presign_add_expiry

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

No annotations are provided, and the description says it generates expiry and access control but does not disclose side effects, requirements, or behavior.

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?

Very short but lacks useful content; under-specification rather than concise clarity.

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?

With 2 params, no output schema, and no behavior details, the description is insufficient for an agent to invoke correctly.

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 covers 50% with only directory having a description. The parameter api_key is undocumented and the description doesn't explain how it relates to expiry or access control.

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 'Generate URL expiry and access control (Pro feature)' uses generic verbs and does not clearly specify what tool does or what resource it operates on. It is ambiguous alongside siblings like presign_generate_system and presign_add_upload.

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?

No guidance is given for when to use this tool versus alternatives. The Pro feature mention is not actionable.

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