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

With no annotations, the description carries the transparency burden. It discloses that no authentication is required, and that unreviewed pairs return an honest 'not released' rather than a percentage. It does not describe response format details, but the 200 response section hints at JSON. This is reasonable for a simple list operation.

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 concise and well-structured: a clear opening, usage context, behavior note, authentication statement, and response hint. The sentence about building pairs to order adds some extra context but is not excessive. It is front-loaded with the core purpose.

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 list tool with no output schema, the description covers purpose, usage, behavior for missing pairs, and authentication. The only gap is a precise JSON response format, but the 'Responses' section and phrase 'coverage figure for each' give enough for a simple list. It is adequate and complete for the tool's complexity.

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 baseline is 4. The description adds no parameter details (none needed) but does clarify the output includes a coverage figure per pair, which is relevant context though not about inputs.

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?

Purpose is explicit: lists framework pairs with a reviewed, signed-off coverage crosswalk and the coverage figure for each. Clearly distinguishes from sibling tools by its focus on released crosswalks and the coverage value, and it names the associated tool agent_coverage_crosswalk.

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?

Explicitly instructs to call this before agent_coverage_crosswalk to identify which pairs return a number. Also states that pairs not listed are unreviewed and will return 'not released', giving clear when-to-use and exclusion guidance.

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