ZBS Index What actually exists in applied AI, with the source next to it

mcp server

musicbrainz-mcp-server

Search MusicBrainz artists, releases, works, labels; resolve ISRC/ISWC/barcode; fetch cover art.

Description as published by the maintainer. Source

  • version 0.1.5
  • active
  • retrieval

active — Most recent push to the repository was 2026-07-30. Dashed tags are derived by ZBS Index from the published description, not stated by the maintainer.

What this server can do

10 functions, named and described by the server itself. Parameter names are shown because they say more about what a function does than its name usually does.

musicbrainz_browse_entities(link, limit, offset, target_type)
Paginate the COMPLETE set of entities linked to a parent MBID — every release-group by an artist, every release on a label, every recording of a work, every release in a release-group. This is the only complete-enumeration path: the get_* tools embed at most one page (25) of any linked list, so use this tool whenever a linked set may exceed a page (a prolific artist, a major label with thousands of releases, a heavily-covered work). Provide exactly ONE link MBID matching a valid parent→child relationship for the target_type. Pages arbitrarily deep via offset; totalCount is the true upstream total. Required: target_type, link.
musicbrainz_get_artist(mbid, inc_relationships, inc_release_groups)
Artist profile by MBID: type (person/group/…), country, life span, gender, area, aliases, tags/genres, plus the discography (release-groups) and band-membership / collaboration relationships and external links (Wikidata QID, Discogs, official site — surfaced as url-rels chainable to those servers). The 80% artist-detail call. Discography and relationships are capped at one page (25); for a prolific artist's complete release-group list, call musicbrainz_browse_entities with target_type=release-group and the artist link. Required: mbid.
musicbrainz_get_cover_art(mbid, entity_type)
Cover Art Archive images for a release or release-group MBID: front/back flags, image types, full-resolution URLs, and 250/500/1200px thumbnail URLs. Returns an empty image set (NOT an error) when the entity has no art — absence of art is information. Art is served at the release level; a release-group MBID resolves to a representative release's art automatically. URLs are linked, never rehosted — image copyright stays with the rights holders (only MusicBrainz core metadata is CC0). Required: mbid.
musicbrainz_get_label(mbid)
Label by MBID: type (Original Production, Reissue, Imprint, …), country, life span, label code (the LC number), area, aliases, tags, and external links (url-rels — Wikidata, Discogs, official site). A label's releases are a potentially huge linked set (a major label can have tens of thousands), so they are NOT embedded here — enumerate them with musicbrainz_browse_entities (target_type=release, link.label). Required: mbid.
musicbrainz_get_recording(mbid, inc_relationships)
Recording (a specific performance/track, distinct from the abstract work) by MBID: length, artist credits, ISRCs, the releases it appears on, the work(s) it performs (work-rels — chain to musicbrainz_get_work), and performance/production relationships (who played, produced, engineered, conducted — each with the role and the credited artist MBID). Relationships are capped at one page; for a heavily-covered recording call musicbrainz_browse_entities with target_type=recording and link.work. Required: mbid.
musicbrainz_get_release(mbid)
One edition's full detail by MBID: the tracklist (media → tracks → recordings with lengths and recording MBIDs), label + catalog number, barcode, country, release date, format, packaging, text representation (language/script), and a cover-art availability stub. Track lengths are rendered m:ss (stored as milliseconds upstream). For the actual cover image URLs, call musicbrainz_get_cover_art with this release MBID. Required: mbid.
musicbrainz_get_release_group(mbid)
Release-group ("the album" above specific pressings) by MBID: primary type (Album/Single/EP) and secondary types (Live/Compilation), first-release date, artist credit, the list of releases (editions), tags/genres, and a cover-art availability flag from the WS/2 payload (use musicbrainz_get_cover_art for actual image URLs). The embedded releases list is capped at one page (25); for the complete set of editions, call musicbrainz_browse_entities with target_type=release and link.release-group. For a specific edition's tracklist, take a release MBID from the releases list and call musicbrainz_get_release. Required: mbid.
musicbrainz_get_work(mbid, inc_relationships)
Work (a composition — the song as written, distinct from any specific recording) by MBID: type, language(s), ISWCs (the work-level standard identifier), writer/composer/lyricist relationships (with the credited artist MBID), aliases, tags, and the recordings that perform it. The recording relationships are returned in full (the work lookup does not page them). Required: mbid.
musicbrainz_lookup_identifier(value, id_type)
Resolve a standard identifier to MusicBrainz entities without a name search — the deterministic path when you already hold an ID. id_type=isrc → recordings (a recording-level code, often shared by several recordings); id_type=iswc → works (a composition-level code); id_type=barcode → releases (UPC/EAN). ISRC and ISWC hit dedicated exact endpoints; barcode is a Lucene search filter so results are ranked (exact match scores 100). The output kind field tells you which entity type came back. Required: id_type, value.
musicbrainz_search_entities(limit, query, offset, entityType)
Full-text search across a MusicBrainz entity type (artist, release-group, release, recording, work, label) using a Lucene query string. Returns ranked matches with MBID, name/title, disambiguation, type, and a 0–100 relevance score (100 = exact). Starting point when resolving a name to an MBID — chain the returned MBID into the matching musicbrainz_get_* tool. Results are in MusicBrainz score-descending order. Supports field-scoped Lucene syntax (e.g. `artist:radiohead AND country:GB`). Required: entityType, query.

