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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=true, so the safety profile is covered. The description usefully discloses the return format (Markdown body), but says nothing about the max_bytes cap or what happens when content exceeds it — a real behavioral gap for a read tool.

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?

A single front-loaded sentence with the resource, lookup key, and return type; no filler or redundancy.

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?

An output schema exists, so return-value detail is not required, and the Markdown body note is a helpful addition. However, for a tool exposing a size-limiting parameter, the absence of any truncation/limits discussion leaves an agent unable to predict large-skill behavior.

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 0% for two parameters. skill_id is self-evident, but max_bytes (default 200000) is never explained in the description — no mention of truncation, byte counting, or whether a truncated result is signaled. With no schema documentation, the description should compensate and does not.

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 states a specific verb and resource ('Read one Learnosity integration skill by id') and adds the return artifact ('its Markdown body'). The singular 'one ... by id' framing implicitly separates it from skills_list and skills_search, though those siblings are never named.

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?

Usage is only implied: reading a single skill requires an id, which suggests a prior list/search call, but the description never states when to prefer this over skills_search or skills_list, nor any prerequisites. Adequate but with clear gaps.

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