LinkGravity

A Discord, Telegram, and Slack bot interface for the Antigravity agentic AI system. It translates Antigravity CLI prompts into chat UI components and provides voice interaction capabilities.

Features

• Environment Sync: Automatically syncs with the host's ~/.gemini configuration.
• Voice Interaction: Supports voice channels with adaptive voice activity detection to segment speech and filter environmental noise, plus live "listening..." feedback while you're still talking.
  • Wake Word Recognition: Uses phoneme-level similarity to detect wake words and activate voice commands.
• Approval Flow: Command and tool-call approvals become interactive chat buttons. Chained shell commands are approved individually, and any approval can be scoped to auto-allow that command or tool going forward - something plain agy doesn't do.
• Multi-Modal Input: Attach files for the AI to read, including audio, which gets transcribed to text automatically.

Supported Platforms

| | Discord | Telegram | Slack | | ------------------------- | ------- | -------- | ------- | | Sessions | Threads | Flat | Threads | | Voice | ✓ | ✗ | ✗ | | Approval buttons | ✓ | ✓ | ✓ | | File attachments | ✓ | ✓ | ✓ | | Session title auto-rename | ✓ | ✗ | ✓ | | DMs | ✓ | ✓ | ✓ | | Group | ✓ | ✗ | ✓ |

Requirements

• Node.js >= 18
• Python >= 3.10
• Antigravity CLI installed on this machine
• A messenger bot token, and at least one server/channel to allow it in - Discord, Telegram, and Slack are all supported, and you can enable more than one at once

Creating the Discord bot

In the Discord Developer Portal:

1. New Application, name it, then go to Bot in the left sidebar.
2. Under Privileged Gateway Intents, enable Message Content Intent - required, since the bot reads message text/attachments.
3. Click Reset Token to reveal the bot token, and copy it - this is what goes into lgy setup's discord_token.
4. Go to OAuth2 > URL Generator in the sidebar. Under Scopes, check bot and applications.commands. Under the Bot Permissions box that appears below, check:
   • Send Messages, Send Messages in Threads, Create Public Threads
   • Read Message History, Attach Files, Embed Links, Add Reactions
   • Connect, Speak (for voice channel support)
5. Copy the Generated URL at the bottom of that page, open it in a browser, and invite the bot to your server.

Creating the Telegram bot

Message @BotFather on Telegram, send /newbot, and follow the prompts to get a bot token. No further permission setup is needed - Telegram sessions are 1 chat = 1 session, so just message your bot directly (or add it to a group) and run /new.

Creating the Slack app

Slack has more moving parts than the others - two separate tokens, and a few settings pages that gate each other. Going in this order avoids re-doing steps:

1. Go to api.slack.com/apps > Create New App > From scratch, name it, and pick your workspace.
2. Socket Mode (left sidebar) > toggle it on. This avoids needing a public HTTP endpoint. Slack will prompt you to generate an app-level token here - name it anything, add the connections:write scope, and Generate. Copy this token (starts with xapp-) - this is slack_app_token.
   • If it doesn't prompt you, go to Basic Information > App-Level Tokens > Generate Token and Scopes instead.
3. OAuth & Permissions (left sidebar) > scroll to Scopes > Bot Token Scopes (not User Token Scopes - that's a different section further up the page, for a different token, and is not used here). Add an OAuth Scope for each of: chat:write, channels:history, groups:history, im:history, mpim:history, reactions:write, files:read, files:write.
4. Scroll to the top of that same page > Install to Workspace > Allow. This generates the token under OAuth Tokens > Bot User OAuth Token, starting with xoxb-. Copy that one - this is slack_bot_token.
   • It's easy to grab the wrong token here - the page also shows a User OAuth Token (xoxp-...) further down, which is a different thing and won't work for this bot.
5. App Home (left sidebar) > under Show Tabs, turn on Messages Tab, then check Allow users to send Slash commands and messages from the messages tab - this is what lets you DM the bot at all. (If this section looks greyed out, it's because step 3 hasn't been saved/installed yet - go back and do that first.)
6. Event Subscriptions (left sidebar) > toggle Enable Events on > under Subscribe to bot events, add message.channels, message.groups, message.im, and message.mpim > Save Changes.
7. Slash Commands (left sidebar) > Create New Command, three times, for /new, /model, and /credit (any description/hint text is fine - only the command name matters).
8. Back on OAuth & Permissions, since scopes/events changed after the initial install, click Reinstall to Workspace to push those changes live. Any time you change scopes or events later, you'll need to repeat this step.
9. In Slack itself, for any channel (not DM) you want the bot usable in, run /invite @<your bot's name> there first - the bot can't post in a channel it hasn't been added to.

Installation

npm install -g linkgravity

Sets up its own Python environment automatically - no manual pip install needed.

Setup

Run the configuration wizard once to pick which platform(s) to enable and set their tokens, allowed users, and other settings:

lgy setup

This writes to ~/.gemini/linkgravity/lgy.json, outside the package directory, so npm update/reinstall never touches it. You can re-run lgy setup any time to change settings later - each field keeps its current value if you leave it empty. Discord, Telegram, and Slack can all be turned on independently; the bot runs whichever ones are enabled in a single shared process.

For Discord, during setup you'll be asked for one or more servers to allow, and optionally specific channels within each:

• Leave the channel list empty for a server → the whole server is allowed - any channel can start a session.
• List specific channel IDs for a server → only those channels in that server are allowed.

Telegram and Slack have no server/channel gating yet - every chat/channel you message the bot from can start a session, subject to the allowed-users list you set during setup.

A new session is started with the /new slash command - never just by typing a message. On Discord and Slack, /new works both in a regular channel and from inside an existing thread; on Telegram, it applies to whichever chat you send it in.

Usage

lgy start      # Start the bot as a background daemon via PM2
lgy stop       # Stop it
lgy restart    # Restart it
lgy logs       # View live logs - add -f to follow, --tail N for more lines
lgy enable     # Register the bot to auto-start on system boot
lgy disable    # Remove it from system boot
lgy            # Interactive menu - same commands, picked from a list

Development

npm i

That's it - it wires up Ruff for Python and Prettier for Node, plus git hooks that lint/format on commit and enforce Conventional Commits commit messages.

Debugging

LOG_LEVEL=DEBUG lgy start

Use lgy logs -t to include timestamps.

Security Warning

This bot gives an AI agent broad access to the machine it runs on - that's inherent to what it does, so don't expose it publicly or run it somewhere you don't fully trust its users.

• The allowed-users list for each platform, set via lgy setup, is your primary access control - always set it.
• Tool calls, including shell commands, go through an approval flow by default; treat anyone on an allowed-users list as having effectively full control of this machine.
• Your bot tokens and other settings live in ~/.gemini/linkgravity/lgy.json, outside this repo/package directory - never commit or share that file.