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The 3RD Slack app brings your 3RD data into Slack. Mention @3RD in a channel, or send it a direct message, and it answers from the same data you see in 3RD:
“@3RD how did our visibility in ChatGPT develop this month compared to our top competitor?”
It uses the same tools as the 3RD MCP connector, and it follows the same rules: every person sees only the brands they can see in 3RD, and nothing changes without their confirmation.

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Before you start

  • Your organization needs an active 3RD subscription.
  • To add the app, you need to be an owner or admin of the organization in 3RD.
  • Your Slack workspace may require a Slack admin to approve new apps. If it does, Slack asks them when you install.

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Add 3RD to Slack

Add to Slack

Sign in to 3RD and approve the app in Slack. You need to be an owner or admin of an organization with an active subscription.
You can also start from inside 3RD:
1

Open your organization settings

In 3RD, open the account menu, choose Organisation, then Details.
2

Click Add to Slack

In the Slack section, click Add to Slack. Slack opens and shows what 3RD asks permission to do.
3

Pick your workspace and allow

Choose the Slack workspace and click Allow. You’re sent back to 3RD, and the 3RD bot sends you a welcome message in Slack.
A Slack workspace connects to one 3RD organization. If you’re an agency, install it in each client’s workspace from that client’s organization.

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Connect your 3RD account

Each person connects their own 3RD account once. Nobody can ask on someone else’s behalf.
1

Mention @3RD

The first time you mention @3RD (or message it directly), you get a Connect 3RD account button that only you can see.
2

Sign in to 3RD

The button opens 3RD. Sign in if you aren’t already, then click Continue with Slack.
3

Confirm it's you in Slack

Slack asks you to confirm your identity. When you’re sent back, your accounts are connected, and 3RD confirms in a direct message.
You can also start this at any time with /3rd connect.

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Ask questions

  • In a channel: invite 3RD once with /invite @3RD, then mention @3RD. It answers in a thread under your question, and you can keep asking in that thread.
  • In a direct message: just write to 3RD. No mention needed.
3RD answers in the language you write in. Ask about anything you’d look up in 3RD — visibility and trends, competitors and leaderboard, which sources AI assistants cite, sentiment, your prompts, and what to do next from your playbook.
In a channel, everyone in it can read 3RD’s answer. Ask in a direct message when the numbers shouldn’t be shared with the whole channel.

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Set a channel’s brand

If you track more than one brand, tell 3RD which brand a channel is about, so you don’t have to name it in every question:
You can use a brand’s name or its domain. /3rd brand on its own shows the channel’s current brand. You can still ask about any of your other brands by naming them.

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Make changes from Slack

3RD can also make changes for you — for example add prompts, add a competitor or update a task. It never does so on its own: it shows a Confirm button first, and only the person who asked can press it. Press Cancel to drop the change. A change that hasn’t been confirmed expires after 24 hours.

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Who sees what

  • 3RD answers as the person who asks, with exactly their access in 3RD: their role, their brands and their plan.
  • In a workspace, 3RD only ever uses brands from the organization the workspace is connected to — even if you also have access to other organizations in 3RD.
  • If someone loses access in 3RD, they lose it in Slack from their next message.

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Commands

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Remove 3RD from Slack

An owner or admin can go to Organisation → Details → Slack in 3RD and click Disconnect. 3RD stops answering in the workspace straight away. You can also remove the app from Slack’s own app settings.

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Troubleshooting

The organization the workspace is connected to has no active 3RD subscription. Ask an owner or admin to check Organisation → Billing in 3RD.
Only owners and admins can see it. Ask an owner or admin of your organization to add the app.
A workspace can only be connected to one 3RD organization. Disconnect it from the other organization first, then add it again.
You’re signed in to a 3RD account without access to brands in the organization this workspace is connected to. Ask an admin to give you access, or run /3rd connect and sign in with the right account.
3RD only reads channels it has been added to. Invite it with /invite @3RD, then mention @3RD in your message.

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Get help

Something not working, or a question about the Slack app? Email gethelp@get3rd.com and include your Slack workspace name.
  • MCP — the same data in Claude and other AI assistants
  • API keys & MCP — programmatic access to your data