← Change Slack app choice

Selected path Existing Slack app

Set up Email Reminder with an existing Slack app.

Complete the Slack app, agent settings, access rules, integrations, and final checks below.

01
SLACK API // YOUR APPS

Select the existing app.

Open Slack apps ↗
  1. 01.1

    Open Slack API → Your Apps.

    Sign in at api.slack.com/apps ↗.

  2. 01.2

    Select the app and workspace.

    Open the app that should run Email Reminder. Confirm the workspace before changing its manifest.

02
SLACK APP // APP MANIFEST

Apply the recipe manifest.

The name and description are already set for Email Reminder.

  1. 02.1

    Open Features → App Manifest.

    Choose App Manifest and select the JSON tab.

  2. 02.2

    Back up the current manifest.

    Copy the existing JSON to a secure working document before changing it so workspace-specific settings can be preserved or restored.

  3. 02.3

    Replace or merge the configuration.

    Copy the manifest below. Merge it when the existing app has settings your team still needs.

  4. 02.4

    Save the manifest.

    Review Slack's change summary, then click Save Changes.

JSON MANIFEST
{
  "display_information": {
    "name": "AgentBarn_Email_Reminder",
    "description": "Monitors a mailbox, flags action-required messages, and posts priority pings to Slack.",
    "background_color": "#CC4400"
  },
  "features": {
    "app_home": {
      "home_tab_enabled": false,
      "messages_tab_enabled": true,
      "messages_tab_read_only_enabled": false
    },
    "bot_user": {
      "display_name": "AgentBarn_Email_Reminder",
      "always_online": true
    }
  },
  "oauth_config": {
    "scopes": {
      "bot": [
        "app_mentions:read",
        "canvases:read",
        "canvases:write",
        "channels:history",
        "channels:join",
        "channels:read",
        "chat:write",
        "chat:write.customize",
        "chat:write.public",
        "emoji:read",
        "files:read",
        "files:write",
        "groups:history",
        "groups:read",
        "im:history",
        "im:read",
        "im:write",
        "mpim:history",
        "mpim:read",
        "mpim:write",
        "pins:read",
        "pins:write",
        "reactions:read",
        "reactions:write",
        "search:read.users",
        "users:read",
        "users:read.email"
      ]
    },
    "pkce_enabled": false
  },
  "settings": {
    "event_subscriptions": {
      "bot_events": [
        "app_mention",
        "channel_rename",
        "member_joined_channel",
        "member_left_channel",
        "message.channels",
        "message.groups",
        "message.im",
        "message.mpim",
        "pin_added",
        "pin_removed",
        "reaction_added",
        "reaction_removed"
      ]
    },
    "interactivity": {
      "is_enabled": true
    },
    "org_deploy_enabled": false,
    "socket_mode_enabled": true,
    "token_rotation_enabled": false,
    "is_mcp_enabled": false
  }
}
03
SLACK APP // SOCKET MODE

Create the app-level token.

  1. 03.1

    Open Basic Information → App-Level Tokens.

    Click Generate Token and Scopes.

    Slack App-Level Tokens area focused on Generate Token and Scopes
    Generate Token and Scopes.
  2. 03.2

    Name the token and add the scope.

    Use AgentBarn_Email_Reminder, add connections:write, and click Generate.

    Slack app-level token dialog with the connections write scope
    Name → connections:write → Generate.
  3. 03.3

    Copy the xapp- value.

    Keep it ready for the Agent Barn App-level token field.

    Slack app-level token with the value blurred and Copy button visible
    The value is blurred; use Copy.
04
SLACK APP // WORKSPACE INSTALL

Install the app and copy the bot token.

  1. 04.1

    Open Install App.

    Click Install to [your workspace].

    Slack Install App page with Install to workspace
    Install App → Install to workspace.
  2. 04.2

    Review the workspace and permissions.

    Confirm the workspace, review the requested access, and choose Allow.

    Slack app permission review with workspace selection and Allow button
    Confirm workspace → review access → Allow.
  3. 04.3

    Copy the Bot User OAuth Token.

    In Installed App Settings → OAuth Tokens, copy the xoxb- value.

    Slack OAuth Tokens section with the token blurred and Copy button visible
    Bot User OAuth Token → Copy.
05
AGENT BARN // SLACK CREDENTIALS

Connect both Slack values.

APP-LEVEL TOKENxapp-…

Paste the value from App-Level Tokens.

BOT TOKENxoxb-…

Paste the Bot User OAuth Token.

