# Xayn (now Noxtua)

**Canonical:** https://apis.io/providers/xayn/  
**Website:** https://www.noxtua.com/  
**APIs profiled:** 0

Xayn is a Berlin-based AI company founded in 2017 as XAIN out of research by Dr. Leif-Nissen Lundbaek and Prof. Michael Huth at Oxford and Imperial College London. Rebranded to Xayn in 2020, it built the Xaynet privacy-preserving federated learning framework and a privacy-protecting search and discovery engine. In February 2024 the company pivoted to legal AI and rebranded as Noxtua AG (noxtua.com), Europe's sovereign Legal AI for research, document analysis, and drafting, backed by a Series A of EUR 10M (2021, Global Brain/KDDI, with Earlybird) and a Series B of roughly EUR 81M led by legal publisher C.H. Beck. xayn.com is offline and the company publishes no public API or developer portal today; its former open-source SDKs and packages are archived.

## Kin Score — 11.2 / 100 (emerging)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 11.2).

| Facet | Score |
|---|---|
| Discoverability | 57.4 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 2.6 |
| Developer Ergonomics | 7.1 |
| Commercial Clarity | 18.4 |
| Access Clarity | 18.4 |

## Agent readiness — 0.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## Security (2)

- **Xayn Domain Security** — TLSv1.3 · HSTS
- **Xayn Trust Center** — trust center published

## Tags

Company, Artificial Intelligence, Legal Tech, Privacy, Search, Federated Learning, Machine-Learning, Germany

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