download_system_apk_variant

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

No annotations exist, so the description must fully disclose behavior. It fails to mention side effects like network requirements, file overwriting behavior, or error conditions, leaving important traits undisclosed.

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, clear sentence with no redundancy fluff. It could be slightly more informative but is highly efficient.

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?

No annotations are provided, so the description must carry all behavioral transparency. It fails to mention key aspects like whether the file is overwritten, network requirements, permissions, or side effects. For a mutating download operation, this is a significant gap.

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?

All 4 parameters have individual descriptions in the schema, making them self-explanatory. The tool description adds no additional parameter guidance, but the schema covers the needed context (e.g., variant_id from list_system_apk_variants).

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 'Download' and the resource 'system APK variant' to a local file, which is specific and distinguishes it from siblings like 'download_generated_apk'.

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?

It implies usage by saying 'previously created', but does not explicitly state when to use this tool versus alternatives like download_generated_apk or how to first obtain a variant_id via list_system_apk_variants.

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