HumMatch

HumMatch is a vocal‑matching web app for karaoke and everyday singers. It lets users hum three notes to measure their vocal range, generates a Vocal ID, and then searches over 66,000 songs to find matches ranked by vocal fit, difficulty, and voice type. The service offers a free tier and premium plans for deeper analysis and personalized recommendations.

HumMatch publishes 2 API contracts indexed on the APIs.io network, including Partner API API, and 1 more. Tagged areas include Company, Vocal, Music, Karaoke, and Voice.

The HumMatch catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

HumMatch’s developer surface includes pricing, engineering blog, and 16 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

37.4/100 thin Agent 26/100 agent aware Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessFreemium

1 published contract 1 MCP Servers

CompanyVocalMusic Karaoke Voice

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 37.4/100 · thin

Contract Quality 13.4 / 21

Developer Ergonomics 0.4 / 17

Access Clarity 10.5 / 17

Operational Transparency 0.0 / 11

Contract Governance 2.2 / 10

Discoverability 5.5 / 9

Regulatory Posture 1.9 / 15

Agent readiness — 26/100 · agent aware

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 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

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) 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.

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.

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/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author Ask about this →
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented) Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document Ask about this →
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented) Ask about this →

8 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Developer Ergonomics scores 2.4 — up to +19.5 composite points Ask about this →
Operational Transparency scores 0.0 — up to +13.0 composite points Ask about this →
Contract Governance scores 22.0 — up to +9.4 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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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 the provider profile at artifacts.apis.io/hummatch-me/apis.yml: open an issue on github.com/api-evangelist/hummatch-me to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 2

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

OpenAPI

measured — observed by APIs.io (published)

APIs 2

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

HumMatch Partner API

Partner-facing API over HumMatch's vocal-range and song-matching logic.

HumMatch Partner API API

A partner-facing API over HumMatch's real vocal-range and song-matching logic: normalize a singer's vocal profile, score how well a specific catalog song fits that profile, and ...

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

HumMatch MCP Server

Remote MCP server at hummatch.me.

MCP SERVER

HumMatch API pricing

Prices published by HumMatch. A free plan or tier is listed.

Plan	Price
Free	Free
Squad Leader	$9.95/month
Coach	$19.95/month

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

HumMatch Plans Pricing

3 plans

PLANS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Hummatch Me Context

5 classes · 37 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

HumMatch API Rules

59 rules · 55 error-severity 1 warn-severity 3 info-severity

SPECTRAL

JSON Schema 5

Standalone JSON Schema definitions for this provider's data models.

GroupFit

2 properties

JSON SCHEMA

HumProfileInput

6 properties

JSON SCHEMA

ScoredSong

21 properties

JSON SCHEMA

SongFit

12 properties

JSON SCHEMA

VocalProfile

6 properties

JSON SCHEMA

Security Posture 1

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

HumMatch Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

Login

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

MCPServer

MCPServer

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

Conformance

DataModel

ErrorCatalog

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Commercial 4

Pricing, plans, and the legal terms of use

Plans

TermsOfService

PrivacyPolicy

Pricing

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: hummatch-me
name: HumMatch
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: low
  source:
  - plans
  - security
  generated: '2026-11-13'
  method: derived
image: https://hummatch.me/images/hummatch-homepage-solo-singer.png
description: HumMatch is a vocal‑matching web app for karaoke and everyday singers. It lets users hum three notes to measure
  their vocal range, generates a Vocal ID, and then searches over 66,000 songs to find matches ranked by vocal fit, difficulty,
  and voice type. The service offers a free tier and premium plans for deeper analysis and personalized recommendations.
url: https://artifacts.apis.io/hummatch-me/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-11 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-11'
modified: '2026-11-11'
tags:
- Company
- Vocal
- Music
- Karaoke
- Voice
tags_raw:
- Company
- Vocal
- Music
- Karaoke
- Voice
- API
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Spectral
  url: rules/hummatch-me-rules.yml
- type: JSONLD
  url: json-ld/hummatch-me-context.jsonld
- type: Vocabulary
  url: vocabulary/hummatch-me-vocabulary.yml
- type: Conformance
  url: conformance/hummatch-me-conformance.yml
- type: Plans
  url: plans/hummatch-me-plans-pricing.yml
- type: DataModel
  url: data-model/hummatch-me-data-model.yml
- type: ErrorCatalog
  url: errors/hummatch-me-problem-types.yml
- type: LLMsTxt
  url: llms/hummatch-me-llms.txt
- type: MCPServer
  url: mcp/hummatch-me-mcp.yml
- type: Hosts
  url: hosts/hummatch-me-hosts.yml
- type: Vendors
  url: vendors/hummatch-me-vendors.yml
- type: TermsOfService
  url: https://hummatch.me/terms
- type: PrivacyPolicy
  url: https://hummatch.me/privacy
- type: Pricing
  url: https://hummatch.me/pricing
- type: Login
  url: https://hummatch.me/sign-in
- type: Blog
  url: https://hummatch.me/blog
- type: DomainSecurity
  url: security/hummatch-me-domain-security.yml
- type: Website
  url: https://hummatch.me/
apis:
- name: HumMatch Partner API
  description: Partner-facing API over HumMatch's vocal-range and song-matching logic.
  humanURL: https://hummatch.me/openapi.yaml
  baseURL: https://hummatch.me/api
  aid: hummatch-me:hummatch-partner-api
- aid: hummatch-me:hummatch-partner-api-api
  name: HumMatch Partner API API
  description: 'A partner-facing API over HumMatch''s real vocal-range and song-matching logic: normalize a singer''s vocal
    profile, score how well a specific catalog song fits that profile, and find shared-range song candidates for a small group.
    Every endpoint here is stateless computation over caller-submitted dat'
  humanURL: https://hummatch.me/openapi.yaml
  baseURL: https://hummatch.me/api
  properties:
  - type: OpenAPI
    url: openapi/_original/hummatch-me-api-openapi.yml
  - type: JSONSchema
    url: json-schema/hummatch-me-scored-song-schema.json
  - type: JSONSchema
    url: json-schema/hummatch-me-vocal-profile-schema.json
  - type: JSONSchema
    url: json-schema/hummatch-me-group-fit-schema.json
  - type: JSONSchema
    url: json-schema/hummatch-me-song-fit-schema.json
  - type: JSONSchema
    url: json-schema/hummatch-me-hum-profile-input-schema.json
x-enrichment:
  date: '2026-11-11'
  status: enriched
  artifacts_added: 25
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

HumMatch API — frequently asked questions

Does HumMatch have an API?

Yes. APIs.io lists 2 APIs from HumMatch, including HumMatch Partner API and HumMatch Partner API API.

Is there an OpenAPI specification for the HumMatch API?

Yes. APIs.io indexes 1 OpenAPI specification for HumMatch, each linked for download from this page.

How do I authenticate with the HumMatch API?

HumMatch uses bearer-token authentication.

How much does the HumMatch API cost?

HumMatch publishes its prices; its Squad Leader plan is $9.95/month as of 2026-11-11. APIs.io lists 3 pricing plans for HumMatch, with each plan's price, limits and inclusions under Pricing on this page.

Does HumMatch have an MCP server?

Yes. APIs.io lists 1 MCP server for HumMatch: Remote MCP server at hummatch.me.

Is the HumMatch API ready for AI agents?

HumMatch has a Kin Score of 37.4 out of 100 (thin) and an Agent Readiness score of 26.3 (agent-aware), scored by API Evangelist on 2026-11-13.

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