Search characters Star Wars

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It only states that it searches 'by name' and does not mention return format, pagination, or confirm that this is a read-only operation, leaving significant gaps for a tool with no annotation support.

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 very short and front-loaded, but it is grammatically awkward ('Search characters Star Wars') and duplicates the title. It is concise but lacks structure and fails to add meaningful detail beyond the basic purpose.

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 one-parameter, read-only search tool with a fully descriptive schema, the description is minimally sufficient. However, it does not explicitly differentiate from sibling tools or describe what the response contains, and the low complexity only partially compensates for these omissions.

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 100% for the single 'search' parameter, so the baseline is 3. The description's 'by name' merely restates the schema's intent and adds no extra detail about matching behavior, case sensitivity, or expected input format.

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 the verb 'Search' with the resource 'characters Star Wars' and specifies 'by name', which distinguishes it from the sibling tool search_characters_byId. However, the phrasing is awkward and repeats the title, and it does not explicitly mention the alternative of searching by ID.

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 phrase 'by name' implies this tool is for name-based character searches, giving some usage context. However, there is no explicit mention of when to use this tool versus search_characters_byId or the other sibling tools, nor any exclusions.

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