Sonde Health

Sonde Health is a Boston-based digital health company that turns short voice samples into vocal biomarkers — objective, AI-derived measures of respiratory, mental and cognitive fitness. Founded out of PureTech Health, Sonde has banked over 1,000,000 voice samples from more than 80,000 subjects to train its Health Check models. Partners integrate through the Sonde Platform Service API (a HIPAA-aligned REST API on api.sondeservices.com secured with OAuth 2.0 client-credentials and fine-grained sonde-platform/* scopes), through on-device Passive, Cued and Edge SDKs for Android and iOS, and through OEM integrations such as Qualcomm's Snapdragon Sound platform. The cloud flow is upload-and-score: register a subject, request a signed storage URL, upload a WAV sample, then create an inference job and poll for Respiratory Symptoms Risk, Mental Fitness voice-feature scores, M3/PHQ-2 questionnaire scores, or an English transcription.

Sonde Health publishes 1 API on the APIs.io network: Sonde Screening API. Tagged areas include Company, Health, Healthcare, Digital Health, and Vocal Biomarkers.

Sonde Health’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, developer portal, authentication, and 25 more developer resources.

🌐 Visit website 📡 Source on GitHub

51.2/100 developing ▬ flat Agent 33/100 agent ready saas Full breakdown ↓
scored 2026-09-01 · rubric v0.17.2

1 APIs

Company Health Healthcare Digital HealthVocal BiomarkersVoice Audio Machine-Learning Artificial Intelligence Mental Health Respiratory Remote Patient Monitoring Wellness HIPAA

Kin Score

Kin Score How this is scored →
scored 2026-09-01 · rubric v0.17.2

Composite quality — 51.2/100 · developing

Contract Quality 8.2 / 21

Developer Ergonomics 13.4 / 17

Access Clarity 7.2 / 17

Operational Transparency 2.9 / 11

Contract Governance 0.0 / 10

Discoverability 5.8 / 9

Regulatory Posture 9.9 / 15

Agent readiness — 33/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 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/sonde-health: 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 2

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

Rate Limits 1

Documented rate limits and quota policies.

Scopes 1

OAuth scopes governing access to this provider's APIs.

