Remove an artist from your Deezer favorites by passing the artist ID. This unfollows the artist, keeping your favorites list up to date.
Unfollow an artist.
| Name | Required | Description | Default |
|---|---|---|---|
| artist_id | Yes |
Changes observed during successful MCP inspections.
v1.0.0Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of disclosure. It only states the action without explaining any behavioral traits such as side effects, idempotency, error conditions, or return behavior, which is insufficient.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is extremely concise at three words, but it sacrifices informativeness. While not verbose, it fails to provide necessary details, making it borderline under-specified rather than effectively concise.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool has one parameter, no output schema, and no annotations, the description should compensate with more context. It only states the basic purpose, missing details on parameter usage, expected behavior, and error handling, thus incomplete.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The schema description coverage is 0%, and the description does not mention the 'artist_id' parameter or its semantics. The agent must rely on the parameter name alone, which is inadequate for correct usage.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description 'Unfollow an artist.' clearly states the action (unfollow) and resource (artist), accurately reflecting the tool name. It distinguishes from sibling tools like 'add_artist_to_favorite' and 'remove_album_from_favorite'.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
No guidance is provided on when to use this tool versus alternatives. There is no mention of prerequisites, when not to use it, or any contextual cues, leaving the agent to infer from the name alone.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.