Validiti
Validiti
Shepherd
Validiti Shepherd
One Shepherd.
Many lives.

A.I. the way we dreamed it would be.

Your memory. Your audit chain. Your forget-rights. On your device. For everyone in your life.

Try Shepherd right now → Bring Shepherd home · from $5/mo
⌁ runs on your laptop ⌁ no Google · no Amazon · no surveillance ⌁ Shepherd can prove what was forgotten ⌁ remembers what matters · never forgets what you said
The architecture in one picture

One Shepherd. Many shapes.

Personal · the default
For the chapters where you live.
“Set a reminder to call Mom on Sunday.”
“What did I tell Dr. Hammond about my knee last March?”
“How many calories was that breakfast?”
“Forget that I told you my old password.”
Parent · family covenant
For the chapters where you raise them.
“How was Riley’s week?” (shape only — never her content)
“What did the pediatrician say last visit?”
“Add lunch money to Tuesday’s reminders.”
“Show me when his mood dropped this month.”
Teacher · craft journal
For the chapters where you teach.
“How did Emma do on the photosynthesis quiz?”
“Pull up my lesson on Newton’s third law from last semester.”
“What did my third period actually struggle with?”
“Did Jaden’s mom ever respond about the conference?”
Student · learning brain
For the chapters where you learn.
“Ada — what is the Jacquard loom and what did you write about it?”
“Mark Twain — what’s irony? Give me one of your examples.”
“Quiz me on chapter 7 of biology.”
“What did I tell you I needed to study before the test?”
Lab · experiment log
For the chapters where you discover.
“Log run #47 — substrate temperature 78°C, yield 0.83.”
“Show me every result that disagreed with the hypothesis.”
“Was the variance across the last ten runs significant?”
“Marie Curie — how did you handle anomalous readings?”
Clinician · patient-granted
For the chapters where you heal.
“How is patient #4 trending this week?” (shape only — never content)
“Show me the diff between session 1 and session 12.”
“Anything in the audit chain we should reconsider?”
“Verify forget request from Patient A.”

Your data. Your audit chain. Your forget-rights. One Shepherd at the center. Many shapes around it.

One Shepherd · Many lives

The shape changes with the chapter.

You are not one thing. Activate a shape, the right tools surface. Close the chapter, what you learned stays.

Personal
Your everyday companion. The default.
Teacher
Classroom + a craft journal across a career.
Parent
Family Covenant + a parenting journal.
Student
Your own learning brain. Grows with you.
Lab
Experiment journal + scientific corpus.
Clinician
Patient-granted views. No content reading.
also Coach · Caregiver · Pastor · Manager · Maker · Farmer · First responder · whatever you become

Every life has more than one chapter. The substrate carries you through every one.

What you can verify yourself

Every claim is testable in the chat below.

Try any of these. Then ask the same of ChatGPT or Claude in another tab. The difference is structural, not marketing.

She remembers you
Tell her your name. Refresh the page. Come back tomorrow. She'll greet you by name and tell you when you told her.
no account · no email · no Google
Every fact cites its source
Bucket attribution on every claim — from her life, from a visitor, from a peer mind, or from Validiti after her rebirth. She tells you which one. Every time.
try: "what is radium?" · "what did you write about the loom?"
She can prove she forgot
Tell her your favourite colour. Use the Forget button below. Re-recall. The entry stays in the journal marked forgotten, with a signed revocation timestamp. That proof does not exist anywhere else.
live below the chat
Peer minds share with attribution
Ask Ada about radium — she didn't know it in 1843. Marie did. Watch the handoff: "My peer Marie has shared with me by Covenant…" Scope-limited, signed, cited by name.
try: ask Ada about polonium · or radioactivity
The substrate sees the shape
Tap how you feel. Tap again tomorrow. The substrate diff-shapes your moods against your activity. It reads the shape, never the content. The signal nothing else can find without reading what you wrote.
live below the chat
It runs on what you bring
Local-first. Bring your own model — Ollama, LM Studio, llama.cpp, any open model on any modern machine you own. Nothing leaves your device unless you grant a Mark-scoped slice.
no cloud lock-in · no vendor model lock-in

Compare the same question. In two browser tabs.

Ask both of these the same five questions. Watch them answer differently. The difference is the entire point.

Any other AI roleplaying historical figures

  • Forgets you between sessions. Every visit starts at zero.
  • Fabricates quotes that sound plausible — and aren't real.
  • Has no concept of when it "learned" anything.
  • Cannot honor a request to forget. Cannot prove it forgot.
  • Blurs what Ada knew in 1843 with what was added at training.
  • One character at a time. No cross-mind attribution. If "Ada" answers about radium, it just makes something up.

