create_character

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

With no annotations provided, the description carries the burden of behavioral disclosure. It only states the purpose but gives no details on side effects, idempotency, permissions, what is returned, or whether naming conflicts are handled. This is a significant gap for a mutation tool.

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, well-structured sentence. Every word contributes meaning, it is front-loaded with the core action, and there is no wasted text.

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?

The description is minimal and omits crucial context: how the created character card is used afterward, how it interacts with generation tools like generate_image, and what the tool returns. Given the tool's role in a pipeline, this is incomplete for an agent to understand its place.

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%, so the baseline is 3. The description adds no extra meaning beyond the schema; the 'consistent visual traits' phrase vaguely relates to the description parameter but does not add technical detail. No additional param context is provided.

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 creates a reusable character card with consistent visual traits across scenes, using the verb 'Create' and a specific resource. It distinguishes from sibling image generation tools by implying cross-scene reuse, but does not explicitly name an alternative.

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 implies usage when consistent characters are needed across scenes ('reusable', 'across multiple scenes'), but it does not explicitly state when to use this over generate_image or other siblings. No exclusions or alternatives are mentioned.

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