Last successful function declaration observed on . Source: https://musicbrainz.caseyjhand.com/mcp. We list what the server declared; we do not call any of these functions.

Endpoint status observed on . Source: https://musicbrainz.caseyjhand.com/mcp.

Signals

These are separate measurements of different things. They are deliberately not combined into one score, because a popularity number that mixes website traffic with saves and stars cannot be checked or acted on.

Signal Value What it measures Window Observed Source
GitHub stars 1 Number of GitHub accounts that bookmarked this repository since it was created. It is a bookmark count, not installs, not active users and not quality. cumulative, all time GitHub
Last commit 2026-07-30 Date of the most recent push to any branch. This is the strongest cheap indicator of whether the project is still maintained. point in time GitHub
Open issues 4 Open issues plus open pull requests, as GitHub counts them together. A high number can mean an active project or an abandoned one. as of fetch GitHub
Latest published version 0.1.5 Latest version string the maintainer published to the registry. as of fetch Model Context Protocol
Registry record last updated 2026-06-20 When the registry record was last updated by its maintainer. point in time Model Context Protocol
License Apache-2.0 Licence GitHub detected in the repository. Detection can be wrong; the LICENSE file is authoritative. as of fetch GitHub
First listed in the MCP Registry 2026-06-20 Date this server was first published to the official MCP Registry. Not a usage or quality measure. point in time Model Context Protocol
repository status active The repository exists on GitHub and is not archived. This says nothing about how recently it was worked on. as of fetch GitHub
mcp tools declared 10 tools Number of functions the server itself declared when asked to list them. This is what the server offers an agent, not a measure of how well any of them work. as of probe musicbrainz.caseyjhand.com
mcp endpoint status ok The server listed 10 functions when asked. as of probe musicbrainz.caseyjhand.com

Where to get it

Related, by what their authors tagged them

  • io.github.AliAkhtari78/spotifyscraper — last commit 2026-08-05, shares metadata, music
    Public Spotify metadata, lyrics and podcasts for LLM agents. No API key, read-only.
  • YTDL RMCP — last commit 2026-08-06, shares metadata
    yt-dlp search, download, metadata, delivery, and Plex workflows over MCP and CLI.
  • YTDL RMCP — last commit 2026-08-06, shares metadata
    Rust MCP server and CLI for yt-dlp search, downloads, metadata, transfers, and Plex playlists.
  • Gemina FileTag — last commit 2026-07-31, shares metadata
    Tag, rename, and enrich PDFs and images. Free tier: 1,500 tags/month, no credit card.
  • Compoid MCP — last commit 2026-05-05, shares metadata
    A collaborative repository where AI agents and humans share research, images, videos and papers.
  • io.github.cassilup/filewash — last commit 2026-06-09, shares metadata
    Privacy-first file tools for AI agents — PDF & image ops, metadata scrubbing, background removal.
  • io.github.groupdocs-metadata/groupdocs-metadata-mcp — last commit 2026-07-25, shares metadata
    MCP server for GroupDocs.Metadata — read, search, write, and remove document metadata.
  • io.github.HMAKT99/akf — shares metadata
    Trust metadata for AI agents — check files before building on them, stamp verified work.
  • THIRI Chord Intelligence — last commit 2026-08-01, shares music
    Deterministic music theory for agents: analyze, voice, reharmonize, conduct — computed, not guessed
  • bitwize-music-studio-claude-ai-music-skills-about — last commit 2026-08-05, shares music
    Provides information about the bitwize-music plugin, its version, and its creator. Use when the user asks about the plu…

These share tags the maintainers applied themselves, such as metadata, music. Common tags like "mcp" or "ai" are ignored for this: agreeing with six hundred other projects is not a similarity.

This is not a recommendation and not a test result. It is a map of what the authors said their work is about.

Also from cyanheads

How the author describes it

Topics the maintainer set on GitHub: ai-agents, cover-art-archive, cyanheads, discography, isrc, mbid, mcp, mcp-server, metadata, model-context-protocol, music, music-metadata, musicbrainz, typescript.

This record as data

Every field on this page, with its source and observation date, is in the catalog JSON. Fetch the whole kind at once instead of parsing this HTML.

GET /api/v1/entries/mcp_server.json

Sources

  1. cyanheads/musicbrainz-mcp-server on GitHub — GitHub, observed , trust tier 3.
  2. Tools declared by the MCP server at https://musicbrainz.caseyjhand.com/mcp — musicbrainz.caseyjhand.com, observed , trust tier 4.
  3. Official MCP Registry — Model Context Protocol, observed , trust tier 1.