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

Annotations already declare readOnlyHint=true, openWorldHint=false, destructiveHint=false, so the safety profile is covered. The description adds genuinely useful scope limits: only previously loaded pages are searched and post-load updates are excluded. It still doesn't mention result limits or pagination, but the added corpus constraint is real value.

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?

Front-loads purpose and scope, then the when-to-use rule, then the fallback ladder — a logical order with no filler. It is somewhat long for a one-parameter tool, keeping it out of the 5 band.

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 formatting need not be explained. The description covers scope, priority, and failure handling for a simple one-param tool. The only notable omission is guidance relative to the sibling search_pages.

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 100% for the single query parameter, so the baseline is 3. The description goes beyond the schema by advising how to formulate the query (expand abbreviations to full names, substitute synonyms), which adds real semantics about what string works best.

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 by keyword), the resource (pages loaded from logue-vintage.com), and the return shape (matching passages with excerpts and URLs). It also scopes the corpus explicitly. It falls short of 5 because it never distinguishes itself from the near-identically named sibling search_pages.

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?

Gives an explicit when-to-use rule ("if asked about logue-vintage.com, use this first") plus a recovery procedure when nothing is found (rephrase, expand abbreviations, use synonyms). It never names an alternative tool or says when not to use this one, so it stops short of 5.

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