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Slack App Update

Bring your custom Slack app to the latest Eluu manifest — new permissions, one paste, about two minutes.

New Eluu capabilities are ready for your Slack app 🎉

Eluu agents can now work with Slack canvases, custom emoji, channel management, group DMs, scheduled messages and full-text search, and your threads get Slack's agent experience: Slack's Stop button, the "is working" status and thread names that stay in sync with Eluu. A colleague's app also answers direct messages. Your custom Slack app needs a few new settings to unlock them, and Slack only lets an app's own collaborators change that. The fix is a single copy-paste round trip through Slack's App Manifest page and takes about two minutes per app.

✏️ What you'll do

  • Copy your app's manifest out of Slack (JSON tab)
  • Pick your Eluu and paste it here: new permissions, Slack's agent experience and direct messages are added, and its URLs point at your Eluu
  • Paste the result back into Slack

🔒 What stays the same

  • All tokens & installed workspaces
  • Client ID · Client Secret · Signing Secret
  • Your bot user & commands
🛡️The manifest contains no secrets, and everything you paste stays in your browser. This page does the update locally and sends nothing anywhere.
✨Slack's agent experience takes the place of your app's assistant view, with the Slack events it needs. Slack does not let an app turn its agent experience off again.
🧭Every Eluu URL follows the Eluu you pick in step 2 (TestMu unless you choose another). If you have more than one custom app, run the wizard once for each. Team-level and agent-level apps both count.
⏱ ~2 min per app🧩 3 steps💾 nothing uploaded
Step 1 of 3⏱ ~30 sec

Copy your app's manifest out of Slack

The manifest is a single text document that holds all of your app's settings, including every URL that needs to change.

  1. Open api.slack.com/apps ↗  (sign in as the account that created the app) and click your custom Eluu app
  2. Left sidebar → App Manifest (under Features)
  3. Make sure the JSON tab is selected (not YAML), then click Copy to Clipboard at the top right of the editor
What you should see in Slack
JSON YAML
View Example Copy to Clipboard ← click this Download
I don't see the app in my list

Only the app's collaborators can see it. Whoever created it can add you: app settings → Collaborators → add your email. Or forward them this wizard.

Step 2 of 3⏱ ~30 sec

Paste it here

Pick the Eluu your app works with, then paste the manifest below. The moment you paste, the wizard adds the new Eluu permissions, Slack's agent experience and direct messages, and points every Eluu URL at the Eluu you picked. Your tokens and permissions are kept.

1 · Your current manifeststays in your browser
2 · Your updated manifest
Step 3 of 3⏱ ~1 min
Slack re-verifies on save · the new domain must be live

Paste it back into Slack & verify

  1. Back on Slack's App Manifest page, click in the editor, select all (⌘A / Ctrl A) and paste over it
  2. Click Save Changes at the top right of the page
  3. Slack re-checks the event URL. If it shows a prompt to verify, click it and Verified ✓ appears within a few seconds
What you should see in Slack
https://testmu-api.eluu.ai/api/slack/eventsVerified ✓
🔑After saving, Slack may show a banner asking you to reinstall the app for the new permissions. Don't use Slack's banner. Instead, in Eluu open Slack → your bot's row → Manage → Reinstall (top-right of the drawer). Going through Eluu is what records the new grant and switches the new tools on automatically for your agents.
⚠️Save rejected, or the URL won't verify? The usual cause is an incomplete paste — go back to step 1 and copy the whole editor again (select-all first). Trying again breaks nothing.

Then confirm everything works. Tap each check as it passes.

🛟Something failing? Keep your changes in place and contact Eluu support with the app name and which check failed. We can see Slack's delivery attempts from our side, which makes these quick to pin down.
🎉

This app is up to date!

Your custom Slack app is now on manifest v2026-10.2: canvases, emoji, channel management, group DMs, scheduled messages and full-text search are ready for your agents, and your threads have Slack's agent experience. People can now DM a colleague's app to start a chat. Your tokens and installed workspaces were never touched.

One last thing: in Eluu, open Slack → your bot's row → Manage → Reinstall (top-right of the drawer) — not Slack's own banner — so Eluu records the new grant and switches the new tools on.

Run the wizard once per custom app. Team-level and agent-level apps both count. Once every app is done, you're finished.