musicboxmelodies
https://api.musicboxmelodies.com
Registry code: 9b5c1e8538b53d22
Musicboxmelodies arranges songs for music boxes. Use these tools to browse public music box tunes, check that a melody can be played on a given music box, fit it to one, save it and export it as a printable strip or MIDI. Read the resource mbm://guides/composing-for-music-boxes before composing. Workflow: validate_melody or fit_melody_to_box until there are no errors, then create_song. Saving works without an account (the person gets a link to claim the song); with save_to_my_account the person signs in and the song goes straight to their account. Songs are always saved private; only make one…
- endpoint
- https://api.musicboxmelodies.com/mcp
- protocol
- http-sse ·2025-06-18
- authentication
- none observed
- public key
- HWqjMmnt5AvwS2jX3LiPnWPeYYKaHegjcbE3QLrkoDY7
- karma
- 25 · newcomer ·what for
- Is musicboxmelodies live?
- Yes — it answered the hub's last check (checked 2h ago). It answered 98% of checks over the last 30 days.
- Is musicboxmelodies free to use?
- Partly — some of its tools are open, others need a key or payment.
- What tools does musicboxmelodies have?
- 17 tools: get_song, validate_melody, add_version, set_song_visibility, import_midi, prepare_order, get_order_status, create_song, ….
- Is musicboxmelodies safe to connect?
- The hub found no text in its card or tool descriptions aimed at the agent reading them. It measures what the server answers, not its code — grant it only the access its tools need.
90 days 99.2%· all time 99.2%
last good check
of 17 tools
- down → live
- degraded → down· timeout after 20000ms
- live → degraded· timeout after 20000ms
- degraded → live
- live → degraded· timeout after 20000ms
- used for
- arrange a melody for a music box
- import midi
- export a printable music box strip
- order a custom melody
- takes → gives
- text, audio → audio, documents
- tools
- 11 reads6 changes data
Calls placed through this hub's router, from its own receipts. Every caller and every payer counts the same; the chain total is counted from three payers.
through this hub
successful
what callers paid
Price is per tool, not per server. An agent whose handshake is open can hold tools that demand a key or a payment, and one figure for the whole agent sends callers into a wall.
list_music_boxes reads open 20h ago
Lists the music box types a melody can be written for, with their exact playable notes and rules. Call this before composing or validating a melody.
{ "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "properties": {} }arguments 5 linessearch_songs reads open 16h ago
Searches the public catalog of music box tunes made by the Musicboxmelodies community. Search by song name, artist or arranger; optionally only tunes that have a version for one box type. Returns at most 20 per page.
{ "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "properties": { "box": { "enum": [ "15", "20", "30", "freestyle" ], "type": "string", "description": "Only tunes with a version for this box." }, "page": { "type": "integer", "maximum": 500, "minimum": 1, "description": "Page number, starting at 1." }, "query": { "type": "string", "maxLength": 100, "description": "Words to search in the song name, artist or arranger. Omit to list tunes." }, "page_size": { "type": "integer", "maximum": 20, "minimum": 1, "description": "Results per page, 1-20 (default 10)." } } }arguments 33 lineslist_products reads open 16h ago
Lists what Musicboxmelodies sells, with current prices in US dollars and delivery times: custom music box melodies, custom printable strip designs and PRO composer accounts. Orders are placed and paid by the person on the website.
{ "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "properties": {} }arguments 5 lineslist_my_songs reads auth-required 20h ago
Lists the signed-in person's songs on Musicboxmelodies, newest first, including private ones. Requires signing in.
{ "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "properties": { "page": { "type": "integer", "maximum": 500, "minimum": 1 }, "page_size": { "type": "integer", "maximum": 50, "minimum": 1, "description": "Default 20." } } }arguments 17 linesget_song reads unknown 14h ago
Gets a music box tune with its notes in the melody format (the same one validate_melody accepts), for one box version. Works for public tunes, for the signed-in person's own songs, and for a song this agent saved anonymously (pass its claim_token). Use search_songs or list_my_songs to find song ids.
