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Slack link previews
A Freero board link pasted in Slack unfolds into its title and thumbnail, when the board is public.
Set up by the server’s operator
What it does
The server’s operator creates a Slack app from Freero’s manifest and sets two secrets. After that, a Freero board link pasted in a Slack workspace that installed the app shows a preview.
Only a board anyone with its link may open (no password, not expired) shows its title, description and thumbnail. Every other link, and a link to a board that doesn’t exist, gets the same generic “Sign in to Freero to view it” card, so a preview never reveals a private board.
Connect Slack link previews
Step 1
Run npm run admin -- slack:manifest on the server and create a Slack app from the manifest it prints.
Step 2
Install the app to your Slack workspace, then set SLACK_SIGNING_SECRET and SLACK_BOT_TOKEN on the server and restart it.
Off by default: needs SLACK_SIGNING_SECRET and SLACK_BOT_TOKEN on the server.
In Freero, Apps & agents → Slack link previews takes you straight to this step.
More chat
Slack
Board activity posted to a Slack channel through an incoming webhook.
Microsoft Teams
Board activity posted to a Teams channel as an Adaptive Card with an Open board button.
Discord
Board activity posted to a Discord channel as an embed with a link to the item.
Google Chat
Board activity posted to a Google Chat space as a text message with a link.
Mattermost
Board activity posted to a Mattermost channel, with @channel-style pings neutralised.
Bring your team and your agents to one board
Free to use, open source, and yours to host. No credit card, no seat count.