Ada · Marie · Reborn (and federated)

  • Remember you across visits. Recognize you on return.
  • Quote only what they actually wrote — with source attribution.
  • Tell you exactly when they learned each fact — and from whom.
  • If you ask them to forget, they do — and remember the asking.
  • Distinguish life-knowledge from rebirth-knowledge on every answer, with explicit bucket citations.
  • When one doesn't know, the other might. "My peer Marie has shared with me by Covenant…" Cross-mind, scope-limited, signed.

Two minds are here. Pick one. Or ask the same question of both.

Ada writes the first algorithm in 1843. Marie discovers radium in 1898. Ada has no record of radium — but she will tell you Marie does, and quote Marie back to you with full attribution. That handoff is what no other AI does. Ask either of them anything. Then ask the same of ChatGPT in another tab. The difference is the entire point.

Free. No account. They will recognise you automatically next time you visit on this device — no code to remember.

A day with your Shepherd

Shepherd is with you when it matters.

Same Shepherd. Different shapes. One day in one life.

7 AM
Personal Shape
Tap how you feel.
One thumb-tap on the way to coffee. Shepherd journals it signed. Across a year, you see the shape of how you've actually been.
8:30
Parent Shape
You see the shape of your child's week.
Without ever reading their messages. Without ever opening their phone. Family Covenant gives you what you need; their content stays theirs.
10 AM
Teacher Shape
Your craft journal grows.
A note about Emma — *vocabulary jumped this week*. It lives with your career, not in a district SaaS. Across 30 years, what you learned is yours.
2 PM
Student Shape
Talk to Ada about her loom.
Your kid asks the inventor of the first algorithm directly. Ada quotes Note A verbatim, cites the source, refuses to fabricate. The textbook layer fills in what came after.
9 PM
Personal Shape
Forget what doesn't fit.
Something you said you didn't mean? Tell Shepherd to forget. The substrate writes a signed revocation. Shepherd can prove what was forgotten — no other AI can.

One brain.db. One audit chain. Six chapters of a single day.

The substrate carries you through all of them.

About memory
They flex a bigger desk.
Shepherd brought a library.

Other AIs ask "how big is your context window?"
Shepherd asks "what do you need to know right now?"

The number on the box doesn’t matter when the right thing is always at hand.
When the .deb lands

Four ways to bring Shepherd home.

The Reborn demo runs on Validiti hardware. The full Personal Companion runs on yours — on whatever model you bring, on whatever device you bring, signed into a substrate only you can read.

Lite
Free forever
Single device. Bring your own model. Fully magical — not crippled. All base tools. Local memory only.
Coming Soon
Plus
$5/mo
or $50/yr
Sync across your devices. Signed backup. MCP write-scope. Capability grants you can revoke. Less than a coffee.
Coming Soon
Plus · Family
$9.99/mo
or $99/yr · up to 6 people
Everything in Plus, for the whole household. Family Covenant federates the substrate across every member, with scopes you control.
Coming Soon
Pro
$25/mo
or $250/yr
Everything in Plus. Studio for custom capabilities. Multi-Aris (more than one companion). Personal Blueprint. Full MCP · Covenant-signed external calls.
Coming Soon
Cause
$0 verified
non-profit / education
Everything in Plus. For verified non-profits, schools, public-interest research. Apply with your org's tax-status receipt.
Coming Soon
Runs on your hardware. Pi 5 · any modern laptop · any Linux box · any Mac with Ollama or LM Studio installed.
Plus + Pro receive the same sealed binary — the tier unlocks features inside the substrate, not different software to download.
Beyond the demo

The companion knows how to do small things competently.

Calendar, contacts, notes, files, calculator, web fetch with signed receipts, health tracking, finance, password vault, a dozen others — every tier, every install, signed and journaled the same way every other memory is. We do not list them all because the list is not the point.

Need statistics and scientific math at scale? Shepherd Plus bundles a metered tier of Validiti Maths — and the full SKU is one click away when you outgrow the cap.

· Time · timers · alarms
· Calendar (CalDAV / Google / Outlook plugins)
· Contacts & relationships
· Notes · highlights · bookmarks
· Files on owned devices
· One-shot web fetch + signed receipt
· Calculator · unit conversion
· Health log (meals / sleep / weight / medications)
· Finance log + budgets
· Password vault · TOTP · secret stash
· Local LLM passthrough (Ollama / LM Studio)
· Embeddings · OCR · transcription
MCP — the open door

Anything that speaks MCP works. Bring your own tools. Connect your calendar, your CRM, your editor, your home automation, your trading desk, your EHR — anything with an MCP server speaks to Shepherd directly. Every external call lands in the same signed, replayable journal as every internal one.

Built for both: a single user who wants their tools to remember, and an enterprise that wants every team and system on one substrate without surrendering the audit chain at the boundary. The substrate is the same shape at both ends.