list_users_settings_plex

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

Annotations already cover readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is known. The description adds only the endpoint path (GET /users/settings/plex/), which is not a behavioral trait, and does not disclose any additional behavior such as authentication requirements, what data is returned, or how it relates to Plex connection state. It adds no meaningful behavioral context beyond annotations.

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, with 'Get Plex settings.' front-loaded and the endpoint path on a second line. There is no fluff, and the structure is readable. However, the endpoint line is somewhat redundant with the tool's name and adds little value, slightly reducing the 'every sentence earns its place' criterion.

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 is a simple 0-parameter GET with an output schema and safety annotations, the description is minimally sufficient. However, it lacks any guidance on what 'Plex settings' encompasses or how it differs from closely related tools like list_users_settings_plex_servers. An agent could be unsure whether this returns the same data as update_users_settings_plex modifies, so a bit more context would improve completeness.

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 zero parameters, so the description cannot add parameter-level meaning. Baseline for 0 params is 4, and there is no ambiguity or missing parameter documentation to penalize. The empty input schema is fully covered.

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 states a specific verb and resource: 'Get Plex settings.' This is clear and distinct from siblings like list_users_settings_plex_servers (Plex servers) and list_users_settings (general settings), though it does not explicitly mention scope like 'current user's' or differentiate from related Plex endpoints. It is clear but leaves some sibling differentiation to inference.

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 about when to use this tool versus alternatives such as list_users_settings_plex_servers, update_users_settings_plex, or list_users_settings. There are no conditions, exclusions, or references to sibling tools. The description simply states what it does, not when to choose it.

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