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

Annotations already cover the safety profile (readOnlyHint, idempotentHint, non-destructive, closed-world), so the description's added value is the return shape – 'titles, summaries and URLs' – which matters because there is no output schema. It does not mention result caps, ranking, or empty-result behavior, keeping it below a 5.

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?

Two sentences, zero filler, with the domain and topic scope front-loaded and the return values placed last where they belong. Every clause earns 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?

For a two-optional-parameter, read-only search tool with no output schema, the description supplies purpose, scope, and return shape – enough to call it correctly. The remaining gap is behavioral detail on result capping and ordering, which is minor at this 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 coverage is 50%: 'query' is documented in the schema while 'limit' has only bounds and a default. The description's topic examples ('costs, caretakers, dementia…') loosely reinforce what a valid query looks like but add nothing about how limit affects the result set, so the baseline 3 for this coverage level is appropriate.

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?

States a specific verb ('Search') and resource ('Kareverse's published guides') and enumerates the covered topic areas, which lets an agent distinguish guide search from the sibling search_services without opening either schema. It stops short of naming any alternative explicitly, so it is clear but not fully differentiated.

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: an agent can infer this is for finding editorial guide content rather than service listings, but there is no statement of when to prefer it over search_services or get_service, and no exclusions or prerequisites.

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