generate_batch

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

With no annotations, the description carries the full behavioral burden and does disclose real side effects: numbered PNG files are written ('Salva <prefix>_01.png, <prefix>_02.png...') and credits are recorded per character. It omits overwrite behavior, permissions, and execution cost/duration for a batch job, so the disclosure is partial.

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?

Front-loaded with the action and output artifacts, then two short labelled parameter hints. Efficient and earns its space, though the mixed inline documentation of only two of ten params makes the structure feel uneven.

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 10-parameter, zero-required, no-annotation, no-output-schema tool, the definition is materially incomplete: it explains two parameters and the file output but leaves the bulk of configuration (count, layout, export, animations, seed) opaque. An agent can attempt a call but cannot reason about most of the knobs it is offered.

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% across 10 parameters, so the description must compensate and only does so for two: body_types (with default 'male e female') and fixed_items (with a concrete JSON example). The remaining eight parameters (seed, count, split, export, layout, animations, output_dir, and prefix beyond its role in filenames) are entirely undocumented anywhere.

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?

States a specific verb and resource ('Gera vários personagens aleatórios de uma vez') with the plural/batch scope, which implicitly distinguishes it from the single-character siblings generate_character and random_character. It never names a sibling explicitly, so one must infer the boundary rather than being told it.

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 parenthetical example ('aldeões para um vilarejo') implies a bulk-NPC use case, giving weak situational guidance. There is no explicit when-to-use vs generate_character, no prerequisites, and no exclusions, so the agent must infer the selection rule.

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