Give your app
your user's memories
Your users connect 
Google Drive, 
Notion, 
Gmail and 
Calendar once. Your app gets what they know, kept in sync and searchable through one API.
Google DriveNotionGmailGoogle Calendar
What your app knows about Maya
Shoot day every Thursday, 2 to 5 pm
from Google Calendar · just nowSam would rather talk on a call than email
from Gmail · 2 min agoBrand guide: warm colors, no all caps
from Google Drive · 4 min agoQ4 goal: 10k subscribers by December
from Notion · 6 min ago
Your App's AI
It answers with what Maya already knows. Pick a question.
One link to connect
Send your user a link. They pick their account and come right back to your app. The newest files sync first, and we keep everything up to date after that.
Your app
Google DriveConnectNotionConnectYour App uses Constella to connect your Google Drive
ContinueYou pick your Google account next
Back in your app
Google DriveConnectedStarting the first sync
Search by meaning
Ask in plain words. You get the user's memories and their docs back together, each one saying where it came from.
- Wants 12k subscribers by DecemberMemory0.82
- Q4 content planNotion0.74
- Brand guide 2026.pdfGoogle Drive0.61
Plug it into your AI
Give your AI a short-lived MCP token. It can search and read that one person’s memory and apps, and nothing else.
Plan Maya's next three videos
search "Maya goals and hooks that worked" 6 found
fetch Q4 content plan read
Three ideas built on her goal of 12k subscribers, each opening with a question in the first two seconds, the hook that worked best for her before.
NotionKnow when things change
Signed webhooks tell your server when an app connects, when the first sync is done, and when new things arrive.
- connection.connectedgoogle-drive200
- sync.initial_completedrecords: 1,204200
- sync.updatednew_records: 4200
Save what your app learns
When your user tells your app something, save it with one call. From then on, your app remembers it.
Morning, Maya! Want me to draft today's post?
MMaya's memory
Likes calm, slow edits
kind: style · 3 days agoWants 12k subscribers by December
kind: goal · last week
Saved with one call: POST /memories
Every user kept apart
Each of your users gets their own space. Delete one with a single call and everything they synced goes with it.
DELETE /v1/users/leo_7
Start with one user
We're setting up a few teams by hand right now. Tell us what you're building and we'll send your keys.
Get API access
