get_devices

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

There are no annotations to indicate safety or side effects. The description only states that it lists devices, but does not disclose whether it requires authentication, whether it changes any state, or any other behavioral aspects. This lack of transparency is a concern.

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 a single, concise sentence that directly states the function. It is well-structured and to the point.

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 absence of parameters and output schema, the description is adequate. It covers the essential aspect of what the tool does. However, it could mention any prerequisites or typical usage scenarios, but that is not critical for a simple listing operation.

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 tool has no parameters, so schema coverage is complete. There is nothing to explain, and the description does not mislead about parameters.

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 tool's function: listing all available Spotify Connect devices. It also specifies the information returned (IDs, names, types, and active status), making its purpose unambiguous.

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 does not explicitly state when to use this tool versus alternatives. However, given that it is a simple listing tool, the context implies it is for retrieving device information, but it lacks explicit guidance on when to choose it over other playback-related tools.

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