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Discord Setup for LettaBot

This guide walks you through setting up Discord as a channel for LettaBot.

Overview

LettaBot connects to Discord using a Bot Application with the Gateway API:

  • No public URL required (uses WebSocket connection)
  • Works behind firewalls
  • Real-time bidirectional communication

Prerequisites

  • A Discord server where you have permission to add bots
  • LettaBot installed and configured with at least LETTA_API_KEY

Step 1: Create a Discord Application

  1. Go to https://discord.com/developers/applications
  2. Click "New Application"
  3. Enter a name (e.g., LettaBot)
  4. Click "Create"

Step 2: Create the Bot

  1. In the left sidebar, click "Bot"

  2. Click "Reset Token" (or "Add Bot" if this is new)

  3. Copy the token - this is your DISCORD_BOT_TOKEN

    Important: You can only see this token once. If you lose it, you'll need to reset it.

Step 3: Enable Message Content Intent

This is required for the bot to read message content.

  1. Still in the "Bot" section
  2. Scroll down to "Privileged Gateway Intents"
  3. Enable "MESSAGE CONTENT INTENT"
  4. Click "Save Changes"

Step 4: Generate Invite URL

  1. In the left sidebar, go to "OAuth2" → "URL Generator"
  2. Under "Scopes", select:
    • bot
  3. Under "Bot Permissions", select:
    • Send Messages
    • Read Message History
    • View Channels
  4. Copy the generated URL at the bottom

Or use this URL template (replace YOUR_CLIENT_ID):

https://discord.com/oauth2/authorize?client_id=YOUR_CLIENT_ID&permissions=68608&scope=bot

Tip: Your Client ID is in "General Information" or in the URL when viewing your app.

Step 5: Add Bot to Your Server

  1. Open the invite URL from Step 4 in your browser
  2. Select the server you want to add the bot to
  3. Click "Authorize"
  4. Complete the CAPTCHA if prompted

You should see [Bot Name] has joined the server in Discord.

Step 6: Configure LettaBot

Run the onboarding wizard and select Discord:

lettabot onboard

Or add directly to your lettabot.yaml:

channels:
  discord:
    enabled: true
    token: "your-bot-token-here"
    dmPolicy: pairing  # or 'allowlist' or 'open'

Step 7: Start LettaBot

lettabot server

You should see:

Registered channel: Discord
[Discord] Connecting...
[Discord] Bot logged in as YourBot#1234
[Discord] DM policy: pairing

Step 8: Test the Integration

In a Server Channel

  1. Go to a text channel in your Discord server
  2. Type @YourBot hello!
  3. The bot should respond

Direct Message

  1. Right-click on the bot in the server member list
  2. Click "Message"
  3. Send a message: Hello!
  4. The bot should respond (may require pairing approval first)

Access Control

LettaBot supports three DM policies for Discord:

Pairing (Recommended)

dmPolicy: pairing
  • New users receive a pairing code
  • Approve with: lettabot pairing approve discord <CODE>
  • Most secure for personal use

Allowlist

dmPolicy: allowlist
allowedUsers:
  - "123456789012345678"  # Discord user IDs
  • Only specified users can interact
  • Find user IDs: Enable Developer Mode in Discord settings, then right-click a user → "Copy User ID"

Open

dmPolicy: open
  • Anyone can message the bot
  • Not recommended for personal bots

Adding Reactions

LettaBot can react to messages using the lettabot-react CLI:

# React to the most recent message
lettabot-react add --emoji ":eyes:"

# React to a specific message
lettabot-react add --emoji ":thumbsup:" --channel discord --chat 123456789 --message 987654321

Troubleshooting

Bot shows as offline

  1. Make sure LettaBot is running (lettabot server)
  2. Check for errors in the console
  3. Verify your bot token is correct

Bot doesn't respond to messages

  1. Check MESSAGE CONTENT INTENT is enabled:

    • Discord Developer Portal → Your App → Bot → Privileged Gateway Intents
    • Toggle ON "MESSAGE CONTENT INTENT"

  2. Check bot has permissions in the channel:

    • Server Settings → Roles → Your Bot's Role
    • Or check channel-specific permissions

  3. Check pairing status if using pairing mode:

    • New users need to be approved via lettabot pairing list

"0 Servers" in Developer Portal

The bot hasn't been invited to any servers yet. Use the invite URL from Step 4.

Bot can't DM users

Discord bots can only DM users who:

  • Share a server with the bot, OR
  • Have previously DM'd the bot

This is a Discord limitation, not a LettaBot issue.

Rate limiting

If the bot stops responding temporarily, it may be rate-limited by Discord. Wait a few minutes and try again. Avoid sending many messages in quick succession.

Security Notes

  • Bot tokens should be kept secret - never commit them to git
  • Use dmPolicy: pairing or allowlist in production
  • The bot can only see messages in channels it has access to
  • DMs are only visible between the bot and that specific user

Cross-Channel Memory

Since LettaBot uses a single agent across all channels:

  • Messages you send on Discord continue the same conversation as Telegram/Slack
  • The agent remembers context from all channels
  • You can start a conversation on Telegram and continue it on Discord

Next Steps