# MusicXML Synthesizer (pypi · synth-mcp)

Synthesizes audio from MusicXML, with voice-part selection and tempo control

- Trust score: 67/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-01

## Components

- pypi · `synth-mcp`: 67/100 (this document), [markdown](https://verifymcp.io/servers/raulkivi-synth-mcp/synth-mcp.md), [page](https://verifymcp.io/servers/raulkivi-synth-mcp/synth-mcp)

## Channel facts

- Registry: `pypi`
- Package: `synth-mcp`
- Version: `0.2.1`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-10-01.

- **Supply Chain Security**: 50/100
  - Malware scan not yet available for this package.
  - No known CVEs affecting this package version or its production dependencies.
  - Runs hatchling.build at install time, a recognised build step with no custom scripting around it.
  - 3 of 51 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 100/100
  - Source repository is publicly reachable at the declared URL.
  - Cryptographically verified build provenance (signed, bound to raulkivi/sheet-music-mcp).
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 4 days ago).
  - Publishes a security disclosure policy (SECURITY.md).
- **Schema Quality & AI Usability**: 77/100
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 216 tokens (~54/item across 4 items; 4 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 4 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 4 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

**Unverified: 1 category.** A category scored 0 because we could not verify it: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.

## Install

### How do I install the MusicXML Synthesizer MCP server?

MusicXML Synthesizer runs locally as a PyPI package, launched with uvx synth-mcp. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add raulkivi-synth-mcp -- uvx synth-mcp
```

### Cursor

```json
{
  "mcpServers": {
    "raulkivi-synth-mcp": {
      "command": "uvx",
      "args": [
        "synth-mcp"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "raulkivi-synth-mcp": {
      "command": "uvx",
      "args": [
        "synth-mcp"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add raulkivi-synth-mcp -- uvx synth-mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "raulkivi-synth-mcp": {
      "type": "local",
      "command": [
        "uvx",
        "synth-mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add raulkivi-synth-mcp --command uvx --arg synth-mcp
```

### Hermes

```yaml
mcp_servers:
  raulkivi-synth-mcp:
    command: "uvx"
    args: ["synth-mcp"]
```

### Netclaw

```json
{
  "McpServers": {
    "raulkivi-synth-mcp": {
      "Transport": "stdio",
      "Command": "uvx",
      "Arguments": [
        "synth-mcp"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add raulkivi-synth-mcp -t stdio -c uvx -a synth-mcp
```

### Other

```json
{
  "mcpServers": {
    "raulkivi-synth-mcp": {
      "command": "uvx",
      "args": [
        "synth-mcp"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-09-29 (score 67, −15)

- [security regression] Malware scan: pass → unverified

### 2026-09-28 (score 82, +26)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-09-27 (score 56, −15)

- [security regression] Malware scan: pass → unverified

### 2026-09-26 (score 71)

First indexed and scored.

## MCP tools (4)

### `get_parts` (~33 tokens)

List all voice parts available in a MusicXML score

Input parameters:

- `musicxml` (string, required): MusicXML document as a string

### `synthesize` (~124 tokens)

Synthesize audio from a MusicXML score. Optionally select specific voice parts and adjust the tempo.

Input parameters:

- `musicxml` (string, required): MusicXML document as a string
- `output_path` (string): Path to write WAV file (auto-generated if omitted)
- `part_ids` (array): Part IDs to include (default: all parts)
- `tempo_factor` (number): Tempo multiplier: 1.0 = score tempo, 0.75 = 75% speed. Valid range: 0.25–4.0. Default: 1.0

### `list_capabilities` (~20 tokens)

List supported formats and available tools for this synthesis server

### `health_check` (~39 tokens)

Check whether all runtime dependencies are available and correctly configured. Returns a human-readable status summary. Call this first to verify the server is ready before attempting synthesis.

## Diagnostics

Captured diagnostic sections: Provenance, Install scripts, Dependencies. The full working is on the page: https://verifymcp.io/servers/raulkivi-synth-mcp/synth-mcp#diagnostics

## Score history

- 2026-10-01: 67
- 2026-09-30: 67
- 2026-09-29: 67
- 2026-09-28: 82
- 2026-09-27: 56
- 2026-09-26: 71

## Common questions

### What is the MusicXML Synthesizer MCP server?

MusicXML Synthesizer is an MCP server listed in the public MCP registry as io.github.raulkivi/synth-mcp. Synthesizes audio from MusicXML, with voice-part selection and tempo control. This page covers its PyPI package (synth-mcp).

### Is the MusicXML Synthesizer MCP server safe to use?

MusicXML Synthesizer scores 67 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 1 October 2026. Its build provenance is signed and verified. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the MusicXML Synthesizer MCP server expose?

MusicXML Synthesizer exposes 4 tools: get_parts, synthesize, list_capabilities, health_check. Their descriptions and schemas cost roughly 216 tokens of context every time the server is loaded.

### Is the MusicXML Synthesizer MCP server still maintained?

MusicXML Synthesizer is still listed as active in the MCP registry. We last reached this channel on 1 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What licence is the MusicXML Synthesizer MCP server under?

MusicXML Synthesizer declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

## Links

- PyPI project: https://pypi.org/project/synth-mcp/
- Socket report: https://socket.dev/pypi/package/synth-mcp
- Repository: https://github.com/raulkivi/sheet-music-mcp
- Changelog RSS feed: https://verifymcp.io/servers/raulkivi-synth-mcp/synth-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/raulkivi-synth-mcp/synth-mcp.json
- HTML version of this page: https://verifymcp.io/servers/raulkivi-synth-mcp/synth-mcp