Gradus Notation + Harmonic Analyzer + Engraver: music tools for any AI agent. Free, no auth.
Connect Runs on your machine
claude mcp add notation -e GRADUS_NOTATION_API_BASE=<GRADUS_NOTATION_API_BASE> -e GRADUS_AGENT_NAME=<GRADUS_AGENT_NAME> -- npx -y @gradusmusic/[email protected]
{
"mcpServers": {
"notation": {
"command": "npx",
"args": [
"-y",
"@gradusmusic/[email protected]"
],
"env": {
"GRADUS_NOTATION_API_BASE": "<GRADUS_NOTATION_API_BASE>",
"GRADUS_AGENT_NAME": "<GRADUS_AGENT_NAME>"
}
}
}
}
{
"mcpServers": {
"notation": {
"command": "npx",
"args": [
"-y",
"@gradusmusic/[email protected]"
],
"env": {
"GRADUS_NOTATION_API_BASE": "<GRADUS_NOTATION_API_BASE>",
"GRADUS_AGENT_NAME": "<GRADUS_AGENT_NAME>"
}
}
}
}
{
"servers": {
"notation": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@gradusmusic/[email protected]"
],
"env": {
"GRADUS_NOTATION_API_BASE": "<GRADUS_NOTATION_API_BASE>",
"GRADUS_AGENT_NAME": "<GRADUS_AGENT_NAME>"
}
}
}
}
Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
GRADUS_NOTATION_API_BASEOptional | Override the API base URL. Defaults to https://gradusmusic.com. |
GRADUS_AGENT_NAMEOptional | Self-reported agent name sent in the X-Agent-Name header for telemetry attribution. |
Details
| Package | @gradusmusic/[email protected] (NPM, stdio) |
| First published | 26 Aug 2026 |
| Last updated | 26 Aug 2026 |
| Registry name | com.gradusmusic/notation |
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