bookshelf_get_customfilter

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

The readOnlyHint annotation already marks this as a safe read operation, and the description's 'Fetch' is consistent with that. The description does not add any further behavioral context such as error handling, return format, or authentication requirements, so it provides minimal extra value beyond the annotation.

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, seven-word sentence that is immediately clear and front-loaded. There is no waste or redundancy.

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 get-by-id tool with one required parameter, an output schema, and a readOnly annotation, the description is sufficient. It does not need to elaborate on return values since the output schema covers that, and the operation is straightforward.

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 has one parameter (id) with zero coverage in the description field. The description's 'by id' clarifies that the id parameter specifies which customfilter to fetch, which is helpful but not detailed. It does not explain the required nature or type, though the schema does, so the description adds modest semantic value.

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 uses a specific verb ('fetch') and identifies the resource ('customfilter') with a clear scope ('by id'). This distinguishes it from sibling tools like list_customfilter, create_customfilter, update_customfilter, and delete_customfilter.

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 word 'single' clarifies that this tool retrieves one specific customfilter, contrasting with list_customfilter which would retrieve multiple. However, it does not explicitly name the alternative tool or state when not to use it, so it falls short of a perfect score.

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