Sonde Health Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Resources

Get Started 5

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Login

Portal

Portal

Sandbox

Sandbox

Documentation 3

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

OpenAPI

OpenAPI

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgentSkill

AgentSkill

LLMsTxt

LLMsTxt

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

ErrorCatalog

Conventions

Lifecycle

Conformance

DataModel

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

SDKs

SDKs

Access & Security 4

Authentication, authorization, and security posture

Authentication

OAuthScopes

Compliance

DomainSecurity

Operate 4

Status, limits, changes, and where to get help

Support

Deprecation

ChangeLog

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Plans

Plans

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: sonde-health
name: Sonde Health
description: 'Sonde Health is a Boston-based digital health company that turns short voice samples into vocal biomarkers —
  objective, AI-derived measures of respiratory, mental and cognitive fitness. Founded out of PureTech Health, Sonde has banked
  over 1,000,000 voice samples from more than 80,000 subjects to train its Health Check models. Partners integrate through
  the Sonde Platform Service API (a HIPAA-aligned REST API on api.sondeservices.com secured with OAuth 2.0 client-credentials
  and fine-grained sonde-platform/* scopes), through on-device Passive, Cued and Edge SDKs for Android and iOS, and through
  OEM integrations such as Qualcomm''s Snapdragon Sound platform. The cloud flow is upload-and-score: register a subject,
  request a signed storage URL, upload a WAV sample, then create an inference job and poll for Respiratory Symptoms Risk,
  Mental Fitness voice-feature scores, M3/PHQ-2 questionnaire scores, or an English transcription.'
url: https://raw.githubusercontent.com/api-evangelist/sonde-health/refs/heads/main/apis.yml
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
image: http://static1.squarespace.com/static/5daafd349a9f9f7b4aa8680f/t/5df3f83d91da223324d2f090/1587518087705/Sonde_Logo+horizontal+PMS3025.png?format=1500w
x-type: company
x-source: harvest:secondary-market
specificationVersion: '0.20'
created: '2026-08-28'
modified: '2026-08-28'
tags:
- Company
- Health
- Healthcare
- Digital Health
- Vocal Biomarkers
- Voice
- Audio
- Machine-Learning
- Artificial Intelligence
- Mental Health
- Respiratory
- Remote Patient Monitoring
- Wellness
- HIPAA
tags_raw:
- Company
- Health
- Healthcare
- Digital Health
- Vocal Biomarkers
- Voice
- Audio
- Machine Learning
- Artificial Intelligence
- Mental Health
- Respiratory
- Remote Patient Monitoring
- Wellness
- HIPAA
apis:
- name: Sonde Platform Service API
  description: The Sonde Platform Service API lets partners run Sonde Vocal Biomarker Health Checks from their own mobile,
    web and embedded applications. Services cover user registration (UserService), signed-URL audio upload (StorageService),
    measure lookup (MeasureService), synchronous and asynchronous inference (InferenceService), speech-to-text (TranscriptionService)
    and questionnaire delivery/scoring (QuestionnaireManager). Authentication is OAuth 2.0 client-credentials against an Amazon
    Cognito user pool.
  humanURL: https://sondehealth.atlassian.net/wiki/spaces/SA/pages/2707062806/Sonde+API+Platform+Introduction
  baseURL: https://api.sondeservices.com
  tags:
  - Vocal Biomarkers
  - Health Check
  - Inference
  - Transcription
  - Questionnaire
  properties:
  - type: Documentation
    url: https://sondehealth.atlassian.net/wiki/spaces/SA/overview
  - type: APIReference
    url: https://sondehealth.atlassian.net/wiki/spaces/SA/pages/2689105939/REST+API+Reference
  - type: GettingStarted
    url: https://sondehealth.atlassian.net/wiki/spaces/SA/pages/2800156688/Getting+Started%3A+Sonde+Cloud+API
  - type: Authentication
    url: authentication/sonde-health-authentication.yml
  - type: OAuthScopes
    url: scopes/sonde-health-scopes.yml
  - type: ChangeLog
    url: changelog/sonde-health-changelog.yml
- name: Sonde Screening API
  description: 'The Sonde Screening API (Sonde Product Partner API) exposes partner screening-session outcomes: an OAuth 2.0
    client-credentials token endpoint and a paged, filterable screening-results report listing each session token, subject,
    PASS/FAIL outcome and calculation timestamp.'
  humanURL: https://sondehealth.atlassian.net/wiki/spaces/SPPA/pages/1614250108/REST+API+Reference
  baseURL: https://api.sondeservices.com
  tags:
  - Screening
  - Reporting
  - Authentication
  properties:
  - type: OpenAPI
    url: openapi/sonde-health-screening-api-openapi.yaml
  - type: Overlay
    url: overlays/sonde-health-screening-api-overlay.yaml
  - type: APIReference
    url: https://sondehealth.atlassian.net/wiki/spaces/SPPA/pages/1614250108/REST+API+Reference
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.sondehealth.com/
- type: DeveloperPortal
  url: https://www.sondehealth.com/dev-documentation
- type: Documentation
  url: https://sondehealth.atlassian.net/wiki/spaces/SA/overview
- type: APIReference
  url: https://sondehealth.atlassian.net/wiki/spaces/SA/pages/2689105939/REST+API+Reference
- type: GettingStarted
  url: https://sondehealth.atlassian.net/wiki/spaces/SA/pages/2800156688/Getting+Started%3A+Sonde+Cloud+API
- type: Support
  url: https://www.sondehealth.com/support
- type: Blog
  url: https://www.sondehealth.com/news-blog
- type: GitHubOrganization
  url: https://github.com/sondehealth-samples
- type: Login
  url: https://us.sondeservices.com/
- type: Portal
  url: https://us.sondeservices.com/
- type: TermsOfService
  url: https://www.sondehealth.com/terms-of-service
- type: PrivacyPolicy
  url: https://www.sondehealth.com/privacy
- type: OpenAPI
  url: openapi/sonde-health-screening-api-openapi.yaml
- type: Overlay
  url: overlays/sonde-health-screening-api-overlay.yaml
- type: Authentication
  url: authentication/sonde-health-authentication.yml
- type: OAuthScopes
  url: scopes/sonde-health-scopes.yml
- type: ErrorCatalog
  url: errors/sonde-health-problem-types.yml
- type: Conventions
  url: conventions/sonde-health-conventions.yml
- type: Lifecycle
  url: lifecycle/sonde-health-lifecycle.yml
- type: Deprecation
  url: lifecycle/sonde-health-lifecycle.yml
- type: ChangeLog
  url: changelog/sonde-health-changelog.yml
- type: Packages
  url: packages/sonde-health-packages.yml
- type: SDKs
  url: packages/sonde-health-packages.yml
- type: Sandbox
  url: sandbox/sonde-health-sandbox.yml
- type: Conformance
  url: conformance/sonde-health-conformance.yml
- type: Compliance
  url: conformance/sonde-health-conformance.yml
- type: DataModel
  url: data-model/sonde-health-data-model.yml
- type: DomainSecurity
  url: security/sonde-health-domain-security.yml
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/sonde-health-llms.txt
- type: Plans
  url: plans/sonde-health-plans-pricing.yml
- type: RateLimits
  url: rate-limits/sonde-health-rate-limits.yml
x-enrichment:
  date: '2026-08-28'
  status: enriched
  artifacts_added: 23
  pass: local-v1

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