Once the Lucien Slack app is installed, you can talk to Lucien – and control its behavior – using Slack slash commands and mentions.

This page explains each command.

You can also mention Lucien directly in a channel using @Lucien AI instead of a slash command when that feels more natural.

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/lucien — talk to Lucien

Command: /lucien Description: Speak to Lucien (you can also mention Lucien — @Lucien AI).
Usage hint: [question or context]

Use this when you want Lucien to respond to a query or contribute to a thread.

• Ask questions:
  • /lucien What do you think?
  • /lucien Summarize the last 7 days in #sales and highlight risks.
• Get help with writing:
  • /lucien Draft an update for #company-updates about today’s release.
• Ask for plans or checklists:
  • /lucien Turn this thread into a checklist with owners and due dates.

You can run /lucien in channels or DMs where the Lucien app is present.

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/lucien-invite — invite teammates

Command: /lucien-invite
Description: Invite teammates to Lucien. Or you can go to https://app.lucienai.io/dashboard/settings/organization/members.

This command helps you bring more of your team into Lucien.

Typical flow:

• Run /lucien-invite in any channel or DM with the app installed.
• Lucien will guide the selected teammates to join your Lucien workspace and connect their accounts.

Use this when you want to enable Lucien for select members of your team: founders, sales, support, marketing, or ops leads.

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/lucien-link — link your Slack profile

Command: /lucien-link Description: Useful when you (or the person invoking the command) is already a member of your organization in Lucien and needs to link their Slack profile. This won't work for non-members as they need to be invited first.

Linking your profile tells Lucien which human is behind a Slack user ID.

Why this matters:

• Approvals and actions can be correctly attributed to you, not just "some Slack user".
• Lucien can personalize prompts, responses and briefs for you (for example, focusing on the accounts or projects you own).

Usage:

• Make sure you’re a member of your company’s Lucien workspace.
• In Slack, run /lucien-link.
• Follow the instructions to complete the link.

If you’re not yet in the Lucien workspace, ask the founder/admin to invite you (they can use /lucien-invite).

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/lucien-memory — toggle passive memory in a channel

Command: /lucien-memory Description: Toggle passive memory in this channel. Passive memory lets Lucien capture durable context/decisions/plans in channels and private groups it belongs to. Passive memory is enabled by default.
Usage hint: "on|off"

Passive memory is how Lucien keeps track of important context over time without you having to tag every message.

• When on (default):
  • Lucien quietly ingests messages in that channel and builds summaries.
  • You can later ask things like "What did we decide in #ops last week?" or "Prepare an internal fundraising memo to communicate progress and milestones"
• When off:
  • Lucien will only see and use messages when you explicitly call it (via /lucien or @Lucien).
  • Background summarization and memory building for that channel is paused.

Examples

• Turn passive memory off in a sensitive channel:
  • /lucien-memory off
• Turn it back on when you want Lucien to start capturing context again:
  • /lucien-memory on

You can run /lucien-memory in any channel or private group where the Lucien app is present. Channel‑level control means different parts of your workspace can have different memory settings.