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

Annotations already declare readOnlyHint=true, destructiveHint=false, openWorldHint=true, so the safety profile is covered. The description adds useful behavior: results are ranked, the list is short, and each hit carries id, full name, email, phone (valuable since there is no output schema). It does not address what happens on zero matches or how ranking is computed, so it is solid but not rich.

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 compact sentences, front-loaded with the action and match surface, followed by the result shape and the endpoint. No filler, nothing redundant with the schema.

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?

With no output schema, the description correctly compensates by naming the returned fields and the ranked/short nature of the result, echoing the schema's 1-25 limit. Minor gaps: no zero-result behavior and the ranking rule is unspecified, but an agent has enough to call it correctly.

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%, so the baseline is 3; the description earns a bump by explaining what q actually matches against (name, email, phone, identification or record number), which the schema's 'Search text' does not convey. The limit parameter's effect is left to the schema, which documents it fully.

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 and resource (find clients), enumerates the matchable fields (name, email, phone, identification number, record number), and frames the outcome (a short ranked list to obtain a client_id). This is clearly differentiated from agendapro_list_clients (browse full listing) and agendapro_get_client (fetch by id).

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 fastest way to get a client_id' gives a concrete use case that tells the agent when to pick this over fetching or listing. It stops short of naming the sibling tools or stating exclusions, so the routing is implied rather than explicit.

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