  1. 05.1

    Enter the values in their matching fields.

    Paste the complete xapp- and xoxb- values, then save.

  2. 05.2

    Confirm the connected app.

    Check that Agent Barn resolves the expected Slack app and workspace.

06
AGENT BARN // SETTINGS

Configure the agent.

  1. 06.1

    Name the agent.

    Use AgentBarn_Email, or another role-specific name your team will recognize.

  2. 06.2

    Select and test the model.

    Choose an available model, then run one representative Email Reminder task before connecting broader access.

  3. 06.3

    Choose command approval.

    Command approval options: Auto, Manual, and Off
    Auto · Manual · Off
    Auto

    Runs low-risk commands automatically.

    Manual

    Asks before every command.

    Off

    Runs without approval prompts.

  4. 06.4

    Choose response detail.

    Response detail options: Verbose and Concise
    Verbose · Concise
    Verbose

    Shows progress while working.

    Concise

    Returns the result without step narration.

  5. 06.5

    Configure the recipe trigger and workflow.

    Trigger: A new message meets the configured mailbox and priority rules.

    1. Watch inbox. Check the allowed mailbox for relevant messages.

    2. Assess priority. Identify action-required or P1/P2 messages.

    3. Prepare ping. Create a concise Slack reminder with context.

    4. Follow up. Send the reminder to the configured destination.

  6. 06.6

    Apply the recipe requirements and review rule.

    Template

    Priority rules, reminder tone, and escalation instructions.

    OAuth

    Read-only Gmail access approved through Google sign-in.

    Channels

    Allowed Slack channels or direct-message policies.

07
SLACK // ACCESS

Set Slack access rules.

  1. 07.1

    Choose channel access.

    Channel access options: Allowlist and Open
    Allowlist · Open
    Allowlist

    Respond only in channels you add.

    Open

    Respond in any channel the app can reach.

  2. 07.2

    Choose direct-message access.

    Direct-message options: Off, Allowlist, and Open
    Off · Allowlist · Open
    Off

    Ignore direct messages.

    Allowlist

    Reply only to approved people.

    Open

    Reply to anyone who can reach the app.

  3. 07.3

    Add and test the intended destinations.

    Invite the Slack app to each allowed channel, add the same channels or people in Agent Barn, and send one test request.

08
AGENT BARN // INTEGRATIONS

Connect the skills for Email Reminder.

REQUIRED

Gmail

Read messages that match the configured mailbox and priority rules.

Credential
Google OAuth sign-in with gmail.readonly; no manual key is needed.
Permissions
Gmail OAuth: gmail.readonly · Modify, send, delete, contacts, and calendar: not requested
  1. Select Authenticate with Google and approve read-only Gmail access.
  2. Use a custom Google OAuth client only when the workspace requires its own application.
  3. Test with representative P1/P2 messages before enabling continuous monitoring.
  1. 08.1

    Select only this recipe’s integrations.

    Keep required skills. Where a card says “choose one,” connect the provider that owns the relevant data.

  2. 08.M1

    Gmail // Authenticate with Google.

    Click Authenticate with Google, choose the mailbox, review the consent screen, and approve gmail.readonly.

    Gmail OAuth card with Authenticate with Google
    Google OAuth · gmail.readonly
  3. 08.M2

    Gmail // Keep access read-only and set filters.

    Do not grant send, modify, or delete access. Configure the folders, labels, senders, recipients, and priority rules this recipe may monitor; use a custom Google OAuth client only when the workspace requires one.

  4. 08.M3

    Gmail // Validate both sides of the filter.

    Confirm one qualifying message creates a reminder and one excluded message does not appear in the agent's results.

  5. 08.Z

    Test every selected integration.

    Run one expected action for each skill and confirm resources outside the selected boundary remain unavailable.

09
FINAL CHECK

Verify the complete recipe.

  • The existing Slack app connects with both Slack values.
  • The app responds in an allowed channel.
  • A destination outside the selected access rule receives no response.
  • Each required integration completes one representative task.
  • The command-approval and response-detail choices behave as selected.
  • The configured trigger runs: A new message meets the configured mailbox and priority rules.
  • The result follows Watch inbox → Assess priority → Prepare ping → Follow up.
  • The review rule is applied: Use explicit mailbox filters and escalation rules; do not give an agent unrestricted access to sensitive mail.
RECIPE PATH COMPLETE

Email Reminder is ready for a controlled pilot.

Start with a narrow audience and reversible work, then widen access after observing representative tasks.

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