# Solsten

**Canonical:** https://apis.io/providers/12traits/  
**Website:** https://solsten.io/  
**APIs profiled:** 1

Solsten (originally 12traits) is a Berlin- and Minneapolis-based psychological-AI company that builds audience intelligence for product, marketing and research teams, pairing validated psychographic measurement with behavioural telemetry to model how real people think, decide and engage. Its product suite spans Traits (assessment-driven psychographic personas for a company's real customers), Navigator (a library of 200,000+ pre-profiled audiences drawn from 2M+ questionnaire respondents) and Elaris (audience-aware generative content). The public developer surface is a small REST API at api.solsten.io covering assessment completion, per-user assessment status, segment/persona user lists and GDPR-style user-data deletion, plus a documented Microsoft Azure PlayFab webhook and a cloud-object-storage bulk ingestion contract for behavioural events and KPIs.

## Kin Score — 40.7 / 100 (developing)

Scored 2026-09-25 under rubric 0.23.0. Trend: flat (+1.6 from 39.1).

| Facet | Score |
|---|---|
| Discoverability | 73.2 |
| Contract Quality | 39.0 |
| Contract Governance | 18.2 |
| Operational Transparency | 21.1 |
| Developer Ergonomics | 45.2 |
| Access Clarity | 35.5 |

Regulatory layer — **Horizontal (data, software, accessibility, platform)**: 32.7 (matched via fallback).

## Agent readiness — 25.2 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | bearer |
| Idempotency | no |
| Error Semantics | documented |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | yes |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## APIs (1)

- **Solsten API** — REST API for the Solsten assessment and persona platform. Documented operations cover listing users who completed an assessment (paged, 500 per page, one-hour cache), checking a...

## Security (3)

- **12Traits Authentication** — 2 schemes
- **12Traits Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC
- **12Traits Vulnerability Disclosure** — Hackerone

## Plans (1)

- **12Traits Plans Pricing**

## Tags

Company, Audience Intelligence, Psychographics, Consumer Insights, Analytics, Artificial Intelligence, Gaming, Market Research, Personalization, Behavioral Data

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/12traits/). Scores are computed from the provider's own public artifacts under a published rubric.