Hermeus website screenshot

Hermeus

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.

Hermeus is profiled on the APIs.io network. Tagged areas include Company, Aerospace, Defense, Hypersonic, and Aviation.

Hermeus’ developer surface includes engineering blog and 6 more developer resources.

🌐 Visit website 📡 Source on GitHub
11.4/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5
0 APIs
CompanyAerospaceDefenseHypersonicAviationManufacturingHardwareNational Security

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 11.4/100 · minimal
Contract Quality 0.0 / 25
Developer Ergonomics 0.4 / 20
Commercial Clarity 4.2 / 20
Operational Transparency 0.0 / 13
Governance 0.0 / 12
Discoverability 6.8 / 10
Agent readiness — 0/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/hermeus: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Hermeus Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Commercial 2

Pricing, plans, and the legal terms of use

PrivacyPolicy
PrivacyPolicy
 TermsOfService
TermsOfService

Company 4

The organization behind the API

Website
Website
 About
About
 Blog
Blog
 Careers
Careers

Source (apis.yml)

apis.yml Raw ↑ 
aid: hermeus
name: Hermeus
description: 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.
url: https://raw.githubusercontent.com/api-evangelist/hermeus/refs/heads/main/apis.yml
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: http://static1.squarespace.com/static/6068d7e274bb870d758315f9/t/68c1afa28c435b345f811d5e/1757523874690/_A6A8512.jpg?format=1500w
x-type: company
x-source: vc-portfolio
x-backed-by:
- canaan-partners
- khosla-ventures
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Aerospace
- Defense
- Hypersonic
- Aviation
- Manufacturing
- Hardware
- National Security
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/hermeus-domain-security.yml
- type: Website
  url: https://www.hermeus.com/
- type: About
  url: https://www.hermeus.com/about
- type: Blog
  url: https://www.hermeus.com/newsroom
- type: Careers
  url: https://www.hermeus.com/careers
- type: PrivacyPolicy
  url: https://www.hermeus.com/hermeus-privacy-policy
- type: TermsOfService
  url: https://www.hermeus.com/hermeus-general-purchasing-terms-1
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence