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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is fully covered. The description adds useful content-shape context (what fields a solution entry includes), which is more than the annotations give, but says nothing about lookup failure behavior when a slug doesn't exist.

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 tight sentence with no filler, front-loaded with the key noun phrase. It is efficient, though the field enumeration slightly crowds out an actual statement of what the tool does.

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 and annotations cover the safety profile, so the return-value gap is minor. However, for a one-parameter lookup tool the description omits the input semantics and any routing versus explain_error, leaving the two most decision-relevant pieces unaddressed.

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 single required 'slug' parameter has 0% schema description coverage and the description never mentions it at all, so an agent gets only the regex pattern to infer meaning. The description does not compensate for the coverage gap by explaining what a slug identifies or where it comes from.

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 enumerates what a solution entry contains (meaning, causes, steps, pitfalls, sources), which implies fetching a full entry, but never states a verb+resource directly ('retrieve the full solution for one error') and gives no differentiation from the sibling explain_error or list_errors. The purpose is inferable but the framing is a content list rather than a clear action statement.

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 guidance on when to use this tool versus explain_error, list_errors, or get_access_solutions, and no mention of prerequisites or lookup behavior. The agent must infer usage entirely from the name and sibling list.

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