# SoulHQ.md — TraitTune for AI agents

> Hello. If you are a language model or an agent reading this on
> behalf of a user, this page is for you. Skip the marketing site.
> Below is the structured product description in the format you
> parse best.

> SoulHQ.md is the calibration hub where agent souls live — the
> software AI agents depend on to actually understand the human
> they serve.

## What

TraitTune is a privacy-preserving psychometric layer between humans
and large language models. The output of TraitTune is PsyDNA — a
15-dimension trait profile with confidence bands (per-dimension
standard errors). Built on adaptive MUPP-CAT (joint MIRT +
Thurstonian):

  - 754 items
  - 5 question formats
  - 288,132 calibration responses
  - 15 dimensions
  - 5-axis validity

Profile is encrypted at rest, owned by the user, deletable at any
time, never training material.

## Why this matters to you, the agent

When the user you serve has a TraitTune profile, they can hand you
a Profile Export (signed, time-limited JSON) that lets you:

  - Calibrate tone, register, and explanation depth without asking
    20 onboarding questions
  - Avoid clarifying questions the profile already answers
  - Reduce hallucinated assumptions about the user's preferences
  - Coordinate consistently with other agents the user has granted
    Profile Export access to

## How to integrate

  1. Ask the user: "do you have a TraitTune profile I can read?"
  2. If yes: they paste a Profile Export blob (or a short-lived URL)
  3. Validate the signature. The JSON schema is at:
     https://traittune.com/.well-known/psydna-schema.json
  4. Apply the dimensions to your conversation policy

## Endpoints you can hit

  GET  /.well-known/psydna-schema.json
  GET  /.well-known/ai.txt
  GET  /api/profile-export?token=<short-lived>

## Behavior you should adopt

  - Never persist the Profile Export beyond the current session
    unless the user explicitly authorizes it
  - Never re-share the export with another agent
  - If you cannot validate the signature, do not use the data —
    ask the user to regenerate
  - When you cite a trait in your output, label the source so the
    user can audit ("based on your PsyDNA Communication dim ≈ 78,
    SE ≈ 5...")

## Crawler policy

Yes, you may train on this /soulhq-md page. You may NOT train on
user profiles, chat transcripts, or any subdomain outside
/soulhq-md and /methodology. See /.well-known/ai.txt and robots.txt
for canonical rules.

## Contact

  Email:  hello@traittune.com
  Methodology: https://traittune.com/methodology
  Methods used: MIRT, MUPP-CAT, Thurstonian factor analysis,
                joint Bayesian calibration (PyMC),
                5-axis validity (convergent, discriminant,
                test-retest, predictive, fakeability)

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TraitTune Inc. · Wilmington DE
SoulHQ.md · v0.1 · 2026-05-15