Get anime characters

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

Annotations already declare readOnlyHint and openWorldHint, so the description's mention of listing characters with roles and voice actors adds useful context without contradicting the annotations. It does not discuss pagination or limits, but that is acceptable given the tool's simplicity and 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 two sentences, each serving a clear purpose: stating the tool's function and providing a source for the required parameter. No redundancy or fluff.

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 simple single-parameter input, clear annotations, and an existing output schema, the description is complete and sufficient for an agent to understand the tool's purpose and usage. It covers what the tool does and how to get the ID.

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 covers 100% of parameters, so the baseline is 3. The description adds value by clarifying that 'id' is a mal_id and suggesting where to get it (from search_anime), which aids selection and correct usage.

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 verb 'list', the resource 'characters of an anime', and the identifier 'mal_id'. It includes what is returned ('roles and Japanese voice actors') and distinguishes from siblings like search_characters by specifying the source 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 description advises to obtain the mal_id from search_anime, giving clear context for when to use this tool. However, it does not explicitly mention when not to use it or compare with similar tools like get_manga_characters or search_characters.

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