find_tracks_by_key
Find catalog tracks in a given musical key — for harmonic mixing and key-locked playlists. key accepts Camelot ("8A"), Open Key ("1m"), or a key name ("A-Minor", "F#-Major"). Returns tracks ordered by popularity, each with full audio features. To discover which keys mix well with a given key firs...
This record as markdown: /tools/com-freqblog-music-metadata/find-tracks-by-key.md
What find_tracks_by_key does on FreqBlog Music Metadata
AI agents call find_tracks_by_key to retrieve information from FreqBlog Music Metadata without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
key | string | Yes | Camelot ('8A'), Open Key ('1m'), or key name ('A-Minor', 'F#-Major'). |
limit | integer | — | Max tracks (default 10). |
Parameters from the server's own tool schema.
Why find_tracks_by_key is rated Low
This tool queries a music metadata catalog by musical key and returns matching track information. It performs a search/filter operation on existing data without side effects, side effects, or altering any state. The parameters (key format) are constrained to musical key specifications, and the output is informational (tracks with audio features). This is a straightforward Read operation with minimal risk of misuse.
From the tool's definition Tool description states it 'Find[s] catalog tracks' and 'Returns tracks ordered by popularity' — purely retrieval operations with no modification, deletion, or execution of external commands.
Attacks that exploit this kind of access
The rule that runs find_tracks_by_key safely
PolicyLayer is an MCP gateway: it sits between your AI agents and FreqBlog Music Metadata, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For find_tracks_by_key, this is the rule to start with:
find_tracks_by_key is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect FreqBlog Music Metadata, apply this rule, and every find_tracks_by_key call is checked against it from then on.
Questions about find_tracks_by_key
Find catalog tracks in a given musical key — for harmonic mixing and key-locked playlists. key accepts Camelot ("8A"), Open Key ("1m"), or a key name ("A-Minor", "F#-Major"). Returns tracks ordered by popularity, each with full audio features. To discover which keys mix well with a given key first, use find_compatible_keys. It is categorised as a Read tool in the FreqBlog Music Metadata MCP Server, which means it retrieves data without modifying state.
find_tracks_by_key accepts 2 parameters: key, limit. Required: key. The full parameter table on this page comes from the server's own tool schema.
Register the FreqBlog Music Metadata MCP server in PolicyLayer and add a rule for find_tracks_by_key: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches FreqBlog Music Metadata. Nothing to install.
find_tracks_by_key is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the find_tracks_by_key rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for find_tracks_by_key. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
find_tracks_by_key is provided by the FreqBlog Music Metadata MCP server (https://mcp.freqblog.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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