AI agents call mb_search_releases to retrieve information from UnClick without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
limit | number | — | |
query | string | Yes | |
artist | string | — |
Parameters from the server's own tool schema.
This tool performs a search operation on MusicBrainz, a public music metadata database. It retrieves information about music releases and albums without modifying, deleting, or executing any operations. The search functionality is a classic Read operation with no side effects. Severity is low because misuse would only affect data retrieval, not cause harm to systems or data integrity.
From the tool's definition Tool name 'mb_search_releases' and description 'Search for releases/albums on MusicBrainz' indicate a read-only query operation that retrieves music catalog data.
Risk signalsAccepts freeform code/query input (query)
Attacks that exploit this kind of access
Search for releases/albums on MusicBrainz. It is categorised as a Read tool in the UnClick MCP Server, which means it retrieves data without modifying state.
mb_search_releases accepts 3 parameters: limit, query, artist. Required: query. The full parameter table on this page comes from the server's own tool schema.
Register the UnClick MCP server in PolicyLayer and add a rule for mb_search_releases: 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 UnClick. Nothing to install.
mb_search_releases 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 mb_search_releases 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 mb_search_releases. 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.
mb_search_releases is provided by the UnClick MCP server (@unclick/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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