Harmonix

Harmonix Music Systems is one of the world's leading independent game development studios, best known for creating blockbuster music and rhythm franchises including Rock Band and Dance Central, alongside titles such as Amplitude, Fuser, DropMix, Audica, Super Beat Sports, and Harmonix Music VR. Founded in 1995 and based in Cambridge, Massachusetts, the studio was acquired by Epic Games in 2021 and continues to invent the future of music and motion gaming. Harmonix operates a consumer-facing web presence (games, music, community, blog, and press) and publishes no public developer API, SDK, or documentation surface at this time.

Harmonix is profiled on the APIs.io network. Tagged areas include Company, Gaming, Music Games, Rhythm Games, and Video Games.

Harmonix’s developer surface includes engineering blog and 5 more developer resources.

🌐 Visit website 📡 Source on GitHub

9.7/100 minimal ▬ flat Agent 0/100 human only saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

0 APIs

Company GamingMusic GamesRhythm GamesVideo Games Game Development Entertainment

Kin Score

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

Composite quality — 9.7/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 0.5 / 20

Access Clarity 4.2 / 20

Operational Transparency 0.0 / 13

Contract Governance 0.0 / 12

Discoverability 5.0 / 10

Agent readiness — 0/100 · 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 0 / 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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Security Posture 1

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

Harmonix Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

ParentCompany

ParentCompany

Source (apis.yml)

aid: harmonix
name: Harmonix
description: Harmonix Music Systems is one of the world's leading independent game development studios, best known for creating
  blockbuster music and rhythm franchises including Rock Band and Dance Central, alongside titles such as Amplitude, Fuser,
  DropMix, Audica, Super Beat Sports, and Harmonix Music VR. Founded in 1995 and based in Cambridge, Massachusetts, the studio
  was acquired by Epic Games in 2021 and continues to invent the future of music and motion gaming. Harmonix operates a consumer-facing
  web presence (games, music, community, blog, and press) and publishes no public developer API, SDK, or documentation surface
  at this time.
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: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://www.harmonixmusic.com/static/img/hmx-ball.png
url: https://raw.githubusercontent.com/api-evangelist/harmonix/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- foundry-group
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Gaming
- Music Games
- Rhythm Games
- Video Games
- Game Development
- Entertainment
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: ParentCompany
  url: https://apis.io/providers/epic-games/
  name: Epic Games
  x-relationship: acquired
  x-evidence: Founded in 1995 and based in Cambridge, Massachusetts, the studio was acquired by Epic Games in 2021 and continues
    to invent the future of music and motion gaming.
- type: DomainSecurity
  url: security/harmonix-domain-security.yml
- type: Website
  url: https://www.harmonixmusic.com
- type: Blog
  url: https://www.harmonixmusic.com/blog
- type: TermsOfService
  url: https://www.harmonixmusic.com/terms
- type: PrivacyPolicy
  url: https://www.harmonixmusic.com/privacy
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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