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

41.6/100 developing ▬ flat Agent 20/100 agent aware Full breakdown ↓
scored 2026-08-25 · rubric v0.14.0

AccessFreemiumSelf serve⚡ Free to try

4 APIs

Wearables Smart Ring Health Metabolic Health SleepHRVRecovery CGMGlucoseDigital Health

Kin Score

Kin Score How this is scored →
scored 2026-08-25 · rubric v0.14.0

Composite quality — 41.6/100 · developing

Contract Quality 11.5 / 21

Developer Ergonomics 3.6 / 17

Access Clarity 9.2 / 17

Operational Transparency 3.5 / 11

Contract Governance 0.0 / 10

Discoverability 6.3 / 9

Regulatory Posture 4.3 / 15

Agent readiness — 20/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Surface 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Health regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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.

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.

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

Source (apis.yml)

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: '0.23'
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:
  - Authentication
  tags_raw:
  - 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

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Ultrahuman

Kin Score

APIs 4

UltraSignal Sensor Platform API

Ultrahuman Metrics API

Ultrahuman OAuth API

Ultrahuman User API

Open Collections 4

API Collection

Ultrahuman Partner (UltraSignal) Metrics API

Ultrahuman Partner (UltraSignal) Metrics OAuth API

Ultrahuman Partner (UltraSignal) Metrics User API

Pricing Plans 1

Ultrahuman Plans Pricing

Rate Limits 1

Ultrahuman Rate Limits

FinOps 1

Ultrahuman Finops

Security Posture 4

Ultrahuman Authentication

Ultrahuman Domain Security

Ultrahuman Vulnerability Disclosure

Ultrahuman Trust Center

Agentic Access 1

Ultrahuman Agentic Access