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 API contracts indexed 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.

The Songtradr catalog on APIs.io includes 1 Spectral governance ruleset.

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

🌐 Visit website 📡 Profile data on GitHub

34.6/100 thin ▬ flat Agent 30/100 agent ready Heartbeat 0/100 dormant saas Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

1 published contract 3 Agent Skills

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

Kin Score

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

Composite quality — 34.6/100 · thin

Contract Quality 10.2 / 19

Developer Ergonomics 7.4 / 15

Access Clarity 0.0 / 15

Operational Transparency 2.3 / 10

Contract Governance 1.6 / 9

Discoverability 5.5 / 8

Regulatory Posture 1.5 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 30/100 · 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

Pagination 0 / 5

Distinct Operations 0 / 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 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.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% 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):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship 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 →
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 →
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks 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):

Access Clarity scores 0.0 — up to +20.0 composite points Ask about this →
Contract Quality scores 54.4 — up to +11.4 composite points Ask about this →
Developer Ergonomics scores 49.4 — up to +10.1 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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Standards implemented 1

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.

OpenAPI

measured — observed by APIs.io (published)

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 3

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

Songtradr Allowed Values API

OPEN COLLECTION

Songtradr Similarity Vector Controller API

OPEN COLLECTION

Songtradr User API

OPEN COLLECTION

Agent Skills 3

Packaged agent skills for driving this provider's APIs from an AI assistant.

Auto-tag a music catalog with Songtradr

AGENT SKILL

Manage a Songtradr account and API access

AGENT SKILL

Search and analyze recordings with Songtradr

AGENT SKILL

Rate Limits 1

Documented rate limits and quota policies.

Songtradr Rate Limits

1 limits

RATE LIMITS

Spectral Rules 1

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

Songtradr API Rules

70 rules · 55 error-severity 12 warn-severity 3 info-severity

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Songtradr Api Overlay

10 actions · documentation · songtradr-api-openapi.yml

DERIVED

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 (API Evangelist recommendations) 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: '2026-11-13'
  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
- Machine-Learning
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

Songtradr API — frequently asked questions

Does Songtradr have an API?

Yes. APIs.io lists 3 APIs from Songtradr, including Songtradr Allowed Values API, Songtradr Similarity Vector Controller API and Songtradr User API.

Is there an OpenAPI specification for the Songtradr API?

Yes. APIs.io indexes 3 OpenAPI specifications for Songtradr, each linked for download from this page.

How do I authenticate with the Songtradr API?

Songtradr uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as Songtradr Authentication.

Is the Songtradr API ready for AI agents?

Songtradr has a Kin Score of 34.6 out of 100 (thin) and an Agent Readiness score of 29.8 (agent-ready), scored by API Evangelist on 2026-11-13.

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