get_api_limits

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description carries the behavioral burden. It clearly indicates this is an informational read about API limits and does not perform mutations. However, it does not mention output format, side effects, or whether it contacts Spotify, leaving some transparency gaps.

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?

A single concise sentence that front-loads the core purpose ('what this app can and cannot do') and adds clarifying detail in a parenthetical. No filler words or redundant information.

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 zero-parameter getter, the description is reasonably complete: it states the subject and the reason for limitations. It could specify the output shape, but the absence of parameters and output schema makes this less critical.

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?

There are zero parameters, so the description needs to add no parameter meaning. The baseline of 4 applies, and the description gives relevant context about the resource being queried.

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?

Describes the tool's scope: it states the app's capabilities and limitations, specifying that it relates to endpoints removed/renamed by Spotify for new apps. It is not a tautology and is distinct from the sibling tools, though it lacks an explicit verb/command.

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?

The description implies the tool should be consulted to understand app limitations, but it provides no when-to-use versus alternative guidance. There is no mention of contexts where this should be checked first or how it differs from related budget/search tools.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.