The Echo Nest
The Echo Nest was a music-intelligence company, spun out of the MIT Media Lab, that ran a developer platform and API for music understanding — machine-listening audio analysis (tempo, key, energy, danceability, valence), artist and song metadata, automated playlisting and taste profiles, and the Rosetta Stone service for translating artist and track IDs across music services. It was acquired by Spotify in March 2014 (reported at roughly €49.7M / ~$100M). Spotify consolidated onto its own Web API: The Echo Nest API stopped issuing new keys on 2016-03-29 and stopped serving requests on 2016-05-31, with developers directed to the Spotify Web API (whose audio-features and audio-analysis endpoints descend from Echo Nest technology). The developer.echonest.com portal no longer resolves; the echonest.com domain now redirects to an unrelated WordPress site. This profile was surfaced as a matrix-partners portfolio company; it is retained for historical/lineage reference and has no live, public API surface to enrich.
Index entry only — little beyond a description and a link, and nothing machine-readable enough for an agent to act on without a human reading the site first.
The Echo Nest is tracked in the API Evangelist network. This page is the human-readable profile that sits on top of the machine-readable index we maintain at apis.io.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — The Echo Nest scores 6.8/100 (minimal), with a separate agent-readiness read of 0/100 (human only). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.
Kin Score
How this is scored →scored 2026-07-27 · rubric v0.5
The Echo Nest is in the network as a tracked entity. We haven't yet indexed a public API surface for it — when one is published, the artifacts, score, and agent-readiness read will appear here automatically. The source repository is where that profile is built.
← All providers · Data indexed from github.com/api-evangelist/the-echo-nest · machine-readable index on apis.io