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

The annotations already declare readOnlyHint=true and destructiveHint=false, so the safety profile is covered. The description adds value by enumerating the ownership types returned, but it does not disclose additional behaviors like pagination, ordering, or potential freshness of the data. This is acceptable for a simple list tool but adds only modest context beyond annotations.

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?

A single sentence that delivers complete information with no waste. It is front-loaded with the verb and resource, and the ownership categories add precise detail without verbosity.

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 zero parameters and no output schema, the description fully covers what an agent needs: the resource type, the ownership categories, and the account-scoped availability. Nothing essential is missing for calling the tool 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?

The tool has zero parameters and schema coverage is 100%, so there is no semantic gap to fill. The description does not need to describe parameter details. The baseline of 4 applies because no parameters exist, and the description correctly focuses on the output scope.

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 states a specific verb ('List') and resource ('owned Tetrees AI Packs'), and further clarifies the scope by naming three ownership categories (purchased, claimed-free, seller-owned). This clearly distinguishes it from sibling tools like acquire_free_ai_pack or get_ai_pack_report.

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 the use case: call this when you need to see what packs are available to the current account. It does not explicitly name alternatives or exclusions, but the zero-parameter read-only nature makes the context clear. The sibling tools are all different actions, so no confusion arises.

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