Hidden Level website screenshot

Hidden Level

Hidden Level is a U.S.-based defense and aerospace technology company that turns radio-frequency (RF) activity into trusted airspace intelligence. Its passive RF sensing platform detects and tracks unmanned aerial systems (drones) and other activity across air, ground, sea, and space domains without requiring emitters or heavy on-site infrastructure. Hidden Level packages this as hardware sensor platforms, software platforms, and data platforms serving defense and military, critical infrastructure protection, homeland security, and public safety customers. The company hosts its platform on AWS with least-privilege access, MFA, and TLS 1.3 API communications, aligns corporate controls to NIST SP 800-171, and emphasizes U.S. design and manufacturing. Backed by Costanoa Ventures. This API Evangelist profile tracks Hidden Level's public web and security surface; the company does not currently publish a public developer portal, API reference, or SDKs.

Hidden Level is profiled on the APIs.io network. Tagged areas include Company, Defense, Aerospace, Airspace Awareness, and Counter-UAS.

Hidden Level’s developer surface includes support, engineering blog, and 7 more developer resources.

🌐 Visit website 📡 Source on GitHub
13.3/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5
0 APIs
CompanyDefenseAerospaceAirspace AwarenessCounter-UASDrone DetectionRF SensingCritical InfrastructurePublic SafetySecurity

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 13.3/100 · minimal
Contract Quality 0.0 / 25
Developer Ergonomics 1.3 / 20
Commercial Clarity 5.3 / 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/hidden-level: 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 2

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

Hidden Level Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Hidden Level Trust Center

FIPS 140, FIPS 186-5, NIST SP 800-171, TLS 1.3

SECURITY

Resources

Access & Security 4

Authentication, authorization, and security posture

TrustCenter
TrustCenter
 Compliance
Compliance
 DomainSecurity
DomainSecurity
 TrustCenter
TrustCenter

Operate 1

Status, limits, changes, and where to get help

Support
Support

Commercial 1

Pricing, plans, and the legal terms of use

PrivacyPolicy
PrivacyPolicy

Company 3

The organization behind the API

Website
Website
 About
About
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: hidden-level
name: Hidden Level
description: Hidden Level is a U.S.-based defense and aerospace technology company that turns radio-frequency (RF) activity
  into trusted airspace intelligence. Its passive RF sensing platform detects and tracks unmanned aerial systems (drones)
  and other activity across air, ground, sea, and space domains without requiring emitters or heavy on-site infrastructure.
  Hidden Level packages this as hardware sensor platforms, software platforms, and data platforms serving defense and military,
  critical infrastructure protection, homeland security, and public safety customers. The company hosts its platform on AWS
  with least-privilege access, MFA, and TLS 1.3 API communications, aligns corporate controls to NIST SP 800-171, and emphasizes
  U.S. design and manufacturing. Backed by Costanoa Ventures. This API Evangelist profile tracks Hidden Level's public web
  and security surface; the company does not currently publish a public developer portal, API reference, or SDKs.
url: https://raw.githubusercontent.com/api-evangelist/hidden-level/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- costanoa-ventures
x-tier: stub
x-tier-reason: portfolio-lead
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
image: https://cdn.prod.website-files.com/66fb792788c588b422dd6257/672d06af98766a4adb275d2c_Hidden-Level-Home.png
tags:
- Company
- Defense
- Aerospace
- Airspace Awareness
- Counter-UAS
- Drone Detection
- RF Sensing
- Critical Infrastructure
- Public Safety
- Security
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://hiddenlevel.com
- type: About
  url: https://hiddenlevel.com/about
- type: Support
  url: https://hiddenlevel.com/contact-us
- type: Blog
  url: https://hiddenlevel.com/thought-leadership
- type: PrivacyPolicy
  url: https://hiddenlevel.com/privacy-policy
- type: TrustCenter
  url: https://hiddenlevel.com/security-trust
- type: Compliance
  url: https://hiddenlevel.com/security-trust
- type: DomainSecurity
  url: security/hidden-level-domain-security.yml
- type: TrustCenter
  url: security/hidden-level-trust-center.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence