SoundStat

SoundStat is an independent audio analysis API that returns detailed per-track features - tempo (BPM), key, mode, energy, danceability, valence, instrumentalness, acousticness, loudness, plus segment and beat structure - for music tracks referenced by Spotify track ID. Launched in early 2025 as an alternative after Spotify deprecated its public audio-features and recommendations endpoints, SoundStat has analyzed several million tracks and layers a rich recommendation engine (similar, feature-target, mixed-seed, mood, activity, time-of-day, cross-genre, DJ-compatible, contrast, hidden-gems, and more) plus genre-and-feature search on top of its analysis corpus. The REST API is authenticated with an x-api-key header and billed per unique track analyzed.

SoundStat publishes 5 APIs on the APIs.io network, including Genres API, Recommendations API, Stats API, and 2 more. Tagged areas include Music, Audio Analysis, Audio Features, Recommendations, and Track Analysis.

SoundStat’s developer surface includes authentication, documentation, signup flow, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub

42.6/100 developing ▬ flat Agent 26/100 agent aware saas Full breakdown ↓
scored 2026-09-14 · rubric v0.22.0

AccessFreemiumSelf serve⚡ Free to try

1 APIs

Music Audio Analysis Audio Features RecommendationsTrack AnalysisSpotify Alternative

Kin Score

Kin Score How this is scored →
scored 2026-09-14 · rubric v0.22.0

Composite quality — 42.6/100 · developing

Contract Quality 12.3 / 23

Developer Ergonomics 5.4 / 18

Access Clarity 11.4 / 18

Operational Transparency 3.7 / 12

Contract Governance 0.0 / 11

Discoverability 6.2 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 26/100 · 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 8 / 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 Well-Known Document 0 / 5

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/soundstat: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 5

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

SoundStat Genres API

The Genres API from SoundStat — 1 operation(s) for genres.

SoundStat Recommendations API

The Recommendations API from SoundStat — 15 operation(s) for recommendations.

SoundStat Stats API

The Stats API from SoundStat — 1 operation(s) for stats.

SoundStat Track API

The Track API from SoundStat — 2 operation(s) for track.

SoundStat Tracks API

The Tracks API from SoundStat — 1 operation(s) for tracks.

Open Collections 7

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

SoundStat Genres API

OPEN COLLECTION

SoundStat Genres Recommendations API

OPEN COLLECTION

SoundStat Genres Stats API

OPEN COLLECTION

SoundStat Genres Track API

OPEN COLLECTION

SoundStat Genres Tracks API

OPEN COLLECTION

SoundStat API

OPEN COLLECTION

Scroll for all 7

Pricing Plans 1

Published pricing tiers and plan structures.

Soundstat Plans Pricing

5 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Soundstat Rate Limits

3 limits

RATE LIMITS

FinOps 1

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

Soundstat Finops

FINOPS

Security Posture 2

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

Soundstat Authentication

apiKey · 1 scheme

SECURITY

Soundstat Domain Security

TLSv1.3 · DMARC

SECURITY

Agentic Access 1

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

Soundstat Agentic Access

20 operations · 15 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 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

