# Universal Hydrogen

**Canonical:** https://apis.io/providers/universal-hydrogen/  
**APIs profiled:** 0

Universal Hydrogen Co. was a Hawthorne, California hydrogen-aviation startup founded in 2020 by former Airbus CTO Paul Eremenko to decarbonize regional air travel. Rather than building a hydrogen pipeline network, it proposed a modular capsule model: lightweight hydrogen capsules loaded into aircraft with existing cargo handling equipment, paired with fuel-cell powertrain conversion kits for regional turboprops such as the ATR 72 and De Havilland Dash 8. In March 2023 it flew a converted Dash 8-300 testbed with one propeller driven by a hydrogen fuel cell. The company raised roughly $100 million from backers including GE Aviation, American Airlines, JetBlue Ventures, Airbus Ventures, Toyota Ventures and Mitsubishi. Unable to raise further equity or debt or to find a buyer, it ceased operations on 27 June 2024 and liquidated. It was a hardware and fuel-logistics business and never shipped a public API, SDK, developer portal or machine-readable specification; its domains no longer serve a site.

## Kin Score — 2.4 / 100 (minimal)

Scored 2026-09-02 under rubric 0.18.0.

| Facet | Score |
|---|---|
| Discoverability | 46.3 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 5.3 |
| Developer Ergonomics | 0.0 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

Regulatory layer — **Energy & Utilities**: 0.0 (matched via tags).

## 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 |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Tags

Company, Defunct, Aviation, Aerospace, Hydrogen, Clean Energy, Fuel Cells, Sustainability, Decarbonization, Hardware, Logistics

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