack App and enable an incoming webhook (you'll get the webhook_url)
• Create a configuration file, ~/.config/masto2slack/config.yml, as below.

Example ~/.config/masto2slack/config.yml:

slack: 
  webhook_url: https://hooks.slack.com/services/TSDFICIU/B0USDFIK9/cs8dyhl3nkj3knfnwnlkfc
mastodon:
  server: https://tootymctootface.social
  access_token: 2903458u2305_34534o8543_34kj5h34k5hk35k3

Running

Either create a cronjob (crontab -e) to call masto2slack every 5 mins (or longer):

*/5 * * * * /usr/local/bin/masto2slack >/dev/null 2>&1

(this assumes you've copied masto2slack to /usr/local/bin/masto2slack)

Alternatively, run:

watch -n 300 ./masto2slack

to check for new posts every 5 mins (300 seconds).

Building from source

You'll need Go (v1.19+).

git clone https://github.com/pansapiens/masto2slack.git
cd masto2slack

# Test without building
# (often slow the first time since dependencies will be downloaded)
go run masto2slack.go

# Build and run
go build masto2slack.go
./masto2slack

Ideas / TODO

• Option to run in our own polling loop rather than require a cronjob
• Use websockets so we don't need to poll
• Better logging and a --verbose commandline option
• Better Slack post formatting (eg media posts in Slack message 'blocks' ?)
  • Option to just post the URL to the toot and unfurl in Slack (seems this requires a proper chat bot not just a webhook) ?