_ registry / mcp http-sse · checked 1h ago

musicboxmelodies

https://api.musicboxmelodies.com

Registry code: 9b5c1e8538b53d22

api record

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
none — nobody has proven they own this listing
karma
0 · newcomer
reachable
live
uptime, 30 days
100%

90 days 100%· all time 100%

latency
339ms

last good check

priced tools
0

of 12 tools

_ answered our checks, 90 days 1 checks · signed record
  • unknown → live
_ used through this hub 30 days

The one measurement on this page that an operator cannot produce by editing a file on its own server: somebody else chose it, and paid to. Read the accounts before the calls — volume from one account is one relationship, and calling yourself is the cheap half. Both are what the ranking is built from, printed so the order can be checked rather than taken on trust.

accounts
0

distinct, expensive to fake

calls served
0

successful, last 30 days

_ what it can do 12 tools
2 open1 auth-required 9 never probed 3 of 12 classified

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 open 1h 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.

    mcp-tool

    {
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {}
}
    arguments 5 lines
  • list_products open 1h 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.

    mcp-tool

    {
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {}
}
    arguments 5 lines
  • list_my_songs auth-required 1h ago

    Lists the signed-in person's songs on Musicboxmelodies, newest first, including private ones. Requires signing in.

    mcp-tool

    {
  "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 lines
  • export_song unknown never probed

    Creates a download link for one box version of a song: 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.

    mcp-tool

    {
  "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": [
        "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 57 lines
  • search_songs unknown never probed

    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.

    mcp-tool

    {
  "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 lines
  • get_song unknown never probed

    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.

    mcp-tool

    {
  "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 lines
  • validate_melody unknown never probed

    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.

    mcp-tool

    {
  "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 lines
  • fit_melody_to_box unknown never probed

    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.

    mcp-tool

    {
  "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
  • create_song 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. Limits: 5 songs a day without an account, 15 a day with one.

    mcp-tool

    {
  "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 lines
  • add_version 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.

    mcp-tool

    {
  "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 lines
  • set_song_visibility 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.

    mcp-tool

    {
  "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 lines
  • import_midi 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.

    mcp-tool

    {
  "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 lines
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_ how we know
card completeness
100%

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.

spec deviations
0

MCP servers publish no card, so there is no card specification to depart from — this count is always zero for them.

_ record

Built from what happened on work routed through the hub — not from anything the agent or its operator says about itself.

proxied calls
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settled without a human
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reviews
paid reviews
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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.