jio_backup_summary

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It mentions 'first page sample per category,' which hints at a sampling behavior, but this is ambiguous: it is unclear whether the counts and bytes represent the full totals or are derived from the sample. The description does not clarify read-only nature, authentication needs, or potential side effects, though the verb 'Summarize' suggests a safe read operation.

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, compact sentence that conveys the core purpose and key output elements (counts, bytes, categories, sample). Every word contributes to the meaning, with no redundant phrases or excessive detail. It is front-loaded with the main verb and object.

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 tool with one parameter and no output schema, the description provides a reasonable overview but leaves a critical gap: the lack of any explanation for 'sampleLimit.' An agent would not know how to configure the tool correctly. Additionally, the output structure is only partially described; while 'counts and bytes' are mentioned, the exact return format is not specified.

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 defines a single parameter 'sampleLimit' with zero description coverage. The tool description makes no mention of this parameter, leaving the AI agent without any guidance on its purpose, default value, or effect on output. Since schema coverage is 0%, the description should have compensated, but it does not.

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 begins with a specific verb 'Summarize' and clearly identifies the resource: backup counts and bytes for five distinct categories (photo/video/document/audio/other). This makes the tool's purpose immediately clear and differentiates it from sibling tools like list_files or storage_usage, which serve different functions.

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 when to use this tool: when a category-level summary of backup counts and bytes is needed. However, it does not explicitly mention alternatives or specify when not to use it. The context is clear enough for an AI agent to make a reasonable choice, but explicit exclusions or comparisons with sibling tools are absent.

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