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

readOnlyHint=true already tells the agent this is a safe read operation, so the bar is lower, but the description adds nothing beyond that: no ranking behaviour, no result-shape or pagination context, no note on how matches are scored.

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 that names the action and the content set with no filler. It could carry one more useful clause (e.g. limit behaviour) without becoming bloated.

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-parameter, read-only search with no output schema and full schema coverage, the description covers what an agent needs to invoke it correctly. Only minor gaps remain around result ordering and limits.

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% for both parameters (query as free-text term, limit 1-20), so the schema does the heavy lifting. The description adds no extra meaning about query syntax or matching behaviour; baseline 3 applies.

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 a precise scope: the playbook, guides, tool reviews and comparisons on a named domain. That is clearly distinguishable from the RFQ/supplier-oriented siblings, though it does not explicitly name a sibling it is not.

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?

The content scope implies when to use it (looking for documentation, reviews or comparisons rather than suppliers or quotes), but there is no explicit when-to-use, when-not-to-use, or pointer to alternatives such as list_manufacturing_tools.

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