# Whisper Aero

**Canonical:** https://apis.io/providers/whisper-aero/  
**Website:** https://www.whisper.aero/  
**APIs profiled:** 0

Whisper Aero is a Crossville, Tennessee based aerospace company developing ultra-quiet electric ducted-fan propulsion that converts electricity into thrust with roughly 20 percent more efficiency and 20 dB less noise than conventional systems, scaling from 5 to 500 pounds of thrust and 40 to 400 knots for aviation, defense, and commercial applications. Backed by Kindred Ventures, Lux Capital, and Menlo Ventures. The company is a hardware manufacturer and, as of this enrichment pass, publishes no public developer API, portal, or documentation surface.

## Kin Score — 9.7 / 100 (minimal)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 9.7).

| 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 | 21.1 |
| Access Clarity | 21.1 |

## 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)

- **Whisper Aero Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Company, Mobility Logistics, Aerospace, Electric Propulsion, Aviation, Defense, Manufacturing, Cleantech

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