# Ultrahuman

**Canonical:** https://apis.io/providers/ultrahuman/  
**Website:** https://www.ultrahuman.com  
**APIs profiled:** 4

Ultrahuman makes the Ring AIR and Ring Pro smart rings and the M1 continuous glucose monitor (CGM), a subscription-free metabolic-health wearable ecosystem. Its Partner (UltraSignal) API lets approved partners read user-consented health metrics - sleep, HRV, resting heart rate, skin temperature, SpO2, movement/recovery indexes, VO2 max, and (with the M1 patch) continuous glucose - over an OAuth 2.0-secured REST API. A separate UltraSignal developer program offers raw sensor streams (PPG, temperature, accelerometer) from the Ring AIR via a loaned developer kit. API access is not self-serve - partners apply and are onboarded with client credentials; end users authorize data sharing from the Ultrahuman app.

## Kin Score — 41.6 / 100 (developing)

Scored 2026-08-25 under rubric 0.14.0. Trend: flat (+0.0 from 41.6).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 54.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 31.6 |
| Developer Ergonomics | 21.4 |
| Commercial Clarity | 53.9 |
| Access Clarity | 53.9 |

Regulatory layer — **Health**: 28.7 (matched via tags).

## Agent readiness — 19.8 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | bearer |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

Freemium · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: no (confidence: high).

## APIs (4)

- **UltraSignal Sensor Platform API** — UltraSignal is Ultrahuman's wearable developer platform for building custom algorithms on raw Ring AIR sensor streams - photoplethysmography (PPG), temperature, and acceleromete...
- **Ultrahuman Metrics API** — Ring and CGM daily metrics for consented users.
- **Ultrahuman OAuth API** — OAuth 2.0 authorization, token exchange, and revocation.
- **Ultrahuman User API** — Basic authorized-user profile information.

## Agentic access (1)

- **Ultrahuman Agentic Access** — 5 operations · 2 acting · 1 human-in-the-loop

## Security (4)

- **Ultrahuman Authentication** — http · 1 scheme
- **Ultrahuman Domain Security** — TLSv1.3 · HSTS · DMARC
- **Ultrahuman Vulnerability Disclosure** — security.txt · contact published
- **Ultrahuman Trust Center** — ISO 27001, HIPAA, GDPR

## Plans (1)

- **Ultrahuman Plans Pricing**

## Tags

Wearables, Smart Ring, Health, Metabolic Health, Sleep, HRV, Recovery, CGM, Glucose, Digital Health

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