# Hermeus

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

Hermeus is an American aerospace and defense company building rapidly reusable high-Mach and hypersonic aircraft for national-security missions in partnership with the U.S. Department of Defense. Founded in 2018 and headquartered in Atlanta, Georgia, the company applies a hardware-rich, rapid design-build-test approach to move quickly from concept to flight. Its programs include Quarterhorse, a reusable high-speed flight-test aircraft; Darkhorse, a multi-mission reusable hypersonic uncrewed aerial system (UAS); and Chimera, a hybrid turbine-based combined-cycle engine that transitions from turbojet takeoff through supersonic flight into hypersonic acceleration. Hermeus is a hardware manufacturer with no public developer API, SDK, or documentation surface; this profile tracks the company's public web, security, and corporate properties in the API Evangelist network.

## Kin Score — 5.5 / 100 (minimal)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 5.5).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 2.4 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

## 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 (1)

- **Hermeus Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Company, Aerospace, Defense, Hypersonic, Aviation, Manufacturing, Hardware, National Security

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