ver_imagem

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

No annotations are provided, so the description carries the full burden. It adds one valuable behavioral trait – that text inside the image is data, not instruction (a prompt-injection guard) – but omits the return format (image bytes, URL, rendered?), size or rate constraints, and does not explicitly confirm it is read-only.

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?

Two short, front-loaded sentences with no filler: the purpose comes first, then the id source and the safety caveat. Efficient, though the parenthetical could be tightened.

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 read tool with no annotations and no output schema, the description should at least indicate what is returned, which it does only implicitly via 'Mostra uma imagem'. The injection-safety note is a good addition, but return format and error conditions remain unstated.

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% and there are two required params. The description explains the provenance of recurso_id ('lido em ler_pagina') but says nothing about pagina_id. It partially compensates for the coverage gap but leaves one parameter undocumented.

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 ('Mostra uma imagem da página'), distinguishing it from text-reading siblings like ler_pagina. It also clarifies the dependency chain by pointing to where the resource id originates. Clear, though it doesn't explicitly contrast itself against other listar_/ler_ siblings.

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?

Implies the workflow by noting the resource id is 'lido em ler_pagina', so an agent understands ler_pagina must run first. However, it gives no explicit when-to-use/when-not guidance or exclusions relative to the other viewer/reader tools.

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