The thread that holds
You have good intentions. Life just gets in the way.
Most of us are losing touch with the people who matter most. Yuisei helps you remember what matters and follow through.
14-day free trial
Made for follow-through
Intentions and gentle nudges for the people you choose.
Private by default
Your contacts and notes stay under your control.
Bring relationship context into the assistant you already trust.
Agent connections
Your relationship memory, wherever you work.
Bring the context you keep in Yuisei to the MCP-compatible assistant you already trust, so the next thoughtful action is easier to take, without turning a relationship into an automation.
Remember what matters before you meet
Ask your assistant for a thoughtful briefing. It can bring forward the details you chose to keep in Yuisei, so you arrive present instead of searching for context.
Ask your assistant
“What should I remember before seeing Maya?”
Maya starts her first week leading the community team on Monday. She was excited about the neighborhood garden project, and you promised to send the volunteer link.
Recall contacts, notes, activities, and intentions without changing your Yuisei data.
Full read/write is a separate choice for each connection, not a default for every assistant.
Turn off a named connection from Yuisei settings whenever the work is done.
Start with your own relationship memory
Build your private relationship memory in Yuisei first. When you are ready, you can choose whether an assistant may read or update it.
Intentions
Set intentions, not reminders
Because “call Mom weekly” is a value, not a task. Build streaks, track fulfillment, and let your relationships reflect who you actually want to be.
Mom
Call · Weekly
You connected with 2 of 3 people this week. Good progress.
Relationship health
See who's warming up and who's fading
Before it's too late. Health scores update automatically based on your interactions, intentions, and communication patterns.
Contacts
Your people, imported from everywhere
Google, Apple, LinkedIn: bring all your contacts into one place. Smart deduplication, enriched profiles, and intuitive organization with tags and groups.
Alex Rivera
Staff Engineer at Stripe
Sam Chen
Design Lead at Vercel
Calendar and activities
Every coffee, call, and dinner, tracked without the busywork
Sync your calendars, log activities with a tap, and watch your intentions auto-fulfill when you follow through.
Coffee with Alex Rivera
Dinner with Sam & Taylor
Call with Mom
Gifts and notes
Remember the details that make people feel known
Track gift ideas as they come to you. Keep relationship notes so you never forget what matters.
Mar 12 - Coffee with Alex
Alex is really excited about the new role. Mentioned wanting to learn more about management. Recommended “The Manager's Path” by Camille Fournier. They're planning a trip to Portugal in June.
The science
Intentional relationships need structure
We are more connected than ever digitally, yet lonelier than ever emotionally. Yuisei is built around the constraint, not in denial of it.
The cognitive limit on meaningful relationships any one person can maintain.
Americans report feeling serious loneliness regularly.
Harvard, 2023
The innermost layer of close relationships people rely on in crisis.
Average meaningful social interaction time per day.
BLS
Pricing
Simple, transparent pricing
Every plan starts with a 14-day free trial. Cancel anytime.
Every plan includes named, revocable agent connections with Read only or Full read/write access.
14-day free trial included
- 500 actions/month
- 1,000 active contacts
- 3 automation rules
- 1 calendar
- AI-powered insights
14-day free trial included
- 2,000 actions/month
- 5,000 active contacts
- Unlimited automation rules
- Unlimited calendars
- X/Twitter sync
- Exa enrichment
- Mobile app
- Priority support
An action is one automated step Yuisei runs for you, such as an enrichment, a message draft or a contact sync.
Go past your plan's actions and nothing stops: extra actions are billed at the end of the cycle ($0.03 per action on Starter and $0.02 on Pro). Usage and action packs live in Billing.
Start today
Your people are waiting. Follow through.
Build a private system that remembers with you and works with the assistant you already trust.