Songtradr

Songtradr is a Santa Monica, California B2B music company that builds licensing, rights and music-data infrastructure for brands, agencies, digital platforms, artists and rightsholders. Founded in 2014, it operates a global sync-licensing marketplace alongside acquired businesses including Bandcamp, 7digital, MassiveMusic, Big Sync Music and the AI music-metadata company Musicube. Its public developer surface is the Songtradr API — a JWT-authenticated REST API, documented with a live OpenAPI 3.1 description, that returns deep music metadata (musical features, genre predictions, tags, taggrams, tag strengths, contributors, similarity vectors) and drives auto-tagging: rightsholders upload audio through a presigned S3 link and Songtradr's models classify it against a taxonomy of 350+ descriptive tags across 30+ categories, then expose semantic search over the results. First-party API clients are published for Python, JavaScript/Node and Ruby.

Songtradr publishes 3 APIs on the APIs.io network: Allowed Values API, Similarity Vector Controller API, and User API. Tagged areas include Music, Music Licensing, Sync Licensing, Music Metadata, and audio-tagging.

Songtradr’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, pricing, signup flow, and 21 more developer resources.

🌐 Visit website 📡 Source on GitHub

36.0/100 thin ▬ flat Agent 32/100 agent ready saas Full breakdown ↓
scored 2026-09-14 · rubric v0.22.0

2 APIs

MusicMusic LicensingSync Licensing Music Metadataaudio-taggingSemantic Search Machine-Learning Media Entertainment Rights Management Audio

Kin Score

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

Composite quality — 36.0/100 · thin

Contract Quality 12.8 / 23

Developer Ergonomics 8.9 / 18

Access Clarity 1.2 / 18

Operational Transparency 2.8 / 12

Contract Governance 0.5 / 11

Discoverability 6.8 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 32/100 · agent ready

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 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 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/songtradr: 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 3

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

Songtradr Allowed Values API

The allowed-values API from Songtradr — 1 operation(s) for allowed-values.

Songtradr Similarity Vector Controller API

The similarity-vector-controller API from Songtradr — 1 operation(s) for similarity-vector-controller.

Songtradr User API

The user API from Songtradr — 15 operation(s) for user.

Open Collections 4

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

API Collection

OPEN COLLECTION

Songtradr Allowed Values API

OPEN COLLECTION

Songtradr Similarity Vector Controller API

OPEN COLLECTION

Songtradr User API

OPEN COLLECTION

Rate Limits 1

Documented rate limits and quota policies.

Songtradr Rate Limits

1 limits

RATE LIMITS

Security Posture 2

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

Songtradr Authentication

http · 1 scheme

SECURITY

Songtradr Domain Security

TLSv1.3 · DMARC

SECURITY

Agentic Access 1

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

Songtradr Agentic Access

19 operations · 8 acting · 2 human-in-the-loop

19 operations · 8 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

SignUp

SignUp

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate

AgenticAccess

LLMsTxt

AgentSkill

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

DataModel

Conformance

Lifecycle

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

SDKs

SDKs

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 3

Status, limits, changes, and where to get help

Support

Support

HelpCenter

HelpCenter

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

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

Overlay

Overlay

Source (apis.yml)