Plans

Plans

FinOps

FinOps

Company 1

The organization behind the API

Website

Website

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

aid: soundstat
url: https://raw.githubusercontent.com/api-evangelist/soundstat/refs/heads/main/apis.yml
name: SoundStat
kind: company
description: SoundStat is an independent audio analysis API that returns detailed per-track features - tempo (BPM), key, mode,
  energy, danceability, valence, instrumentalness, acousticness, loudness, plus segment and beat structure - for music tracks
  referenced by Spotify track ID. Launched in early 2025 as an alternative after Spotify deprecated its public audio-features
  and recommendations endpoints, SoundStat has analyzed several million tracks and layers a rich recommendation engine (similar,
  feature-target, mixed-seed, mood, activity, time-of-day, cross-genre, DJ-compatible, contrast, hidden-gems, and more) plus
  genre-and-feature search on top of its analysis corpus. The REST API is authenticated with an x-api-key header and billed
  per unique track analyzed.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/soundstat.png
tags:
- Music
- Audio Analysis
- Audio Features
- Recommendations
- Track Analysis
- Spotify Alternative
created: '2026-07-03'
modified: '2026-07-03'
specificationVersion: '0.23'
apis:
- aid: soundstat:soundstat-genres-api
  name: SoundStat Genres API
  description: The Genres API from SoundStat — 1 operation(s) for genres.
  humanURL: https://soundstat.info/api/v1/docs
  baseURL: https://soundstat.info/api/v1
  tags:
  - Genres
  properties:
  - type: OpenAPI
    url: openapi/soundstat-genres-api-openapi.yml
  - type: Documentation
    url: https://soundstat.info/api/v1/docs
  - type: APIReference
    url: https://soundstat.info/api/v1/docs
  - type: PostmanCollection
    url: collections/soundstat.postman_collection.json
  - type: OpenCollection
    url: collections/soundstat.opencollection.json
  - type: Documentation
    url: https://soundstat.info/article/New-Horizons-in-Music-Recommendations.html
- aid: soundstat:soundstat-recommendations-api
  name: SoundStat Recommendations API
  description: The Recommendations API from SoundStat — 15 operation(s) for recommendations.
  humanURL: https://soundstat.info/api/v1/docs
  baseURL: https://soundstat.info/api/v1
  tags:
  - Recommendations
  properties:
  - type: OpenAPI
    url: openapi/soundstat-recommendations-api-openapi.yml
  - type: Documentation
    url: https://soundstat.info/api/v1/docs
  - type: APIReference
    url: https://soundstat.info/api/v1/docs
  - type: PostmanCollection
    url: collections/soundstat.postman_collection.json
  - type: OpenCollection
    url: collections/soundstat.opencollection.json
  - type: Documentation
    url: https://soundstat.info/article/New-Horizons-in-Music-Recommendations.html
- aid: soundstat:soundstat-stats-api
  name: SoundStat Stats API
  description: The Stats API from SoundStat — 1 operation(s) for stats.
  humanURL: https://soundstat.info/api/v1/docs
  baseURL: https://soundstat.info/api/v1
  tags:
  - Stats
  properties:
  - type: OpenAPI
    url: openapi/soundstat-stats-api-openapi.yml
  - type: Documentation
    url: https://soundstat.info/api/v1/docs
  - type: APIReference
    url: https://soundstat.info/api/v1/docs
  - type: PostmanCollection
    url: collections/soundstat.postman_collection.json
  - type: OpenCollection
    url: collections/soundstat.opencollection.json
  - type: Documentation
    url: https://soundstat.info/article/New-Horizons-in-Music-Recommendations.html
- aid: soundstat:soundstat-track-api
  name: SoundStat Track API
  description: The Track API from SoundStat — 2 operation(s) for track.
  humanURL: https://soundstat.info/api/v1/docs
  baseURL: https://soundstat.info/api/v1
  tags:
  - Track
  properties:
  - type: OpenAPI
    url: openapi/soundstat-track-api-openapi.yml
  - type: Documentation
    url: https://soundstat.info/api/v1/docs
  - type: APIReference
    url: https://soundstat.info/api/v1/docs
  - type: PostmanCollection
    url: collections/soundstat.postman_collection.json
  - type: OpenCollection
    url: collections/soundstat.opencollection.json
  - type: Documentation
    url: https://soundstat.info/article/New-Horizons-in-Music-Recommendations.html
- aid: soundstat:soundstat-tracks-api
  name: SoundStat Tracks API
  description: The Tracks API from SoundStat — 1 operation(s) for tracks.
  humanURL: https://soundstat.info/api/v1/docs
  baseURL: https://soundstat.info/api/v1
  tags:
  - Tracks
  properties:
  - type: OpenAPI
    url: openapi/soundstat-tracks-api-openapi.yml
  - type: Documentation
    url: https://soundstat.info/api/v1/docs
  - type: APIReference
    url: https://soundstat.info/api/v1/docs
  - type: PostmanCollection
    url: collections/soundstat.postman_collection.json
  - type: OpenCollection
    url: collections/soundstat.opencollection.json
  - type: Documentation
    url: https://soundstat.info/article/New-Horizons-in-Music-Recommendations.html
common:
- type: CapabilityMap
  url: capabilities/soundstat-capability-edges.yml
  name: SoundStat Business Capability Map
- type: AgenticAccess
  url: agentic-access/soundstat-agentic-access.yml
- type: DomainSecurity
  url: security/soundstat-domain-security.yml
- type: Authentication
  url: authentication/soundstat-authentication.yml
- type: Website
  url: https://soundstat.info
- type: Documentation
  url: https://soundstat.info/api/v1/docs
- type: SignUp
  url: https://soundstat.info/auth.html
- type: TermsOfService
  url: https://soundstat.info/terms.html
- type: Plans
  url: plans/soundstat-plans-pricing.yml
- type: RateLimits
  url: rate-limits/soundstat-rate-limits.yml
- type: FinOps
  url: finops/soundstat-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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