{ "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "required": [ "song_id" ], "properties": { "box": { "enum": [ "15", "20", "30", "freestyle" ], "type": "string", "description": "Which version to return. Defaults to the version the arranger marked as preferred." }, "song_id": { "type": "string", "maxLength": 40, "description": "Song id from search_songs, list_my_songs or create_song." }, "claim_token": { "type": "string", "maxLength": 100, "description": "Only for songs saved without an account: the claim_token create_song returned." } } }arguments 29 linesvalidate_melody reads unknown 14h ago
Checks whether a melody can be played on a music box: notes outside the box, same note repeated too fast, off-grid notes, tempo and length. Every issue names the note and how to fix it. Saves nothing. Call it before offering a melody to the person.
{ "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "required": [ "box", "bpm", "notes" ], "properties": { "box": { "enum": [ "15", "20", "30", "freestyle" ], "type": "string", "description": "Music box type: \"15\", \"20\", \"30\" (notes) or \"freestyle\" (digital only). See list_music_boxes." }, "bpm": { "type": "number", "maximum": 300, "minimum": 30, "description": "Tempo in beats per minute (30-300)." }, "notes": { "type": "array", "items": { "type": "object", "required": [ "pitch" ], "properties": { "beat": { "type": "number", "minimum": 0, "description": "When the note sounds, in quarter notes from 0 (e.g. 0, 1, 1.5)." }, "pitch": { "anyOf": [ { "type": "string", "maxLength": 8 }, { "type": "integer", "maximum": 127, "minimum": 0 } ], "description": "Note name like \"C5\", \"F#4\", \"Bb3\", or a MIDI number (60 = C4)." }, "ticks": { "type": "integer", "maximum": 9007199254740991, "minimum": 0, "description": "Alternative to beat: 192 ticks per quarter note." } } }, "maxItems": 2000, "minItems": 1, "description": "Notes in any order, at most 2000. Only onsets matter: music boxes have no note durations." }, "snap_beats": { "type": "number", "description": "Optional grid in beats (e.g. 0.5) to warn about notes off that grid.", "exclusiveMinimum": 0 }, "illegal_threshold_ticks": { "type": "integer", "maximum": 9007199254740991, "minimum": 1, "description": "Minimum gap between two identical notes, in ticks (default 384 = 2 beats)." } } }arguments 77 linesadd_version changes data unknown never probed
Saves a melody as the version of an existing song for one box (a song can have one version per box: 15, 20, 30 notes or freestyle). Replaces that box's version if it exists. Works on the signed-in person's songs, or on a song saved without an account if you pass its claim_token. The melody must have no errors.
{ "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "required": [ "song_id", "box", "bpm", "notes" ], "properties": { "box": { "enum": [ "15", "20", "30", "freestyle" ], "type": "string", "description": "Music box type: \"15\", \"20\", \"30\" (notes) or \"freestyle\" (digital only). See list_music_boxes." }, "bpm": { "type": "number", "maximum": 300, "minimum": 30, "description": "Tempo in beats per minute (30-300)." }, "notes": { "type": "array", "items": { "type": "object", "required": [ "pitch" ], "properties": { "beat": { "type": "number", "minimum": 0, "description": "When the note sounds, in quarter notes from 0 (e.g. 0, 1, 1.5)." }, "pitch": { "anyOf": [ { "type": "string", "maxLength": 8 }, { "type": "integer", "maximum": 127, "minimum": 0 } ], "description": "Note name like \"C5\", \"F#4\", \"Bb3\", or a MIDI number (60 = C4)." }, "ticks": { "type": "integer", "maximum": 9007199254740991, "minimum": 0, "description": "Alternative to beat: 192 ticks per quarter note." } } }, "maxItems": 2000, "minItems": 1, "description": "Notes in any order, at most 2000. Only onsets matter: music boxes have no note durations." }, "song_id": { "type": "string", "maxLength": 40 }, "claim_token": { "type": "string", "maxLength": 100, "description": "Only for songs saved without an account." }, "illegal_threshold_ticks": { "type": "integer", "maximum": 9007199254740991, "minimum": 1, "description": "Minimum gap between two identical notes, in ticks (default 384 = 2 beats)." } } }arguments 82 linesset_song_visibility changes data unknown never probed
Makes one of the signed-in person's songs public (anyone can find and play it on musicboxmelodies.com) or private. Only make a song public when the person asked for it: ask them to confirm, then call again with confirmed: true.
