# Newcleo

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

Newcleo is a nuclear energy company founded in September 2021 by Stefano Buono, Luciano Cinotti and Elisabeth Rizzotti, headquartered in Paris with operations across France, Italy, the United Kingdom, Switzerland, Belgium and Slovakia. It designs small modular lead-cooled fast reactors (LFR) fuelled with mixed oxide (MOX) fuel made from reprocessed spent nuclear fuel, with the aim of closing the nuclear fuel cycle and reducing long-lived waste. The group employs roughly 1,000 people, has raised over EUR 780 million, and has grown by acquisition (Hydromine Nuclear Energy, SRS-Fucina, Rutschi Group). Newcleo publishes no public developer API or developer program; its only public machine-consumable software is a small set of open-source scientific Python libraries released through its newcleo-dev-team GitHub organisation.

## Kin Score — 6.7 / 100 (minimal)

Scored 2026-08-17 under rubric 0.11.0. Trend: flat (+0.0 from 6.7).

| Facet | Score |
|---|---|
| Discoverability | 57.4 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Operational Transparency | 5.3 |
| Developer Ergonomics | 0.0 |
| Commercial Clarity | 0.0 |

Regulatory layer — **Energy & Utilities**: 8.1 (matched via tags).

## Agent readiness — 0.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | 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 |

## Security (1)

- **Newcleo Domain Security** — TLSv1.3 · DMARC

## Tags

Company, Energy, Nuclear Energy, Clean Energy, Reactors, Deep Tech, Manufacturing, Open Source, Scientific Computing

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