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

With no annotations, the description carries the full behavioral burden, and it discloses only that the body is discarded. It says nothing about whether this is read-only, whether it makes network or disk calls (the schema's per-param claims contradict this), what the returned count looks like, or how errors are surfaced.

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?

Six words are front-loaded and waste nothing, but this is terseness rather than useful conciseness. The brevity comes at the cost of any explanation for a 9-parameter tool, so the sentence does not fully earn 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?

A 9-parameter, zero-required, no-annotation, no-output-schema tool is left almost entirely unexplained. An agent cannot tell from this description what the tool actually does with the nine heterogeneous inputs or when calling it is appropriate, making the definition inadequate 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?

Schema description coverage is 100%, so each of the 9 parameters is already documented in the schema and the baseline is 3. The description adds no meaning at all about parameters, and notably never explains the glaring mismatch between an HCL counter and inputs like city, feed, and zone.

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?

"HCL block count" names a resource (HCL blocks) and an implied output (a count), and "body discarded" signals the tool only inspects shape. However, the description never says what HCL is, never frames this as a validation/shape-check despite sibling names like file-path-ok and domain-shape, and gives no clue why a supposed HCL counter accepts url, city, feed, host, and zone.

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?

There is no when-to-use statement, no prerequisites, and no pointer to any alternative or related shape-check sibling. The only implicit hint is the naming convention shared with other -ok tools, which the description itself does not reinforce.

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