aid: songtradr
name: Songtradr
description: 'Songtradr is a Santa Monica, California B2B music company that builds licensing, rights and music-data infrastructure
  for brands, agencies, digital platforms, artists and rightsholders. Founded in 2014, it operates a global sync-licensing
  marketplace alongside acquired businesses including Bandcamp, 7digital, MassiveMusic, Big Sync Music and the AI music-metadata
  company Musicube. Its public developer surface is the Songtradr API — a JWT-authenticated REST API, documented with a live
  OpenAPI 3.1 description, that returns deep music metadata (musical features, genre predictions, tags, taggrams, tag strengths,
  contributors, similarity vectors) and drives auto-tagging: rightsholders upload audio through a presigned S3 link and Songtradr''s
  models classify it against a taxonomy of 350+ descriptive tags across 30+ categories, then expose semantic search over the
  results. First-party API clients are published for Python, JavaScript/Node and Ruby.'
url: https://raw.githubusercontent.com/api-evangelist/songtradr/refs/heads/main/apis.yml
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: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - rate-limits
  - security
  generated: '2026-09-03'
  method: derived
image: https://avatars.githubusercontent.com/u/61609417?v=4
x-type: company
x-source: harvest:secondary-market
specificationVersion: '0.23'
created: '2026-08-02'
modified: '2026-08-02'
tags:
- Music
- Music Licensing
- Sync Licensing
- Music Metadata
- audio-tagging
- Semantic Search
- Machine-Learning
- Media
- Entertainment
- Rights Management
- Audio
tags_raw:
- music
- music-licensing
- sync-licensing
- music-metadata
- audio-tagging
- semantic-search
- machine-learning
- media
- entertainment
- rights-management
- audio
apis:
- aid: songtradr:songtradr-allowed-values-api
  name: Songtradr Allowed Values API
  description: The allowed-values API from Songtradr — 1 operation(s) for allowed-values.
  humanURL: https://api.songtradr.com/swagger-ui.html
  baseURL: https://api.songtradr.com
  tags:
  - allowed-values
  properties:
  - type: OpenAPI
    url: openapi/songtradr-allowed-values-api-openapi.yml
  - type: Documentation
    url: https://api.songtradr.com/swagger-ui.html
  - type: APIReference
    url: https://api.songtradr.com/v3/api-docs
  - type: Authentication
    url: authentication/songtradr-authentication.yml
  - type: Conventions
    url: conventions/songtradr-conventions.yml
  - type: ErrorCatalog
    url: errors/songtradr-problem-types.yml
  - type: DataModel
    url: data-model/songtradr-data-model.yml
- aid: songtradr:songtradr-similarity-vector-controller-api
  name: Songtradr Similarity Vector Controller API
  description: The similarity-vector-controller API from Songtradr — 1 operation(s) for similarity-vector-controller.
  humanURL: https://api.songtradr.com/swagger-ui.html
  baseURL: https://api.songtradr.com
  tags:
  - similarity-vector-controller
  properties:
  - type: OpenAPI
    url: openapi/songtradr-similarity-vector-controller-api-openapi.yml
  - type: Documentation
    url: https://api.songtradr.com/swagger-ui.html
  - type: APIReference
    url: https://api.songtradr.com/v3/api-docs
  - type: Authentication
    url: authentication/songtradr-authentication.yml
  - type: Conventions
    url: conventions/songtradr-conventions.yml
  - type: ErrorCatalog
    url: errors/songtradr-problem-types.yml
  - type: DataModel
    url: data-model/songtradr-data-model.yml
- aid: songtradr:songtradr-user-api
  name: Songtradr User API
  description: The user API from Songtradr — 15 operation(s) for user.
  humanURL: https://api.songtradr.com/swagger-ui.html
  baseURL: https://api.songtradr.com
  tags:
  - User
  tags_raw:
  - user
  properties:
  - type: OpenAPI
    url: openapi/songtradr-user-api-openapi.yml
  - type: Documentation
    url: https://api.songtradr.com/swagger-ui.html
  - type: APIReference
    url: https://api.songtradr.com/v3/api-docs
  - type: Authentication
    url: authentication/songtradr-authentication.yml
  - type: Conventions
    url: conventions/songtradr-conventions.yml
  - type: ErrorCatalog
    url: errors/songtradr-problem-types.yml
  - type: DataModel
    url: data-model/songtradr-data-model.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
- FN: Songtradr Inc.
  email: info@songtradr.com
  url: https://www.songtradr.com/
common:
- type: X-MCPServerCandidate
  url: mcp/songtradr-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: AgenticAccess
  url: agentic-access/songtradr-agentic-access.yml
- type: DomainSecurity
  url: security/songtradr-domain-security.yml
- type: Website
  url: https://www.songtradr.com/
- type: Documentation
  url: https://api.songtradr.com/swagger-ui.html
- type: APIReference
  url: https://api.songtradr.com/v3/api-docs
- type: GettingStarted
  url: https://api.songtradr.com/swagger-ui.html
- type: Support
  url: https://support.songtradr.com/hc/en-us
- type: HelpCenter
  url: https://helpdesk.songtradr.com/
- type: Blog
  url: https://www.songtradr.com/blog
- type: GitHubOrganization
  url: https://github.com/songtradr
- type: Pricing
  url: https://www.songtradr.com/pro
- type: SignUp
  url: https://www.songtradr.com/signup/personal
- type: Login
  url: https://www.songtradr.com/signin
- type: TermsOfService
  url: https://www.songtradr.com/legals/termsofuse
- type: PrivacyPolicy
  url: https://www.songtradr.com/legals/privacypolicy
- type: Packages
  url: packages/songtradr-packages.yml
- type: SDKs
  url: packages/songtradr-packages.yml
- type: Authentication
  url: authentication/songtradr-authentication.yml
- type: Conventions
  url: conventions/songtradr-conventions.yml
- type: ErrorCatalog
  url: errors/songtradr-problem-types.yml
- type: DataModel
  url: data-model/songtradr-data-model.yml
- type: Conformance
  url: conformance/songtradr-conformance.yml
- type: Lifecycle
  url: lifecycle/songtradr-lifecycle.yml
- type: LLMsTxt
  url: llms/songtradr-llms.txt
- type: AgentSkill
  url: skills/_index.yml
- type: Overlay
  url: overlays/songtradr-api-overlay.yaml
- type: RateLimits
  url: rate-limits/songtradr-rate-limits.yml
x-enrichment:
  date: '2026-08-02'
  status: enriched
  artifacts_added: 20
  pass: local-v1

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/songtradr"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/songtradr/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/songtradr/evidence"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.