# Gradus Notation (slim) > Gradus Notation, an MCP server by gradusmusic.com, listed from the official MCP registry. Indexed, not reviewed: facts and our own checks, no score or ranking. Gradus Notation + Harmonic Analyzer + Engraver: music tools for any AI agent. Free, no auth. - Full: https://www.anchorterminal.com/tools/gradusmusic-notation.md (~500 tokens) · this version ~430 tokens · JSON https://www.anchorterminal.com/tools/gradusmusic-notation.json · canonical https://www.anchorterminal.com/tools/gradusmusic-notation - Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-05 # Gradus Notation > Indexed, not reviewed: facts from the official MCP registry and our own checks. No score, grade or rank, and not in the rankings until the panel reviews it. How the index works: https://www.anchorterminal.com/indexed/ - Kind: MCP server, by gradusmusic.com (https://gradusmusic.com/notation-api) - Category: Music generation (https://www.anchorterminal.com/categories/music-generation.md) - Listed because: It's published in the registry under gradusmusic.com, a namespace the registry only gives to whoever proves they control that domain. - What the official MCP registry says: Gradus Notation + Harmonic Analyzer + Engraver: music tools for any AI agent. Free, no auth. ## Facts - MCP registry: `com.gradusmusic/notation` 0.8.0 - Package: npm `@gradusmusic/notation-mcp` (stdio) - Source: https://github.com/delmas41/gradusnotation - Website: https://gradusmusic.com/notation-api - npm downloads a week: 141 - GitHub stars: 2 - Registry entry updated: 2026-08-26 - JSON: https://www.anchorterminal.com/api/v1/tools/gradusmusic-notation.json - Being indexed says nothing about quality, and nobody can pay for it. Ask for a review: https://www.anchorterminal.com/builders/#claiming