dashbrr_get_plex_sessions

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

Annotations declare readOnlyHint=true, so the agent knows it's a safe read. The description adds no behavioral context beyond that, such as what counts as an active session or whether it returns an empty list. It does not contradict annotations, but adds little value beyond them.

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: one short phrase for purpose and one short sentence for the parameter constraint. It is front-loaded with the main point and every word earns its place.

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?

This is a simple read-only getter with one parameter and an output schema present, so the description need not explain return values. It covers the core purpose and the critical parameter detail. However, it lacks any additional context such as expected response shape or limitations, making it minimally sufficient but not rich.

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 provides no description for instance_id (0% schema coverage). The description compensates with the type-prefix requirement and an example ('plex-main'), which gives format guidance. However, it does not explain the semantic role of the parameter beyond what the name implies.

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 'Active Plex playback sessions' clearly identifies the resource (Plex playback sessions) and implies retrieval, especially with the 'get' in the tool name. It distinguishes from siblings by specifying Plex specifically. However, it lacks an explicit verb, so it is clear but not maximally explicit.

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 provides no guidance on when to use this tool versus alternatives. It only states the instance_id type-prefix requirement, which is a parameter constraint rather than a usage scenario. There is no mention of prerequisites, exclusions, or alternative tools.

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