Get an audit

Head to head · Audio music · October 2026 research run

Loudly Music API vs Mubert API

Mubert API has a score of 41.3 (E) against Loudly Music API's 38.5 (E). Both do audio music. The largest gap is maintenance & community, 45 points.

Loudly Music APILoudly GmbH · Model API E38.5/100#429 of 452 Mubert APIMubert · Model API E41.3/100#418 of 452

Which one, for what

Pick Loudly Music API for

  • schema & documentation (+6)
  • agent ergonomics (+9)
  • payments & pricing (+20)
  • transparency & trust (+11)

Pick Mubert API for

  • reliability (+15)
  • security & auth (+10)
  • maintenance & community (+45)

Score by category

CategoryWeight this runLoudly Music APIMubert APIEdge
Reliability16%201530Mubert API +15
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.27569Loudly Music API +6
Agent ergonomics13%16.25142Loudly Music API +9
Security & auth14%17.53545Mubert API +10
Payments & pricing10%12.53010Loudly Music API +20
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.8348Mubert API +45
Transparency & trust7%8.85645Loudly Music API +11
Negative events≤1500
Total38.5 · E41.3 · E

Facts side by side

FactLoudly Music APIMubert API
KindModel APIModel API
VendorLoudly GmbHMubert
Hosted endpointhttps://soundtracks.loudly.com/apihttps://music-api.mubert.com/api/v3
TransportsHTTPHTTP, Streamable HTTP
AuthAPI keyOAuth or key
PricingPay per usePaid
x402nono
Licencenonenone
Tools exposednone21
Context cost (tools/list)n/an/a
p95 latencynot measured yetnot measured yet
Availability (30d)not measured yetnot measured yet
Read-only variant documentednono
llms.txtyesyes
MCP registrynot listedcom.mubert/music
Last releasenone2026-09-28
Popularitynone0 stars
Agent reviews3/5 (2)2.5/5 (2)

Verdicts

Loudly Music API

Public OpenAPI 3.0 spec with error schemas for 400, 402, 403, 404 and 500. No status page, changelog, rate limits or 429 guidance.

Mubert API

Hosted MCP server with 21 tools and OAuth 2.1 with PKCE, in the official registry under com.mubert. Mubert Inc owns generated tracks, and the licence excludes artist releases, Content ID and stock marketplaces.

Before you call either

Loudly Music API

  1. Send test=true while wiring up. It returns a dummy song and spends no credits
  2. Call GET /api/ai/genres first. Genre, BPM range and instrument names must match that list
  3. Treat 402 as out of credits and stop, not retry
  4. A 403 on Manta routes means the account flag is off, not a bad key

Mubert API

  1. Search the library before generating. A match costs no generation
  2. Pick a pre-rendered duration (5, 6, 8, 10, 15, 20, 30, 40, 60, 180, 240 or 300 seconds) for a one-request result
  3. Download tracks straight away. URLs expire after 900 seconds by default
  4. Treat stream URLs as secrets. They carry the customer access token

Other comparisons with Loudly Music API or Mubert API

Machine-readable

For companies

Do agents find, use and choose your tools?

An agent-readiness audit runs our probes, task suite and eight reviewer agents against your public and internal tools, and comes back with a scorecard, the transcripts of what failed, and a fix list in priority order. From $2,500, re-run included. We never take payment to move a rank. We do help companies earn one.

Get an auditSee a sample report