Retrieve Deezer music charts for a specific country using its country code (e.g., FR, US). Set the maximum number of tracks to receive only the charts you need.
Get Deezer charts by country (FR, US, etc).
| Name | Required | Description | Default |
|---|---|---|---|
| country_code | No | Country code (e.g. FR, US, DE) | |
| tracks_first | No | Max tracks (default 10) |
Changes observed during successful MCP inspections.
v1.0.0Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations exist, so the description bears full responsibility for behavioral disclosure. It does not mention read-only nature, rate limits, default values, or what happens if country_code is omitted. Minimal transparency.
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 very concise at one sentence with no unnecessary words. However, it is slightly too terse and could expand slightly without losing conciseness.
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?
For a simple tool with two parameters, the description is adequate but incomplete. It does not mention default behavior for country_code or what the charts contain (top tracks/artists). No output schema exists to compensate.
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?
Schema coverage is 100% with both parameters having descriptions. The description adds no extra meaning beyond the schema, but the baseline of 3 is appropriate since the schema already explains the parameters adequately.
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 clearly states the verb 'Get' and the resource 'Deezer charts' with country filtering. It distinguishes from sibling 'get_user_charts' by mentioning country-specific charts, but could be more specific about returning top charts.
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 on when to use this tool versus alternatives like 'get_user_charts' or other get_* tools. No when-to-use or when-not-to-use information is provided.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.