LRCLIB

LRCLIB provides a free and open lyrics database accessible via a public API. It offers endpoints to search for songs, retrieve lyrics, and obtain metadata such as artists and albums. The service is unauthenticated, CORS-enabled, and includes generous rate limits for anonymous users, with optional registration for higher limits. Documentation is available in Markdown and plain text formats.

LRCLIB is listed with 1 API on the APIs.io network. Tagged areas include Company, Lyrics, Music, API, and OpenSource.

LRCLIB’s developer surface includes documentation, API reference, getting-started guide, and 7 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

11.0/100 emerging Agent 9/100 agent aware Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 API

Company Lyrics MusicAPIOpenSource

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 11.0/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 4.9 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 5.6 / 9

Regulatory Posture 0.9 / 15

Agent readiness — 9/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 4 / 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

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):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)

10 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 0.0 — up to +25.0 composite points
Access Clarity scores 0.0 — up to +20.0 composite points
Developer Ergonomics scores 28.6 — up to +14.3 composite points

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.

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/lrclib/apis.yml: open an issue on github.com/api-evangelist/lrclib 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 →

APIs 1

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

LRCLIB API

Public API for accessing lyrics data, supporting search, retrieval, and metadata endpoints. No authentication required.

Security Posture 1

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

Lrclib Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

llms

llms

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

ErrorCatalog

ErrorCatalog

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: lrclib
name: LRCLIB
description: LRCLIB provides a free and open lyrics database accessible via a public API. It offers endpoints to search for
  songs, retrieve lyrics, and obtain metadata such as artists and albums. The service is unauthenticated, CORS-enabled, and
  includes generous rate limits for anonymous users, with optional registration for higher limits. Documentation is available
  in Markdown and plain text formats.
url: https://artifacts.apis.io/lrclib/apis.yml
image: https://lrclib.net/favicon.ico
x-type: company
x-source: harvest:new-submission
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-28 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-28'
modified: '2026-10-28'
tags:
- Company
- Lyrics
- Music
- API
- OpenSource
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: ErrorCatalog
  url: errors/lrclib-problem-types.yml
- type: LLMsTxt
  url: llms/lrclib-llms.txt
- type: Hosts
  url: hosts/lrclib-hosts.yml
- type: Vendors
  url: vendors/lrclib-vendors.yml
- type: DomainSecurity
  url: security/lrclib-domain-security.yml
- type: Website
  url: https://lrclib.net/
- type: Documentation
  url: https://lrclib.net/docs/api.md
- type: APIReference
  url: https://lrclib.net/docs/api.md
- type: GettingStarted
  url: https://lrclib.net/docs#quickstart
- type: llms
  url: https://lrclib.net/llms.txt
apis:
- name: LRCLIB API
  description: Public API for accessing lyrics data, supporting search, retrieval, and metadata endpoints. No authentication
    required.
  humanURL: https://lrclib.net/docs/api.md
  baseURL: https://lrclib.net
  aid: lrclib:lrclib-api
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: The provider offers only markdown documentation and returns a 404 HTML page for typical OpenAPI URLs (e.g., https://lrclib.net/openapi.json).
  evidence:
  - url: https://lrclib.net/openapi.json
    status: 404
  checked: '2026-10-28'
x-submission-probe: 200, 2026-10-26
x-enrichment:
  date: '2026-10-28'
  status: enriched
  artifacts_added: 10
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

LRCLIB API — frequently asked questions

Does LRCLIB have an API?

Yes. APIs.io lists 1 API from LRCLIB, including LRCLIB API.

Is the LRCLIB API ready for AI agents?

LRCLIB has a Kin Score of 11.0 out of 100 (emerging) and an Agent Readiness score of 8.9 (agent-aware), scored by API Evangelist on 2026-10-31.

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