# Zephyr Fusion

**Canonical:** https://apis.io/providers/zephyr-fusion/  
**Website:** https://www.zephyrfusion.com/  
**APIs profiled:** 0

Zephyr Fusion is a Y Combinator (Fall 2025) company building the first in-orbit fusion power source: a compact, megawatt-class magnetic-confinement fusion reactor designed to enable large-scale industry in space at a fraction of the cost of equivalent solar. Founded by former Lawrence Livermore and Oak Ridge National Laboratory physicists, the company targets microgravity manufacturing, orbital data centers, defense, propulsion, and human habitation in space, exploiting the vacuum of space to accommodate larger plasma regions than Earth-based reactors. As an early-stage deep-tech hardware company, Zephyr Fusion currently publishes no public API, developer platform, SDK, or machine-readable specification; this profile captures its identity in the API Evangelist network. An enrichment pass on 2026-07-21 confirmed no API surface exists (no api./docs./developer. hosts resolve; no /developers, /docs, or /.well-known discovery surface is published).

## Kin Score — 2.1 / 100 (minimal)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 2.1).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 0.0 |
| 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 |

## Access

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

## Tags

Company, Fusion Energy, Nuclear Fusion, Space, Deep Tech, Clean Energy, Hardware, Y Combinator

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