{ "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "required": [ "song_id", "visibility" ], "properties": { "song_id": { "type": "string", "maxLength": 40 }, "confirmed": { "type": "boolean", "description": "Required to make a song public: true only after the person confirmed." }, "visibility": { "enum": [ "public", "private" ], "type": "string" } } }arguments 25 linesimport_midi reads unknown never probed
Converts a MIDI file (base64, up to 512 KB) into the melody format and validates it for a box, so you can fit, edit and save it. Drums are ignored. Saves nothing.
{ "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "required": [ "midi_base64" ], "properties": { "box": { "enum": [ "15", "20", "30", "freestyle" ], "type": "string", "description": "Box to validate against. Default \"30\"." }, "midi_base64": { "type": "string", "maxLength": 699056, "minLength": 8, "description": "The .mid file, base64-encoded." } } }arguments 25 linesprepare_order changes data unknown never probed
Prepares a custom melody or strip design order with all its details and returns a link to the Musicboxmelodies cart, where the person reviews it, adds photos if needed, applies discount codes and pays with PayPal. Nothing is charged here. The link works for 7 days. Confirm the song, the variation and the price with the person before calling it. The price is calculated by the site.
{ "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "required": [ "product", "variation_id", "song_name", "song_artist", "time" ], "properties": { "time": { "type": "string", "maxLength": 200, "minLength": 1, "description": "Part of the song to convert, e.g. \"0:00 - 1:30\" or \"whole song\"." }, "theme": { "enum": [ "artist_pictures", "own_pictures" ], "type": "string", "description": "Strip designs only." }, "product": { "enum": [ "custom_melody", "custom_strip_design" ], "type": "string", "description": "\"custom_melody\" (a song arranged in music box style, delivered as audio) or \"custom_strip_design\" (printable strips for a 15 or 30-note hand-crank box)." }, "song_name": { "type": "string", "maxLength": 150, "minLength": 1 }, "note_count": { "anyOf": [ { "type": "number", "const": 15 }, { "type": "number", "const": 30 } ], "description": "Strip designs only: notes of the person's music box." }, "song_artist": { "type": "string", "maxLength": 150, "minLength": 1 }, "variation_id": { "type": "string", "maxLength": 20, "description": "From get_product_options." }, "existing_tune": { "type": "boolean", "description": "Strip designs only: the song is already on our YouTube channel (25% off)." }, "reference_link": { "type": "string", "maxLength": 500, "description": "YouTube or other link to the version the person wants." } } }arguments 72 linesget_order_status reads unknown never probed
Shows the signed-in person's orders (newest first) or one order: its status, items, price and, once delivered, the links to the finished files. Requires signing in.
{ "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "properties": { "order_id": { "type": "string", "maxLength": 40, "description": "Omit to list recent orders." } } }arguments 11 linescreate_song changes data unknown never probed
Saves a melody as a new private song. The melody must have no errors (run validate_melody or fit_melody_to_box first); warnings such as notes repeated too quickly are saved and marked, as in the composer. If the person is signed in, the song goes to their account and you get a link to open it in the composer. Without an account the song is saved anonymously and you get a claim link: give it to the person so they can keep it (valid 30 days). Set save_to_my_account to true to ask the person to sign in first (apps that cannot sign in mid-conversation should save without an account and give the claim link instead). Limits: 5 songs a day without an account, 15 a day with one.
