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

Annotations already cover the safety profile with readOnlyHint=true and destructiveHint=false. The description adds context about the output scope, namely a description of Chapa and a listing of agent-facing tools/entry points, but it provides no additional behavioral details such as auth requirements, response format, or any caveats. This is a modest but useful addition over the 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?

The description is a single, tightly worded sentence that leads with the main verb and immediately conveys the purpose. There is no redundancy or filler, making it an efficient and well-structured description.

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, read-only discovery tool with safety annotations, the description adequately conveys what the call returns and why an agent would use it. It does not describe the exact structure of the returned list, but with no output schema that is not necessary, and the scope is sufficiently clear.

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 takes zero parameters, so the description has no parameter-level details to add. Per the baseline for zero-parameter tools, a score of 4 applies because the empty schema already fully documents the input contract.

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 names the resource (Chapa) and two explicit actions: describe and list agent-facing tools and entry points. This distinguishes it from sibling profile- and verification-focused tools, which operate on individual profiles rather than site-level capabilities.

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 does not explicitly state when to use this tool over siblings or mention alternatives. However, the name and phrasing imply it serves as an initial discovery/entry point for learning about Chapa's available tools and entry points, so usage is implied rather than spelled out.

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