Slack
Chat & messagingAPI keyConnection test available
Post messages to Slack channels with a bot token.
OCNORA ships 46 typed Slack operations and 1 trigger. Each node has a schema-driven form, input and output tables beside its settings, and is pre-flighted by Workflow Health before your first real run. Endpoints not covered by a typed node are called at https://slack.com/api through the HTTP node with the same credential.
Before you connect Slack
- Authentication
- API key
- Credential
- {"token": "xoxb-…", "signing_secret": "…"}the Slack bot token (xoxb-…), or {"token": "xoxb-…"}the Slack bot token (xoxb-…)
- Connection test
- Available: the stored credential can be checked against the provider when you add it. This is not a record that a test was run or passed.
- Prerequisites
- signing_secret is what verifies inbound deliveries; the bot token is only used by the Slack action nodes.
Prerequisites are taken from the connection notes in this provider’s node contracts; each node’s reference page says which apply to it.
What you can do with Slack
Operations, grouped by what they do to your data, plus 1 trigger that start a run.
Create and send 9
Read and search 16
Update 7
Delete and cancel 6
Other operations 8
A sample Slack workflow
- 1Eventtrigger.slack_eventStart a run when Slack posts an Events API event to this workflow.
- 2Get Channel Historyslack.get_channel_historyRead recent messages from a Slack channel via a bot token.
- 3Pin Messageslack.add_pinPin a message to its channel so it shows in the channel's pinned items.
An outline built from this provider’s node contracts, not a recorded run. Each step’s output fields are available to the next in the field picker.
Every node below has a reference page: what it does, the connection it needs, its config fields with types, constraints and examples, and the shapes it emits.
Triggers 1
Operations 46
- Pin MessagePin a message to its channel so it shows in the channel's pinned items.slack.add_pin
- Add ReactionAdd an emoji reaction to a message.slack.add_reaction
- Archive ChannelArchive a channel so nobody can post in it, keeping its history.slack.archive_channel
- Create ChannelCreate a public or private channel and return its id.slack.create_channel
- Create User GroupCreate an @-mentionable user group and return its id.slack.create_usergroup
- Delete FileDelete a file from Slack, removing every share of it.slack.delete_file
- Delete MessageDelete a message the bot posted, or any message if the token may.slack.delete_message
- Delete Scheduled MessageCancel a queued message before it posts.slack.delete_scheduled_message
- Disable User GroupDisable a user group — Slack's nearest equivalent to deleting one.slack.disable_usergroup
- Enable User GroupBring a disabled user group back so it can be @-mentioned again.slack.enable_usergroup
- Get Channel HistoryRead recent messages from a Slack channel via a bot token.slack.get_channel_history
- Get File InfoRead one file's metadata and a page of the comments on it.slack.get_file_info
- Get Message PermalinkGet the shareable URL of one message, to paste into an email or ticket.slack.get_permalink
- Get ReactionsRead every emoji reaction on one message or file, with who added each.slack.get_reactions
- Get Thread RepliesRead a whole thread: its parent message and every reply, oldest first.slack.get_thread_replies
- Get UserRead one user's profile by their Slack user id.slack.get_user
- Get User PresenceRead whether a user is currently active in Slack or away.slack.get_user_presence
- Invite Users to ChannelAdd one or more users to a channel by user id.slack.invite_to_channel
- Join ChannelAdd the bot itself to a public channel so it can post and read there.slack.join_channel
- Leave ChannelRemove the bot itself from a channel it is a member of.slack.leave_channel
- List Channel MembersPage through the user ids of everyone in a channel.slack.list_channel_members
- List ChannelsList channels in the workspace via a Slack bot token.slack.list_channels
- List FilesPage through the files in the workspace, filtered by channel, user or date.slack.list_files
- List Pinned ItemsList everything pinned in a channel — messages and files alike.slack.list_pins
- List Scheduled MessagesList the messages this app has queued but not yet posted.slack.list_scheduled_messages
- List User ConversationsPage through the channels and DMs a user belongs to.slack.list_user_conversations
