Why Lucy
Most AI platforms are someone else’s cloud. Lucy is a sealed room inside your company — the models come to you.
The brain
Lucy extracts decisions, preferences, and project context from every conversation — and recalls them when they matter. Stored in your database, governed by you, deletable on command. Your team stops repeating itself.
The walls
Self-hosted, your API keys, per-user row-level security. Switch to a local model and sensitive data never leaves the building. No telemetry, no training on your chats, no third party in the room.
The doors
One script tag embeds Lucy in any app you own. Shared auth across your stack, a screening API for your backends, MCP connectors in both directions. The environment is closed — you hold the keys to every door.
Connector marketplace
Browse the connector marketplace, click install, and Lucy can read your repos, query your database, or post to Slack mid-conversation. Secrets are encrypted at rest, and every write action can require your approval first.
GitHub
One-click install
Slack
One-click install
Notion
One-click install
Postgres
One-click install
Linear
One-click install
Stripe
One-click install
Brave Search
One-click install
Filesystem
One-click install
Fetch
One-click install
Your own app
One-click install
Secrets encrypted at rest · write actions can require approval · runs on the open MCP standard
Powerful features
Start in GPT, continue in Claude, finish in Gemini. Compare answers without losing the thread.
Lucy remembers facts, preferences, and decisions across conversations — and you control every byte.
One-click connectors for GitHub, Slack, Notion, Postgres and more. Lucy calls real tools during chat.
Drag-and-drop AI pipelines — branch, transform, call APIs — no code required.
Run Ollama or LM Studio models on your own hardware. Nothing leaves your network.
Built-in and custom personas switch Lucy between coder, writer, analyst — one chip in the input bar.
Talk to Lucy and have replies read aloud — browser-native or Whisper and TTS via your own keys.
A single script tag puts Lucy inside any app you own — widget or full page.
MIT-spirited and Docker-ready. Your keys, your data, your deployment. Free forever.
Integration
<script src="https://lucy.your-company.com/api/embed?project=your-app" async></script>
That’s the whole integration. Lucy appears as a widget inside your product, already aware of your business data.
$ lucy chat
you › what did we decide about the Q3 launch?
lucy › You moved it to October 14 and cut the beta waitlist — decided last Tuesday with Sara.
$ cat error.log | lucy chat "explain this"
$ lucy memories remember "staging DB is on port 6543"
✓ saved
$
Two surfaces, one brain
The Lucy CLI is a thin client over the same API — streaming chat, model switching, memory commands, and admin tools from any shell. Pipe logs into it, script it, keep it in a tmux pane.
Same memory, same encrypted keys, same walls. One lucy login and your terminal knows everything your browser does.
Five built-in themes — Luminous, Industrial, Editorial, Minimal dark, and Light — switch the whole interface in one click.
Built for teams that want to test, compare, and ship AI — self-hosted, on infrastructure you control.
Try Lucy now