Mantle
Mantle Slack Agent

Your AI team communicator

Connect Slack and let AI agents reply in threads, post channel updates, triage DMs, and keep your workspace informed — all on autopilot.

Connect your Slack See all integrations

Free plan available · No credit card · OAuth connect

What the Slack Agent does

Keep your team in sync without the manual work.

Replies in threads

The agent reads thread context and drafts a reply. You review before it posts.

Posts channel updates

Summaries, reports, and alerts go to the right channel at the right time.

Triages your DMs

AI reads incoming DMs, flags urgent ones, and drafts quick responses for you.

Searches conversations

Find any message, file, or decision across your entire Slack workspace instantly.

Manages channels

Create, archive, rename channels. Set topics and purposes. Invite members automatically.

Uses your own context

Ground replies with your docs from Notion, Drive, or knowledge base.

Three steps, two minutes

Connect. Configure. Let the agent work across your Slack workspace.

Step 1

Connect Slack

One-click OAuth. Select the channels and permissions you want to grant.

Step 2

Configure your agent

Choose which channels to monitor, what triggers to respond to, and your preferred tone.

Step 3

Watch it work

The agent posts updates, replies in threads, and keeps your team informed automatically.

Powerful workflows, out of the box

Triggered by new messages, schedules, or events from other tools.

Auto-reply in support channelsNew message

Customer posts in #support. The agent reads the message, checks your docs, and replies in the thread.

New message in #supportFetch thread contextQuery knowledge baseReply in thread
Daily standup summarySchedule

Every morning, the agent compiles yesterday's activity into a clean standup post.

Cron: weekdays 9amFetch channel activitySummarize highlightsPost to #standup
Alert on Linear status changeTrigger

When a Linear issue moves to Done, the agent posts a celebratory update in the team channel.

Linear: status changedFetch issue detailsFormat messagePost to channel
Summarize any channelButton

One click and the agent reads the last 50 messages and posts a TL;DR summary.

Select channelFetch recent messagesGenerate summaryPost summary

Every Slack action, available as a tool

The agent can message, search, organize, and manage — through the official Slack API.

29tools
4categories
1API

Messages

8 tools

Send, edit, delete, and schedule messages across channels and DMs.

Send message
Send ephemeral message
Update message
Delete message
Schedule message
Fetch conversation history
Fetch thread replies
Search messages

Channels

8 tools

Create, manage, and organize channels across your workspace.

Create channel
Archive channel
Rename channel
Set topic
Set purpose
Invite to channel
List channels
Join conversation

Files & reactions

7 tools

Upload files, manage reactions, pins, and reminders.

Upload file
Add reaction
Remove reaction
Pin item
Unpin item
Create reminder
List reminders

Users & workspace

6 tools

Look up users, manage profiles, and configure workspace settings.

Find users
Get user info
Set user presence
Fetch team info
List user groups
Open DM

Your workspace, your rules

Full control over what the agent can see and do in Slack.

Channel-level permissions

Choose exactly which channels the agent can read and post in. Everything else stays private.

Review before posting

Configure the agent to draft messages for your approval before posting to any channel.

Pause in one click

Toggle the agent off from the dashboard. All Slack activity stops immediately.

Revoke anytime

Disconnect Slack to revoke OAuth access. No residual permissions or stored tokens.

Questions, answered

Only in channels you explicitly grant access to. Private channels and DMs are excluded unless you opt in.

By default, the agent drafts messages for review. You can enable auto-posting for specific channels and workflows.

Standard bot scopes: channels:read, chat:write, users:read, and files:read. You choose which channels during OAuth.

Yes. The agent works with any Slack plan including Enterprise Grid with org-level permissions.

Start for free — no credit card needed. The Free plan includes a usage allowance that refills every 5 hours. Paid plans unlock more usage and team features.

Slack is just the start

Connect the other tools your team already uses — same read, draft, automate pattern.

Gmail

Draft replies and triage your inbox

Explore →
Linear

Turn messages into issues automatically

Explore →
Notion

Ground replies in your docs and wiki

Explore →
GitHub

Post PR updates in team channels

Explore →
Google Calendar

Share schedule updates in channels

Explore →
Jira

Post sprint updates to team channels

Explore →
Stripe

Alert on payments and subscriptions

Explore →
Discord

Bridge messages across platforms

Explore →
See all integrations

Your Slack, supercharged.

Connect Slack and let AI handle the repetitive messaging. Start on the Free plan.

Connect your Slack

No credit card required · OAuth connect · Revoke anytime