- List User Group MembersList the user ids that belong to one user group.slack.list_usergroup_users
- List User GroupsList the workspace's @-mentionable user groups.slack.list_usergroups
- List UsersPage through every member of the workspace, bots and deactivated included.slack.list_users
- Look Up User by EmailFind the Slack user id behind an email address, to DM or mention them.slack.lookup_user_by_email
- Open Direct MessageOpen or resume a DM or group DM and return the channel id to post to.slack.open_dm
- Open ModalOpen a Block Kit modal in front of the user who triggered the interaction.slack.open_view
- Post Ephemeral MessagePost a message only one named user can see, which disappears on reload.slack.post_ephemeral
- Post MessageSend a message to a Slack channel or user via a bot token.slack.post_message
- Publish Home TabReplace one user's App Home tab with a Block Kit view.slack.publish_home_view
- Remove User from ChannelRemove one user from a channel (Slack calls this conversations.kick).slack.remove_from_channel
- Unpin MessageRemove a message from its channel's pinned items.slack.remove_pin
- Remove ReactionRemove an emoji reaction this bot added to a message.slack.remove_reaction
- Schedule MessageQueue a message to post at a future Unix timestamp, up to 120 days ahead.slack.schedule_message
- Set Channel PurposeReplace the channel description shown in its About tab.slack.set_channel_purpose
- Set Channel TopicReplace the one-line topic shown in the channel header.slack.set_channel_topic
- Unarchive ChannelBring an archived channel back so people can post in it again.slack.unarchive_channel
- Update MessageRewrite the text or blocks of a message that has already been posted.slack.update_message
- Update User GroupChange a user group's name, handle, description or default channels.slack.update_usergroup
- Update User Group MembersReplace a user group's membership with the exact list of ids given.slack.update_usergroup_users
- Upload FileUpload a file with Slack's current external-upload flow and share it into a channel.slack.upload_file
Templates that use Slack
- Form submission to Airtable with a Slack pingAn intake form writes the submission to Airtable and tells the channel it landed.
- Failed payment to a HubSpot ticket and a Slack alertA Stripe payment failure opens a HubSpot ticket against the customer and pings the billing channel.
- Weekly Notion database digest to SlackQuery a Notion database on a schedule and post what it holds into a Slack channel.
- New Salesforce lead to SlackPoll Salesforce for new leads and post each one into the sales channel as it arrives.
- New spreadsheet row to a HubSpot contactA new row in a Google Sheet becomes a HubSpot contact, and the team hears about it in Slack.
- Internal request form to a Slack channelA public request form posts every submission into a Slack channel, formatted and ready to pick up.
- Daily Jira bug digest to SlackEvery morning, search Jira for open bugs and post the count and the list to a Slack channel.
- Incident webhook to Slack and Microsoft TeamsOne webhook from your monitoring tool announces the incident in both Slack and a Teams channel.
- Stripe payment failure alertA failed Stripe payment reaches the billing channel and the billing inbox with the customer already looked up.
Slack questions
- How does OCNORA authenticate with Slack?
- With a stored API key credential, shaped {"token": "xoxb-…", "signing_secret": "…"} or the Slack bot token (xoxb-…), or {"token": "xoxb-…"} or the Slack bot token (xoxb-…). A connection test can check it when you add it.
- What can I automate with Slack?
- 46 typed operations and 1 trigger, each with a reference page listing its config fields and the shapes it emits.
- What if the Slack operation I need is not listed?
- Call https://slack.com/api from the HTTP node with the same credential, or describe the step to the AI builder, which asks our team for a typed node when one is missing.
- Are there templates that use Slack?
- Yes: 9 templates, listed above.
- How are Slack calls controlled?
- Every call and every run step is audited, runs count against the execution budget, and Workflow Health pre-flights the workflow when you save it.
More in Chat & messaging
See your first Slack workflow run.
Book a technical demo. We add the connection, pick a template or describe the workflow to Build with AI, and Workflow Health checks it before it runs.