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

No annotations are provided, so the description must carry the full burden. It discloses the free-tier rate limit (20 calls/day per IP) and outlines the output fields, but does not mention error behavior, required authentication, or response format. This is adequate but not rich.

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?

Two sentences with zero waste. The first sentence states the purpose and output fields; the second gives a concrete usage constraint. Every word earns its place.

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 it has only 1 parameter, no output schema, and no annotations, the description covers the essential return fields and the free-tier limit. It does not include error handling or alternate usage, but for a simple read tool this is sufficient. Sibling tools suggest a 'search first, then get details' pattern, which is implied but not explicit.

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 already describes the 'pal' parameter as 'Pal name or id' with 100% coverage. The description adds context about what information will be returned for that pal, but does not add extra parameter-specific meaning beyond the schema.

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 uses a specific verb ('Get') and resource ('a Pal in Palworld'), and lists concrete output fields (id, name, element, breed power, work skills, food, egg type). It clearly distinguishes itself from sibling tools like find_breeding_routes or get_passive, which focus on other aspects.

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 clearly implies this is for retrieving full details of a specific Pal, not for searching or breeding routes. It does not explicitly mention when not to use it or name alternatives, but the context and sibling list make the use case apparent.

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