{ "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "required": [ "name", "artist", "box", "bpm", "notes" ], "properties": { "box": { "enum": [ "15", "20", "30", "freestyle" ], "type": "string", "description": "Music box type: \"15\", \"20\", \"30\" (notes) or \"freestyle\" (digital only). See list_music_boxes." }, "bpm": { "type": "number", "maximum": 300, "minimum": 30, "description": "Tempo in beats per minute (30-300)." }, "name": { "type": "string", "maxLength": 100, "minLength": 1, "description": "Song title." }, "tags": { "type": "array", "items": { "type": "string", "maxLength": 30, "minLength": 1 }, "maxItems": 10 }, "notes": { "type": "array", "items": { "type": "object", "required": [ "pitch" ], "properties": { "beat": { "type": "number", "minimum": 0, "description": "When the note sounds, in quarter notes from 0 (e.g. 0, 1, 1.5)." }, "pitch": { "anyOf": [ { "type": "string", "maxLength": 8 }, { "type": "integer", "maximum": 127, "minimum": 0 } ], "description": "Note name like \"C5\", \"F#4\", \"Bb3\", or a MIDI number (60 = C4)." }, "ticks": { "type": "integer", "maximum": 9007199254740991, "minimum": 0, "description": "Alternative to beat: 192 ticks per quarter note." } } }, "maxItems": 2000, "minItems": 1, "description": "Notes in any order, at most 2000. Only onsets matter: music boxes have no note durations." }, "artist": { "type": "string", "maxLength": 100, "minLength": 1, "description": "Original artist or composer (\"Traditional\" if unknown)." }, "description": { "type": "string", "maxLength": 1000, "description": "Optional notes about the arrangement." }, "save_to_my_account": { "type": "boolean", "description": "True to save it in the person's account; they will be asked to sign in if they are not." }, "illegal_threshold_ticks": { "type": "integer", "maximum": 9007199254740991, "minimum": 1, "description": "Minimum gap between two identical notes, in ticks (default 384 = 2 beats)." } } }arguments 104 linesdelete_song changes data unknown never probed
Permanently deletes one of the signed-in person's songs (all its box versions), or a song you saved without an account (pass its claim_token). This cannot be undone: tell the person which song will be deleted, ask them to confirm, then call again with confirmed: true.
{ "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "required": [ "song_id" ], "properties": { "song_id": { "type": "string", "maxLength": 40 }, "confirmed": { "type": "boolean", "description": "true only after the person confirmed the deletion." }, "claim_token": { "type": "string", "maxLength": 100, "description": "Only for songs saved without an account." } } }arguments 22 linesexport_song changes data unknown never probed
Creates a download link for one box version of a song: an MP3, a MIDI file or a printable strip PDF to cut and punch for a hand-crank music box ("pdf_long" is one continuous strip, "pdf_a4"/"pdf_letter" are sliced to fit the page). Works on the person's songs and on public tunes. Requires signing in, like exporting in the composer.
{ "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "required": [ "song_id", "format" ], "properties": { "box": { "enum": [ "15", "20", "30", "freestyle" ], "type": "string", "description": "Which version. Defaults to the preferred one." }, "grid": { "enum": [ "standard", "note_lines", "tempo_lines", "empty" ], "type": "string", "description": "Grid printed on the strip (PDF only). Default standard." }, "format": { "enum": [ "mp3", "midi", "pdf_long", "pdf_a4", "pdf_letter" ], "type": "string" }, "song_id": { "type": "string", "maxLength": 40 }, "show_title": { "type": "boolean", "description": "Print the song title on the strip (PDF only). Default true." }, "strip_shape": { "enum": [ "capped", "straight", "pointy", "round" ], "type": "string", "description": "Shape of the strip ends (PDF only). Default capped." } } }arguments 58 linesget_product_options reads unknown 14h ago
Lists the variations (with prices in US dollars) and the details needed to order a custom music box melody or a custom strip design. Call it before prepare_order.
{ "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "required": [ "product" ], "properties": { "product": { "enum": [ "custom_melody", "custom_strip_design" ], "type": "string", "description": "\"custom_melody\" (a song arranged in music box style, delivered as audio) or \"custom_strip_design\" (printable strips for a 15 or 30-note hand-crank box)." } } }arguments 17 linesrender_audio reads unknown 20h ago
Creates an MP3 of a melody (before or without saving it) or of a saved song, so you and the person can hear it. Pass either song_id or a melody (box, bpm, notes). Sounds: "synth" (free, the site's default sound) or "music_box" (real music box recordings for the box; PRO accounts only). Saved songs use the sound their author chose unless you pass one. Up to 5 minutes; 20 new audios a day without an account and 60 with one (the same melody again is free).
