horizon_torn_getMyRefills

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

With no annotations, the description carries the full burden of behavioral disclosure. It does not state that the tool is read-only, requires an API key, or what 'refills' entails (e.g., energy, ammo, etc.). No side effects or auth needs mentioned.

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 only four words, which is under-specified. While brief, it fails to provide necessary context for tool selection and usage. Conciseness should not come at the expense of 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?

Given the number of sibling tools (dozens of 'getMy*' tools), the description is insufficient. It does not explain what data is returned, the format, or how 'refills' relates to other user resources. No output schema to compensate.

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 coverage is 100%, and all three parameters (key, comment, timestamp) are described in the schema. The description adds no additional meaning beyond what the schema provides, so baseline score of 3 applies.

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 'Get your refills information', which gives a verb and resource. However, 'refills' is ambiguous among sibling tools like getMyBars (energy) and getMyCooldowns. It does not clearly differentiate from similar 'getMy*' tools, making the purpose vague.

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 on when to use this tool versus alternatives like getMyBars or getMyCooldowns. The description lacks any context on prerequisites, use cases, or exclusions, leaving the agent to guess.

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