Personality Middleware for Wellness AI

Your chatbot should feel like a person, not a product.

Tolestu is drop-in middleware that attunes any AI to each user's communication style in five questions — so your wellness app feels human from the very first message.

Start building
Without Tolestu
I've been feeling really overwhelmed lately.
I understand. Feeling overwhelmed is common. Here are 5 tips to manage stress...
— after 5 attunement questions —
With Tolestu
I've been feeling really overwhelmed lately.
That sounds heavy. What's sitting on top right now?
The Problem

Generic AI breaks trust
in sensitive contexts.

In wellness, therapy support, coaching, and grief work — the wrong tone at the wrong moment doesn't just feel bad. It ends the conversation.

Cold starts destroy rapport

Every session begins from zero. No memory of how this person communicates, what they need, or how they receive difficult things.

One voice doesn't fit all

A person who needs space gets cheerleading. A person who needs warmth gets bullet points. Generic AI optimizes for average — and average is wrong for everyone.

Trust is the product

In wellness applications, the AI's job isn't just to answer questions. It's to make the user feel safe enough to keep talking. That requires knowing who they are.

How It Works

Attune once.
Feel right every time.

Tolestu slots into your existing stack in minutes. No fine-tuning, no retraining, no infrastructure changes.

01

Five attunement questions

Users answer a brief, psychologically-grounded assessment that captures communication style, emotional regulation preference, tone, and social energy.

02

Tolestu builds a profile

Answers map to a personality model — Direct, Gentle, Quiet, Rebuilder, or Skeptic — and a working memory that grows richer over time.

03

Every response is shaped

The profile injects into your system prompt on every call. Your AI knows who it's talking to before the first message is sent.

Built For

Where tone is everything.

Tolestu was designed for contexts where getting the voice wrong has real consequences.

Mental Health Support Apps

Users in distress need a voice that matches their regulation style immediately. Tolestu ensures your app doesn't open with the wrong energy at the worst moment.

Coaching & Accountability

Some clients want to be pushed. Others need permission. Tolestu reads the difference from day one and keeps your AI in the right lane.

Grief & Loss Support

The space/company question alone changes everything. People in grief don't all need the same thing — Tolestu makes sure they don't all get it.

Neurodivergent-Focused Tools

Communication style variation is the norm, not the exception. Tolestu's attunement model is built for range — not the neurotypical average.

Pricing

Start free.
Scale when you're ready.

All plans include the core Tolestu attunement engine. Upgrade for memory, custom personas, and white-label rights.

Free
$0
forever
Get Tolestu into your app and see what attunement feels like.
  • 5-question attunement wizard
  • 3 base personas
  • npm package access
  • Community support
Platform
$99
per month
White-label Tolestu and make it yours. Full control, full branding.
  • Everything in Studio
  • White-label rights
  • Custom persona creation
  • SLA + dedicated support
  • Multi-tenant management
See It Live

Meet Yorika — Tolestu in the wild.

Yorika is our reference implementation. Five questions, one minute, and you'll feel the difference between a chatbot and something that actually knows how to talk to you.

A Yorika session — attuned to Quiet
I don't really know how to start.
That's okay. There's no right way in.
I've been carrying something for a while.
I'm here. Take your time.