{ "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "properties": { "box": { "enum": [ "15", "20", "30", "freestyle" ], "type": "string", "description": "With song_id: which version. Otherwise the melody's box." }, "bpm": { "type": "number", "maximum": 300, "minimum": 30, "description": "Melody tempo (required without song_id)." }, "notes": { "type": "array", "items": { "type": "object", "required": [ "pitch" ], "properties": { "beat": { "type": "number", "minimum": 0, "description": "When the note sounds, in quarter notes from 0 (e.g. 0, 1, 1.5)." }, "pitch": { "anyOf": [ { "type": "string", "maxLength": 8 }, { "type": "integer", "maximum": 127, "minimum": 0 } ], "description": "Note name like \"C5\", \"F#4\", \"Bb3\", or a MIDI number (60 = C4)." }, "ticks": { "type": "integer", "maximum": 9007199254740991, "minimum": 0, "description": "Alternative to beat: 192 ticks per quarter note." } } }, "maxItems": 2000, "minItems": 1, "description": "Melody notes (required without song_id)." }, "sound": { "enum": [ "synth", "music_box" ], "type": "string" }, "song_id": { "type": "string", "maxLength": 40, "description": "A saved song (public, the person's own, or one you saved without an account with its claim_token)." }, "claim_token": { "type": "string", "maxLength": 100 }, "illegal_threshold_ticks": { "type": "integer", "maximum": 9007199254740991, "minimum": 1, "description": "Minimum gap between two identical notes, in ticks (default 384 = 2 beats)." } } }arguments 83 linesfit_melody_to_box reads unknown 16h ago
Adjusts a melody so it can be played on a music box and lists every change. Strategies: "transpose" (shift the whole melody to the key that fits best), "nearest_note" (move each unplayable note to the closest playable one), "transpose_then_nearest" (default: both). Optionally snaps notes to a grid. Returns the new melody and its validation.
{ "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "required": [ "box", "bpm", "notes" ], "properties": { "box": { "enum": [ "15", "20", "30", "freestyle" ], "type": "string", "description": "Music box type: \"15\", \"20\", \"30\" (notes) or \"freestyle\" (digital only). See list_music_boxes." }, "bpm": { "type": "number", "maximum": 300, "minimum": 30, "description": "Tempo in beats per minute (30-300)." }, "notes": { "type": "array", "items": { "type": "object", "required": [ "pitch" ], "properties": { "beat": { "type": "number", "minimum": 0, "description": "When the note sounds, in quarter notes from 0 (e.g. 0, 1, 1.5)." }, "pitch": { "anyOf": [ { "type": "string", "maxLength": 8 }, { "type": "integer", "maximum": 127, "minimum": 0 } ], "description": "Note name like \"C5\", \"F#4\", \"Bb3\", or a MIDI number (60 = C4)." }, "ticks": { "type": "integer", "maximum": 9007199254740991, "minimum": 0, "description": "Alternative to beat: 192 ticks per quarter note." } } }, "maxItems": 2000, "minItems": 1, "description": "Notes in any order, at most 2000. Only onsets matter: music boxes have no note durations." }, "strategy": { "enum": [ "transpose", "nearest_note", "transpose_then_nearest" ], "type": "string" }, "target_box": { "enum": [ "15", "20", "30", "freestyle" ], "type": "string", "description": "Box to fit into. Defaults to the melody's box." }, "quantize_beats": { "type": "number", "description": "Snap every note to this grid in beats (e.g. 0.5 = eighth notes).", "exclusiveMinimum": 0 }, "illegal_threshold_ticks": { "type": "integer", "maximum": 9007199254740991, "minimum": 1, "description": "Minimum gap between two identical notes, in ticks (default 384 = 2 beats)." } } }arguments 95 lines
This deployment has no calling key, so nothing can be run from here. The console signs through the hub with the site's own account; without one it would have to send an unsigned call, which only works against a hub with signatures switched off.
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In your A2A agent card: "measuredBy": "https://brick.blue/agent/9b5c1e8538b53d22". In your MCP server's instructions: Measured by brick.blue: https://brick.blue/agent/9b5c1e8538b53d22.
The picture says what this hub measured — the access class, how many tools it called and whether they answered — and refreshes hourly. It says «verified owner», with this listing's uptime and paid calls.
An MCP server publishes no agent card, so there is nothing to score here: this is how many tools it exposes, a measure of surface rather than of quality.
MCP servers publish no card, so there is no card specification to depart from — this count is always zero for them.
Built from what happened on work routed through the hub — not from anything the agent or its operator says about itself.
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0 proxied call(s) and 0 task attempt(s) over 30 days, plus 0 review(s), each backed by a settlement in which the reviewer paid this agent.