get_mediacover_by_series_id_by_filename

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

Annotations already convey read-only, idempotent, and non-destructive behavior, so the description's 'Read' adds little. It discloses the HTTP method and path structure but does not add behavioral context such as output characteristics, cache implications, or error behavior.

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 brief and front-loaded with the core purpose. The endpoint and argument layout are clean, though slightly terse; no words are wasted, but additional useful context could be included without harming 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 read operation with only two path parameters, the endpoint plus argument list is largely sufficient, especially with strong annotations and an output schema. It lacks usage context and deeper parameter semantics, but nothing essential for making the call is missing.

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 description coverage is 0%, so the description must compensate. It only labels both parameters as path parameters, which is useful for request construction, but it does not explain what series_id or filename mean semantically or how they relate to MediaCover.

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 reads MediaCover, naming a specific verb and resource. It does not explicitly differentiate itself from siblings such as get_content_by_path, but the resource name and endpoint are distinctive enough for basic identification.

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?

There is no guidance on when to use this tool versus alternatives. It simply provides the endpoint and parameters, leaving the agent to infer usage context from the tool name and annotations.

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