list_continents

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

No annotations are provided, so the description carries the full burden; it is a pure read-only lookup but never states this, nor whether results are static, cached, or paginated. It discloses the shape of the payload (codes, names, counts) but no behavioral traits such as source dependency or stability of the counts.

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 compact sentences: contents first, the 'start here' routing cue second. No filler, front-loaded with the essential scope.

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?

For a zero-parameter, zero-annotation enumeration tool this covers what an agent needs to call it and interpret the result. The gap is the missing behavioral framing (read-only, static vs. live counts) that no annotation supplies.

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?

Zero parameters, so the baseline is 4. The description helpfully documents the exact output token set (AF AN AS EU NA OC SA) that downstream calls need, exceeding the empty schema without over-explaining.

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?

States a specific verb ('List') and resource ('continent codes') and enumerates exactly what's returned: codes, names, and country counts. It does not explicitly name a sibling tool to differentiate from, so it falls short of a 5.

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?

Provides a clear entry-point cue ('Start here to find a continent code') that tells the agent when this is the right first call. No explicit when-not-to-use or named alternative, so it does not reach 5.

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