Ultrahuman

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.

Ultrahuman publishes 3 APIs on the APIs.io network: Metrics API, OAuth API, and User API. Tagged areas include Wearables, Smart Ring, Health, Metabolic Health, and Sleep.

Ultrahuman’s developer surface includes authentication, documentation, signup flow, and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub
40.8/100 thin ▬ flat Agent 31/100 agent aware Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1
AccessFreemiumSelf serve⚡ Free to try
4 APIs
WearablesSmart RingHealthMetabolic HealthSleepHRVRecoveryCGMGlucoseDigital Health

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 40.8/100 · thin
Contract Quality 15.4 / 25
Developer Ergonomics 3.9 / 20
Commercial Clarity 12.1 / 20
Operational Transparency 4.1 / 13
Governance 0.0 / 12
Discoverability 7.4 / 10
Agent readiness — 31/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
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/ultrahuman: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 4

Individual APIs this provider publishes, each with its own machine-readable definition.

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.

Pricing Plans 1

Published pricing tiers and plan structures.

Ultrahuman Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Ultrahuman Rate Limits

4 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Ultrahuman Finops

FINOPS

Security Posture 4

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

Ultrahuman Authentication

http · 1 scheme

SECURITY

Ultrahuman Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Ultrahuman Vulnerability Disclosure

security.txt · contact published

SECURITY

Ultrahuman Trust Center

ISO 27001, HIPAA, GDPR

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Ultrahuman Agentic Access

5 operations · 2 acting · 1 human-in-the-loop

5 operations · 2 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

SignUp
SignUp

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Access & Security 4

Authentication, authorization, and security posture

TrustCenter
TrustCenter
 VulnerabilityDisclosure
VulnerabilityDisclosure
 DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits
RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans
Plans
 FinOps
FinOps

Company 2

The organization behind the API

Website
Website
 LinkedIn
LinkedIn

Source (apis.yml)

apis.yml Raw ↑ 
aid: ultrahuman
url: https://raw.githubusercontent.com/api-evangelist/ultrahuman/refs/heads/main/apis.yml
name: Ultrahuman
kind: company
description: 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.
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/ultrahuman.png
tags:
- Wearables
- Smart Ring
- Health
- Metabolic Health
- Sleep
- HRV
- Recovery
- CGM
- Glucose
- Digital Health
created: '2026-07-03'
modified: '2026-07-03'
specificationVersion: '0.19'
apis:
- aid: ultrahuman:ultrahuman-ultrasignal-api
  name: UltraSignal Sensor Platform API
  tags:
  - UltraSignal
  - Sensors
  - PPG
  - Accelerometer
  - Developer Platform
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.ultrahuman.com/ultrasignal/
  baseURL: https://partner.ultrahuman.com
  properties:
  - url: https://www.ultrahuman.com/ultrasignal/
    type: Documentation
  description: UltraSignal is Ultrahuman's wearable developer platform for building custom algorithms on raw Ring AIR sensor
    streams - photoplethysmography (PPG), temperature, and accelerometer data. Access is application-gated with a loaned developer
    kit; priority goes to apps that leverage the ring's sensors. No public endpoint contract is documented, so this API is
    listed for discovery without modeled endpoints.
- aid: ultrahuman:ultrahuman-metrics-api
  name: Ultrahuman Metrics API
  description: Ring and CGM daily metrics for consented users.
  humanURL: https://vision.ultrahuman.com/developer-docs
  baseURL: https://partner.ultrahuman.com
  tags:
  - Metrics
  properties:
  - type: OpenAPI
    url: openapi/ultrahuman-metrics-api-openapi.yml
  - type: Documentation
    url: https://vision.ultrahuman.com/developer-docs
  - type: APIReference
    url: https://www.ultrahuman.com/blog/accessing-the-ultrahuman-partnership-api/
  - type: PostmanCollection
    url: collections/ultrahuman.postman_collection.json
  - type: Documentation
    url: https://vision.ultrahuman.com/developer-docs?type=oauth
- aid: ultrahuman:ultrahuman-oauth-api
  name: Ultrahuman OAuth API
  description: OAuth 2.0 authorization, token exchange, and revocation.
  humanURL: https://vision.ultrahuman.com/developer-docs
  baseURL: https://partner.ultrahuman.com
  tags:
  - OAuth
  properties:
  - type: OpenAPI
    url: openapi/ultrahuman-oauth-api-openapi.yml
  - type: Documentation
    url: https://vision.ultrahuman.com/developer-docs
  - type: APIReference
    url: https://www.ultrahuman.com/blog/accessing-the-ultrahuman-partnership-api/
  - type: PostmanCollection
    url: collections/ultrahuman.postman_collection.json
  - type: Documentation
    url: https://vision.ultrahuman.com/developer-docs?type=oauth
- aid: ultrahuman:ultrahuman-user-api
  name: Ultrahuman User API
  description: Basic authorized-user profile information.
  humanURL: https://vision.ultrahuman.com/developer-docs
  baseURL: https://partner.ultrahuman.com
  tags:
  - User
  properties:
  - type: OpenAPI
    url: openapi/ultrahuman-user-api-openapi.yml
  - type: Documentation
    url: https://vision.ultrahuman.com/developer-docs
  - type: APIReference
    url: https://www.ultrahuman.com/blog/accessing-the-ultrahuman-partnership-api/
  - type: PostmanCollection
    url: collections/ultrahuman.postman_collection.json
  - type: Documentation
    url: https://vision.ultrahuman.com/developer-docs?type=oauth
common:
- type: AgenticAccess
  url: agentic-access/ultrahuman-agentic-access.yml
- type: TrustCenter
  url: security/ultrahuman-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/ultrahuman-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/ultrahuman-domain-security.yml
- type: Authentication
  url: authentication/ultrahuman-authentication.yml
- type: Website
  url: https://www.ultrahuman.com
- type: LinkedIn
  url: https://www.linkedin.com/company/ultrahuman
- type: Documentation
  url: https://vision.ultrahuman.com/developer-docs
- type: SignUp
  url: https://partnerships.ultrahuman.com/
- type: Plans
  url: plans/ultrahuman-plans-pricing.yml
- type: RateLimits
  url: rate-limits/ultrahuman-rate-limits.yml
- type: FinOps
  url: finops/ultrahuman-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com