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Post a message in Discord when a message is posted in a channel in Slack

When a message is posted in a channel in Slack, post a message in Discord.

Start the 14-day trial, then find it under Templates → Library. It installs into the client you choose, switched off, with its checklist.

Steps
1
Client fills in
1
Accounts
2
Starts
A message is posted in a channel in Slack, within 5 minutes

UsesBeta

Every step, in order

When it happens in the first app, the step runs in the second, with the client’s own account.

A message is posted in a channel
A new message in a channel, checked every 5 minutes; joins and the bot’s own posts are skipped. The app needs channels:history (groups:history for a private channel) and must be in the channel.
Post a message
Post to the channel the webhook belongs to.
  1. Starts whenA message is posted in a channel
  2. App stepPost a message

What each client fills in

Slack: Channel ID
The channel’s details → About: the ID at the bottom.

The accounts it needs

Each is the client’s own, stored encrypted and never copied between clients. Until one is added the client’s checklist shows it, and nothing runs.

  • In the client’s Slack: api.slack.com/apps → Create New App → OAuth & Permissions → add the chat:write scope (and channels:history, plus groups:history for a private channel, for the message trigger) → Install to Workspace → copy the Bot User OAuth Token. Invite the app to the channel.

  • In the client’s Discord server: Server Settings → Integrations → Webhooks → New Webhook → pick the channel → Copy Webhook URL.

After you install it

It lands switched off. The client’s checklist holds exactly this:

  1. Connect the client’s Slack, for “A message is posted in a channel”
  2. Connect the client’s Discord, for “Post a message”
  3. Fill in Slack: Channel ID (The channel’s details → About: the ID at the bottom)

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