AcoustID

AcoustID is an open-source audio fingerprinting service providing a REST API for identifying music tracks by audio fingerprint and linking results to MusicBrainz metadata records. Built on the Chromaprint library, it offers a crowdsourced fingerprint database free for non-commercial use, with commercial plans available through AcoustID OÜ.

AcoustID publishes 1 API on the APIs.io network. Tagged areas include Audio, Fingerprinting, Music, MusicBrainz, and Open-Source.

AcoustID’s developer surface includes documentation, engineering blog, pricing, and 7 more developer resources.

🌐 Visit website 📡 Source on GitHub

22.6/100 emerging ▬ flat Agent 3/100 human only saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemium

1 APIs

Audio Fingerprinting MusicMusicBrainzOpen-Source Identification

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 22.6/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 2.4 / 20

Access Clarity 10.0 / 20

Operational Transparency 3.4 / 13

Contract Governance 0.0 / 12

Discoverability 6.9 / 10

Agent readiness — 3/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 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 Well-Known Document 0 / 5

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

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APIs 1

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

AcoustID Web Service API

REST API for audio fingerprint lookup and submission. Accepts Chromaprint-generated fingerprints and returns AcoustID track identifiers along with linked MusicBrainz metadata in...

Pricing Plans 1

Published pricing tiers and plan structures.

Acoustid Plans Pricing

5 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Acoustid Rate Limits

2 limits

RATE LIMITS

FinOps 1

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

Acoustid Finops

FINOPS

Security Posture 1

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

Acoustid Domain Security

TLSv1.3 · HSTS

SECURITY

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrg

GitHubOrg

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

FinOps

FinOps

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

aid: acoustid
name: AcoustID
description: AcoustID is an open-source audio fingerprinting service providing a REST API for identifying music tracks by
  audio fingerprint and linking results to MusicBrainz metadata records. Built on the Chromaprint library, it offers a crowdsourced
  fingerprint database free for non-commercial use, with commercial plans available through AcoustID OÜ.
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
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/acoustid.png
url: https://raw.githubusercontent.com/api-evangelist/acoustid/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.23'
tags:
- Audio
- Fingerprinting
- Music
- MusicBrainz
- Open-Source
- Identification
tags_raw:
- Audio
- Fingerprinting
- Music
- MusicBrainz
- Open Source
- Identification
apis:
- aid: acoustid:acoustid-api
  name: AcoustID Web Service API
  description: REST API for audio fingerprint lookup and submission. Accepts Chromaprint-generated fingerprints and returns
    AcoustID track identifiers along with linked MusicBrainz metadata including recordings, artists, and releases.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://acoustid.org/webservice
  baseURL: https://api.acoustid.org/v2
  tags:
  - Audio
  - Fingerprinting
  - Music
  - Lookup
  - Submission
  properties:
  - type: Documentation
    url: https://acoustid.org/webservice
common:
- type: DomainSecurity
  url: security/acoustid-domain-security.yml
- type: Website
  url: https://acoustid.org/
- type: Documentation
  url: https://acoustid.org/webservice
- type: GitHubOrg
  url: https://github.com/acoustid
- type: Blog
  url: https://blog.acoustid.org/
- type: Pricing
  url: https://acoustid.biz/
- type: X
  url: https://twitter.com/acoustid
- type: Plans
  url: plans/acoustid-plans-pricing.yml
- type: RateLimits
  url: rate-limits/acoustid-rate-limits.yml
- type: FinOps
  url: finops/acoustid-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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