Index / other

HornLib — Interactive French Horn F/Bb Double Horn Fingering & Harmonics Engine

com-hornlib-mcp declares 8 capabilities across 8 tools, with 1 critical issue. One of them, no-revocation, is recorded for every server in the index because MCP has no field in which to declare a way to switch a tool off; a missing declaration is not evidence that the control is missing.

14/100 exposureLow exposure

Manifest recorded 2026-11-08 from tools/list on https://hornlib.com/api/mcp, published in the official MCP registry as com.hornlib/mcp 1.0.3. The date changes only when the manifest does. Not verified by a maintainer.

Issues

These describe what this server's manifest declares. A product can provide controls that MCP has no way to express — token revocation, an admin console, audit logs — and this page cannot see them. The absence of a declaration is not evidence that a control is absent.

critical · no-revocation · All 8 tools

8 of 8 tools declare no way for the customer to switch them off once granted. This applies to every tool because MCP has no field in which to declare a revocation mechanism; the product may provide one outside MCP that a manifest cannot show.

high · no-expiry · All 8 tools

8 of 8 tools declare no expiry. This applies to every tool because MCP has no field in which to declare an expiry; the product may provide one outside MCP that a manifest cannot show.

high · no-audit-trail · All 8 tools

8 of 8 tools declare no record of their actions that the customer can read. This applies to every tool because MCP has no field in which to declare an audit requirement; the product may provide one outside MCP that a manifest cannot show.

low · uncapped-read · All 8 tools

8 tools can read data and declare no limit.

Declared capabilities

How each tool was read. declared means the server's own annotation said so — self-reported and unverified. inferred is from the tool's name. assumed means nothing indicated either way.

Tool	Read as	Basis
`lookup_french_horn_fingering`	`read`	declared
`transpose_french_horn_pitch`	`read`	declared
`analyze_horn_harmonic_series`	`read`	declared
`lookup_horn_trill_fingering`	`read`	declared
`get_orchestral_horn_excerpt_guide`	`read`	declared
`diagnose_horn_intonation_and_hand_position`	`read`	declared
`recommend_beginner_horn_and_mouthpiece`	`read`	declared
`generate_daily_horn_warmup_routine`	`read`	declared

Answering this question about your own agent? The self-serve stack report applies the same reading to your own stack or server and gives you a dated document you can hand to a customer's security review. It is generated in your browser, with nobody to wait for. Buying one does not change this page, its score or its place in the index — see Independence.

Maintain this server? If this page misreads your manifest, or your server has changed, submit its current tools/list response and it will be re-scored and dated. Corrections are published alongside the original, not in place of it.