API coverage matrix

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

The annotations already establish read-only and open-world semantics, and the description adds useful behavioral context by calling the matrix 'static' and clarifying that out-of-scope APIs are 'intentional'. This goes beyond the annotations without contradicting them. It does not describe update frequency or data provenance, but for a zero-parameter read-only tool this is acceptable.

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 immediately states the tool's core value: a static gap matrix of coverage versus intentional exclusions. There is no filler, repetition, or unnecessary scaffolding.

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 tool with no parameters, read-only annotations, and an output schema, this description is sufficient for an agent to understand what the tool does and when to call it. The distinction between covered and intentional out-of-scope APIs is the key semantic, and it is stated clearly. Nothing essential for selection or invocation is missing.

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, so the description carries no parameter-documentation burden. The input schema fully covers the (empty) argument list, and there is nothing more the description needs to explain about invocation arguments.

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 clearly identifies the tool's subject: a static gap matrix of console API coverage versus intentional out-of-scope items. It is distinguishable from the sibling tools, which focus on users, risks, activity, and monitoring rather than API coverage. However, it uses a noun phrase rather than an explicit verb like 'list' or 'show', so it falls just short of a perfect clarity score.

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 intended use is implied: an agent would call this when it needs to know which console APIs are covered and which are intentionally not. There is no explicit guidance about when to prefer it over alternatives, nor any mention of when not to use it. The unique subject matter makes the use case reasonably clear, but the description does not articulate it directly.

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